From: Daniel Jordan <daniel.m.jordan@oracle.com> To: Hugh Dickins <hughd@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com>, Andrew Morton <akpm@linux-foundation.org>, mgorman@techsingularity.net, tj@kernel.org, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com, kirill@shutemov.name, alexander.duyck@gmail.com, rong.a.chen@intel.com, mhocko@suse.com, vdavydov.dev@gmail.com, shy828301@gmail.com, vbabka@suse.cz, minchan@kernel.org, cai@lca.pw Subject: Re: [PATCH v18 00/32] per memcg lru_lock: reviews Date: Tue, 15 Sep 2020 12:58:07 -0400 [thread overview] Message-ID: <20200915165807.kpp7uhiw7l3loofu@ca-dmjordan1.us.oracle.com> (raw) In-Reply-To: <alpine.LSU.2.11.2009150112130.1550@eggly.anvils> [-- Attachment #1: Type: text/plain, Size: 8263 bytes --] On Tue, Sep 15, 2020 at 01:21:56AM -0700, Hugh Dickins wrote: > On Sun, 13 Sep 2020, Alex Shi wrote: > > Uh, I updated the testing with some new results here: > > https://lkml.org/lkml/2020/8/26/212 > > Right, I missed that, that's better, thanks. Any other test results? Alex, you were doing some will-it-scale runs earlier. Are you planning to do more of those? Otherwise I can add them in. This is what I have so far. sysbench oltp read-only ----------------------- The goal was to run a real world benchmark, at least more so than something like vm-scalability, with the memory controller enabled but unused to check for regressions. I chose sysbench because it was relatively straightforward to run, but I'm open to ideas for other high level benchmarks that might be more sensitive to this series. CoeffVar shows the test was pretty noisy overall. It's nice to see there's no significant difference between the kernels for low thread counts (1-12), but I'm not sure what to make of the 18 and 20 thread cases. At 20 threads, the CPUs of the node that the test was confined to were saturated and the variance is especially high. I'm tempted to write the 18 and 20 thread cases off as noise. - 2-socket * 10-core * 2-hyperthread broadwell server - test bound to node 1 to lower variance - 251G memory, divided evenly between the nodes (memory size of test shrunk to accommodate confining to one node) - 12 iterations per thread count per kernel - THP enabled export OLTP_CACHESIZE=$(($MEMTOTAL_BYTES/4)) export OLTP_SHAREDBUFFERS=$((MEMTOTAL_BYTES/8)) export OLTP_PAGESIZES="default" export SYSBENCH_DRIVER=postgres export SYSBENCH_MAX_TRANSACTIONS=auto export SYSBENCH_READONLY=yes export SYSBENCH_MAX_THREADS=$((NUMCPUS / 2)) export SYSBENCH_ITERATIONS=12 export SYSBENCH_WORKLOAD_SIZE=$((MEMTOTAL_BYTES*3/8)) export SYSBENCH_CACHE_COLD=no export DATABASE_INIT_ONCE=yes export MMTESTS_NUMA_POLICY=fullbind_single_instance_node numactl --cpunodebind=1 --membind=1 <mmtests_cmdline> sysbench Transactions per second 5.9-rc2 5.9-rc2-lru-v18 Min 1 593.23 ( 0.00%) 583.37 ( -1.66%) Min 4 1897.34 ( 0.00%) 1871.77 ( -1.35%) Min 7 2471.14 ( 0.00%) 2449.77 ( -0.86%) Min 12 2680.00 ( 0.00%) 2853.25 ( 6.46%) Min 18 2183.82 ( 0.00%) 1191.43 ( -45.44%) Min 20 924.96 ( 0.00%) 526.66 ( -43.06%) Hmean 1 912.08 ( 0.00%) 904.24 ( -0.86%) Hmean 4 2057.11 ( 0.00%) 2044.69 ( -0.60%) Hmean 7 2817.59 ( 0.00%) 2812.80 ( -0.17%) Hmean 12 3201.05 ( 0.00%) 3171.09 ( -0.94%) Hmean 18 2529.10 ( 0.00%) 2009.99 * -20.53%* Hmean 20 1742.29 ( 0.00%) 1127.77 * -35.27%* Stddev 1 219.21 ( 0.00%) 220.92 ( -0.78%) Stddev 4 94.94 ( 0.00%) 84.34 ( 11.17%) Stddev 7 189.42 ( 0.00%) 167.58 ( 11.53%) Stddev 12 372.13 ( 0.00%) 199.40 ( 46.42%) Stddev 18 248.42 ( 0.00%) 574.66 (-131.32%) Stddev 20 757.69 ( 0.00%) 666.87 ( 11.99%) CoeffVar 1 22.54 ( 0.00%) 22.86 ( -1.42%) CoeffVar 4 4.61 ( 0.00%) 4.12 ( 10.60%) CoeffVar 7 6.69 ( 0.00%) 5.94 ( 11.30%) CoeffVar 12 11.49 ( 0.00%) 6.27 ( 45.46%) CoeffVar 18 9.74 ( 0.00%) 26.22 (-169.23%) CoeffVar 20 36.32 ( 0.00%) 47.18 ( -29.89%) Max 1 1117.45 ( 0.00%) 1107.33 ( -0.91%) Max 4 2184.92 ( 0.00%) 2136.65 ( -2.21%) Max 7 3086.81 ( 0.00%) 3049.52 ( -1.21%) Max 12 4020.07 ( 0.00%) 3580.95 ( -10.92%) Max 18 3032.30 ( 0.00%) 2810.85 ( -7.30%) Max 20 2891.27 ( 0.00%) 2675.80 ( -7.45%) BHmean-50 1 1098.77 ( 0.00%) 1093.58 ( -0.47%) BHmean-50 4 2139.76 ( 0.00%) 2107.13 ( -1.52%) BHmean-50 7 2972.18 ( 0.00%) 2953.94 ( -0.61%) BHmean-50 12 3494.73 ( 0.00%) 3311.33 ( -5.25%) BHmean-50 18 2729.70 ( 0.00%) 2606.32 ( -4.52%) BHmean-50 20 2668.72 ( 0.00%) 1779.87 ( -33.31%) BHmean-95 1 958.94 ( 0.00%) 951.84 ( -0.74%) BHmean-95 4 2072.98 ( 0.00%) 2062.01 ( -0.53%) BHmean-95 7 2853.96 ( 0.00%) 2851.21 ( -0.10%) BHmean-95 12 3258.65 ( 0.00%) 3203.53 ( -1.69%) BHmean-95 18 2565.99 ( 0.00%) 2143.90 ( -16.45%) BHmean-95 20 1894.47 ( 0.00%) 1258.34 ( -33.58%) BHmean-99 1 958.94 ( 0.00%) 951.84 ( -0.74%) BHmean-99 4 2072.98 ( 0.00%) 2062.01 ( -0.53%) BHmean-99 7 2853.96 ( 0.00%) 2851.21 ( -0.10%) BHmean-99 12 3258.65 ( 0.00%) 3203.53 ( -1.69%) BHmean-99 18 2565.99 ( 0.00%) 2143.90 ( -16.45%) BHmean-99 20 1894.47 ( 0.00%) 1258.34 ( -33.58%) sysbench Time 5.9-rc2 5.9-rc2-lru Min 1 8.96 ( 0.00%) 9.04 ( -0.89%) Min 4 4.63 ( 0.00%) 4.74 ( -2.38%) Min 7 3.34 ( 0.00%) 3.38 ( -1.20%) Min 12 2.65 ( 0.00%) 2.95 ( -11.32%) Min 18 3.54 ( 0.00%) 3.80 ( -7.34%) Min 20 3.74 ( 0.00%) 4.02 ( -7.49%) Amean 1 11.00 ( 0.00%) 11.11 ( -0.98%) Amean 4 4.92 ( 0.00%) 4.95 ( -0.59%) Amean 7 3.65 ( 0.00%) 3.65 ( -0.16%) Amean 12 3.29 ( 0.00%) 3.32 ( -0.89%) Amean 18 4.20 ( 0.00%) 5.22 * -24.39%* Amean 20 6.02 ( 0.00%) 9.14 * -51.98%* Stddev 1 3.33 ( 0.00%) 3.45 ( -3.40%) Stddev 4 0.23 ( 0.00%) 0.21 ( 7.89%) Stddev 7 0.25 ( 0.00%) 0.22 ( 9.87%) Stddev 12 0.35 ( 0.00%) 0.19 ( 45.09%) Stddev 18 0.38 ( 0.00%) 1.75 (-354.74%) Stddev 20 2.93 ( 0.00%) 4.73 ( -61.72%) CoeffVar 1 30.30 ( 0.00%) 31.02 ( -2.40%) CoeffVar 4 4.63 ( 0.00%) 4.24 ( 8.43%) CoeffVar 7 6.77 ( 0.00%) 6.10 ( 10.02%) CoeffVar 12 10.74 ( 0.00%) 5.85 ( 45.57%) CoeffVar 18 9.15 ( 0.00%) 33.45 (-265.58%) CoeffVar 20 48.64 ( 0.00%) 51.75 ( -6.41%) Max 1 17.01 ( 0.00%) 17.36 ( -2.06%) Max 4 5.33 ( 0.00%) 5.40 ( -1.31%) Max 7 4.14 ( 0.00%) 4.18 ( -0.97%) Max 12 3.89 ( 0.00%) 3.67 ( 5.66%) Max 18 4.82 ( 0.00%) 8.64 ( -79.25%) Max 20 11.09 ( 0.00%) 19.26 ( -73.67%) BAmean-50 1 9.12 ( 0.00%) 9.16 ( -0.49%) BAmean-50 4 4.73 ( 0.00%) 4.80 ( -1.55%) BAmean-50 7 3.46 ( 0.00%) 3.48 ( -0.58%) BAmean-50 12 3.02 ( 0.00%) 3.18 ( -5.24%) BAmean-50 18 3.90 ( 0.00%) 4.08 ( -4.52%) BAmean-50 20 4.02 ( 0.00%) 5.90 ( -46.56%) BAmean-95 1 10.45 ( 0.00%) 10.54 ( -0.82%) BAmean-95 4 4.88 ( 0.00%) 4.91 ( -0.52%) BAmean-95 7 3.60 ( 0.00%) 3.60 ( -0.08%) BAmean-95 12 3.23 ( 0.00%) 3.28 ( -1.60%) BAmean-95 18 4.14 ( 0.00%) 4.91 ( -18.58%) BAmean-95 20 5.56 ( 0.00%) 8.22 ( -48.04%) BAmean-99 1 10.45 ( 0.00%) 10.54 ( -0.82%) BAmean-99 4 4.88 ( 0.00%) 4.91 ( -0.52%) BAmean-99 7 3.60 ( 0.00%) 3.60 ( -0.08%) BAmean-99 12 3.23 ( 0.00%) 3.28 ( -1.60%) BAmean-99 18 4.14 ( 0.00%) 4.91 ( -18.58%) BAmean-99 20 5.56 ( 0.00%) 8.22 ( -48.04%) docker-ized readtwice microbenchmark ------------------------------------ This is Alex's modified readtwice case. Needed a few fixes, and I made it into a script. Updated version attached. Same machine, three runs per kernel, 40 containers per test. This is average MB/s over all containers. 5.9-rc2 5.9-rc2-lru ----------- ----------- 220.5 (3.3) 356.9 (0.5) That's a 62% improvement. [-- Attachment #2: Dockerfile --] [-- Type: text/plain, Size: 509 bytes --] FROM centos:8 MAINTAINER Alexs #WORKDIR /vm-scalability #RUN yum update -y && yum groupinstall "Development Tools" -y && yum clean all && \ #examples https://www.linuxtechi.com/build-docker-container-images-with-dockerfile/ RUN yum install git xfsprogs patch make gcc -y && yum clean all && \ git clone https://git.kernel.org/pub/scm/linux/kernel/git/wfg/vm-scalability.git/ && \ cd vm-scalability && make usemem COPY readtwice.patch /vm-scalability/ RUN cd vm-scalability && patch -p1 < readtwice.patch [-- Attachment #3: run.sh --] [-- Type: text/plain, Size: 1858 bytes --] #!/usr/bin/env bash # # Originally by Alex Shi <alex.shi@linux.alibaba.com> # Changes from Daniel Jordan <daniel.m.jordan@oracle.com> SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" TAG='lrulock' runtime=300 nr_cont=$(nproc) cd "$SCRIPT_DIR" echo -e "starting $nr_cont containers\n" pids=() sudo docker build -t "$TAG" . nr_running_cont=$(sudo docker ps | sed '1 d' | wc -l) if (( nr_running_cont != 0 )); then echo "error: $nr_running_cont containers already running" exit 1 fi # start some testing containers for ((i=0; i < nr_cont; i++)); do sudo docker run --privileged=true --rm "$TAG" bash -c "sleep infinity" & done nr_running_cont=$(sudo docker ps | sed '1 d' | wc -l) until (( nr_running_cont == nr_cont )); do sleep .5 nr_running_cont=$(sudo docker ps | sed '1 d' | wc -l) done # do testing evn setup for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker exec --privileged=true -t $i \ bash -c "cd /vm-scalability/; bash ./case-lru-file-readtwice m" & pids+=($!) done wait "${pids[@]}" pids=() # kick testing for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker exec --privileged=true -t -e runtime=$runtime $i \ bash -c "cd /vm-scalability/; bash ./case-lru-file-readtwice r" & pids+=($!) done wait "${pids[@]}" pids=() # save results ts=$(date +%y-%m-%d_%H:%M:%S) f="$ts/summary.txt" mkdir "$ts" echo "$ts" >> "$f" uname -r >> "$f" for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker exec $i bash -c 'cat /tmp/vm-scalability-tmp/dd-output-*' &> "$ts/$i.out" & pids+=($!) done wait "${pids[@]}" pids=() grep 'copied' "$ts"/*.out | \ awk 'BEGIN {a=0;} { a+=$10 } END {print NR, a/(NR)}' | \ tee -a "$f" for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker stop $i &>/dev/null & done wait echo 'test finished' echo [-- Attachment #4: readtwice.patch --] [-- Type: text/plain, Size: 1876 bytes --] diff --git a/case-lru-file-readtwice b/case-lru-file-readtwice index 85533b248634..57cb97d121ae 100755 --- a/case-lru-file-readtwice +++ b/case-lru-file-readtwice @@ -15,23 +15,30 @@ . ./hw_vars -for i in `seq 1 $nr_task` -do - create_sparse_file $SPARSE_FILE-$i $((ROTATE_BYTES / nr_task)) - timeout --foreground -s INT ${runtime:-600} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-1-$i 2>&1 & - timeout --foreground -s INT ${runtime:-600} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-2-$i 2>&1 & -done +OUT_DIR=$(hostname)-${nr_task}c-$(((mem + (1<<29))>>30))g +TEST_CASES=${@:-$(echo case-*)} + +echo $((1<<30)) > /proc/sys/vm/max_map_count +echo $((1<<20)) > /proc/sys/kernel/threads-max +echo 1 > /proc/sys/vm/overcommit_memory +#echo 3 > /proc/sys/vm/drop_caches + + +i=1 + +if [ "$1" == "m" ];then + mount_tmpfs + create_sparse_root + create_sparse_file $SPARSE_FILE-$i $((ROTATE_BYTES)) + exit +fi + + +if [ "$1" == "r" ];then + (timeout --foreground -s INT ${runtime:-300} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-1-$i 2>&1)& + (timeout --foreground -s INT ${runtime:-300} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-2-$i 2>&1)& +fi wait sleep 1 -for file in $TMPFS_MNT/dd-output-* -do - [ -s "$file" ] || { - echo "dd output file empty: $file" >&2 - } - cat $file - rm $file -done - -rm `seq -f $SPARSE_FILE-%g 1 $nr_task` diff --git a/hw_vars b/hw_vars index 8731cefb9f57..ceeaa9f17c0b 100755 --- a/hw_vars +++ b/hw_vars @@ -1,4 +1,4 @@ -#!/bin/sh +#!/bin/sh -e if [ -n "$runtime" ]; then USEMEM="$CMD ./usemem --runtime $runtime" @@ -43,7 +43,7 @@ create_loop_devices() modprobe loop 2>/dev/null [ -e "/dev/loop0" ] || modprobe loop 2>/dev/null - for i in $(seq 0 8) + for i in $(seq 0 104) do [ -e "/dev/loop$i" ] && continue mknod /dev/loop$i b 7 $i
WARNING: multiple messages have this Message-ID (diff)
From: Daniel Jordan <daniel.m.jordan-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> To: Hugh Dickins <hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> Cc: Alex Shi <alex.shi-KPsoFbNs7GizrGE5bRqYAgC/G2K4zDHf@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, mgorman-3eNAlZScCAx27rWaFMvyedHuzzzSOjJt@public.gmane.org, tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, khlebnikov-XoJtRXgx1JseBXzfvpsJ4g@public.gmane.org, daniel.m.jordan-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org, lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, iamjoonsoo.kim-Hm3cg6mZ9cc@public.gmane.org, richard.weiyang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, kirill-oKw7cIdHH8eLwutG50LtGA@public.gmane.org, alexander.duyck-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, rong.a.chen-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, mhocko-IBi9RG/b67k@public.gmane.org, vdavydov.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, shy828301-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, vbabka-AlSwsSmVLrQ@public.gmane.org, minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, cai-J5quhbR+WMc@public.gmane.org Subject: Re: [PATCH v18 00/32] per memcg lru_lock: reviews Date: Tue, 15 Sep 2020 12:58:07 -0400 [thread overview] Message-ID: <20200915165807.kpp7uhiw7l3loofu@ca-dmjordan1.us.oracle.com> (raw) In-Reply-To: <alpine.LSU.2.11.2009150112130.1550-fupSdm12i1nKWymIFiNcPA@public.gmane.org> [-- Attachment #1: Type: text/plain, Size: 8263 bytes --] On Tue, Sep 15, 2020 at 01:21:56AM -0700, Hugh Dickins wrote: > On Sun, 13 Sep 2020, Alex Shi wrote: > > Uh, I updated the testing with some new results here: > > https://lkml.org/lkml/2020/8/26/212 > > Right, I missed that, that's better, thanks. Any other test results? Alex, you were doing some will-it-scale runs earlier. Are you planning to do more of those? Otherwise I can add them in. This is what I have so far. sysbench oltp read-only ----------------------- The goal was to run a real world benchmark, at least more so than something like vm-scalability, with the memory controller enabled but unused to check for regressions. I chose sysbench because it was relatively straightforward to run, but I'm open to ideas for other high level benchmarks that might be more sensitive to this series. CoeffVar shows the test was pretty noisy overall. It's nice to see there's no significant difference between the kernels for low thread counts (1-12), but I'm not sure what to make of the 18 and 20 thread cases. At 20 threads, the CPUs of the node that the test was confined to were saturated and the variance is especially high. I'm tempted to write the 18 and 20 thread cases off as noise. - 2-socket * 10-core * 2-hyperthread broadwell server - test bound to node 1 to lower variance - 251G memory, divided evenly between the nodes (memory size of test shrunk to accommodate confining to one node) - 12 iterations per thread count per kernel - THP enabled export OLTP_CACHESIZE=$(($MEMTOTAL_BYTES/4)) export OLTP_SHAREDBUFFERS=$((MEMTOTAL_BYTES/8)) export OLTP_PAGESIZES="default" export SYSBENCH_DRIVER=postgres export SYSBENCH_MAX_TRANSACTIONS=auto export SYSBENCH_READONLY=yes export SYSBENCH_MAX_THREADS=$((NUMCPUS / 2)) export SYSBENCH_ITERATIONS=12 export SYSBENCH_WORKLOAD_SIZE=$((MEMTOTAL_BYTES*3/8)) export SYSBENCH_CACHE_COLD=no export DATABASE_INIT_ONCE=yes export MMTESTS_NUMA_POLICY=fullbind_single_instance_node numactl --cpunodebind=1 --membind=1 <mmtests_cmdline> sysbench Transactions per second 5.9-rc2 5.9-rc2-lru-v18 Min 1 593.23 ( 0.00%) 583.37 ( -1.66%) Min 4 1897.34 ( 0.00%) 1871.77 ( -1.35%) Min 7 2471.14 ( 0.00%) 2449.77 ( -0.86%) Min 12 2680.00 ( 0.00%) 2853.25 ( 6.46%) Min 18 2183.82 ( 0.00%) 1191.43 ( -45.44%) Min 20 924.96 ( 0.00%) 526.66 ( -43.06%) Hmean 1 912.08 ( 0.00%) 904.24 ( -0.86%) Hmean 4 2057.11 ( 0.00%) 2044.69 ( -0.60%) Hmean 7 2817.59 ( 0.00%) 2812.80 ( -0.17%) Hmean 12 3201.05 ( 0.00%) 3171.09 ( -0.94%) Hmean 18 2529.10 ( 0.00%) 2009.99 * -20.53%* Hmean 20 1742.29 ( 0.00%) 1127.77 * -35.27%* Stddev 1 219.21 ( 0.00%) 220.92 ( -0.78%) Stddev 4 94.94 ( 0.00%) 84.34 ( 11.17%) Stddev 7 189.42 ( 0.00%) 167.58 ( 11.53%) Stddev 12 372.13 ( 0.00%) 199.40 ( 46.42%) Stddev 18 248.42 ( 0.00%) 574.66 (-131.32%) Stddev 20 757.69 ( 0.00%) 666.87 ( 11.99%) CoeffVar 1 22.54 ( 0.00%) 22.86 ( -1.42%) CoeffVar 4 4.61 ( 0.00%) 4.12 ( 10.60%) CoeffVar 7 6.69 ( 0.00%) 5.94 ( 11.30%) CoeffVar 12 11.49 ( 0.00%) 6.27 ( 45.46%) CoeffVar 18 9.74 ( 0.00%) 26.22 (-169.23%) CoeffVar 20 36.32 ( 0.00%) 47.18 ( -29.89%) Max 1 1117.45 ( 0.00%) 1107.33 ( -0.91%) Max 4 2184.92 ( 0.00%) 2136.65 ( -2.21%) Max 7 3086.81 ( 0.00%) 3049.52 ( -1.21%) Max 12 4020.07 ( 0.00%) 3580.95 ( -10.92%) Max 18 3032.30 ( 0.00%) 2810.85 ( -7.30%) Max 20 2891.27 ( 0.00%) 2675.80 ( -7.45%) BHmean-50 1 1098.77 ( 0.00%) 1093.58 ( -0.47%) BHmean-50 4 2139.76 ( 0.00%) 2107.13 ( -1.52%) BHmean-50 7 2972.18 ( 0.00%) 2953.94 ( -0.61%) BHmean-50 12 3494.73 ( 0.00%) 3311.33 ( -5.25%) BHmean-50 18 2729.70 ( 0.00%) 2606.32 ( -4.52%) BHmean-50 20 2668.72 ( 0.00%) 1779.87 ( -33.31%) BHmean-95 1 958.94 ( 0.00%) 951.84 ( -0.74%) BHmean-95 4 2072.98 ( 0.00%) 2062.01 ( -0.53%) BHmean-95 7 2853.96 ( 0.00%) 2851.21 ( -0.10%) BHmean-95 12 3258.65 ( 0.00%) 3203.53 ( -1.69%) BHmean-95 18 2565.99 ( 0.00%) 2143.90 ( -16.45%) BHmean-95 20 1894.47 ( 0.00%) 1258.34 ( -33.58%) BHmean-99 1 958.94 ( 0.00%) 951.84 ( -0.74%) BHmean-99 4 2072.98 ( 0.00%) 2062.01 ( -0.53%) BHmean-99 7 2853.96 ( 0.00%) 2851.21 ( -0.10%) BHmean-99 12 3258.65 ( 0.00%) 3203.53 ( -1.69%) BHmean-99 18 2565.99 ( 0.00%) 2143.90 ( -16.45%) BHmean-99 20 1894.47 ( 0.00%) 1258.34 ( -33.58%) sysbench Time 5.9-rc2 5.9-rc2-lru Min 1 8.96 ( 0.00%) 9.04 ( -0.89%) Min 4 4.63 ( 0.00%) 4.74 ( -2.38%) Min 7 3.34 ( 0.00%) 3.38 ( -1.20%) Min 12 2.65 ( 0.00%) 2.95 ( -11.32%) Min 18 3.54 ( 0.00%) 3.80 ( -7.34%) Min 20 3.74 ( 0.00%) 4.02 ( -7.49%) Amean 1 11.00 ( 0.00%) 11.11 ( -0.98%) Amean 4 4.92 ( 0.00%) 4.95 ( -0.59%) Amean 7 3.65 ( 0.00%) 3.65 ( -0.16%) Amean 12 3.29 ( 0.00%) 3.32 ( -0.89%) Amean 18 4.20 ( 0.00%) 5.22 * -24.39%* Amean 20 6.02 ( 0.00%) 9.14 * -51.98%* Stddev 1 3.33 ( 0.00%) 3.45 ( -3.40%) Stddev 4 0.23 ( 0.00%) 0.21 ( 7.89%) Stddev 7 0.25 ( 0.00%) 0.22 ( 9.87%) Stddev 12 0.35 ( 0.00%) 0.19 ( 45.09%) Stddev 18 0.38 ( 0.00%) 1.75 (-354.74%) Stddev 20 2.93 ( 0.00%) 4.73 ( -61.72%) CoeffVar 1 30.30 ( 0.00%) 31.02 ( -2.40%) CoeffVar 4 4.63 ( 0.00%) 4.24 ( 8.43%) CoeffVar 7 6.77 ( 0.00%) 6.10 ( 10.02%) CoeffVar 12 10.74 ( 0.00%) 5.85 ( 45.57%) CoeffVar 18 9.15 ( 0.00%) 33.45 (-265.58%) CoeffVar 20 48.64 ( 0.00%) 51.75 ( -6.41%) Max 1 17.01 ( 0.00%) 17.36 ( -2.06%) Max 4 5.33 ( 0.00%) 5.40 ( -1.31%) Max 7 4.14 ( 0.00%) 4.18 ( -0.97%) Max 12 3.89 ( 0.00%) 3.67 ( 5.66%) Max 18 4.82 ( 0.00%) 8.64 ( -79.25%) Max 20 11.09 ( 0.00%) 19.26 ( -73.67%) BAmean-50 1 9.12 ( 0.00%) 9.16 ( -0.49%) BAmean-50 4 4.73 ( 0.00%) 4.80 ( -1.55%) BAmean-50 7 3.46 ( 0.00%) 3.48 ( -0.58%) BAmean-50 12 3.02 ( 0.00%) 3.18 ( -5.24%) BAmean-50 18 3.90 ( 0.00%) 4.08 ( -4.52%) BAmean-50 20 4.02 ( 0.00%) 5.90 ( -46.56%) BAmean-95 1 10.45 ( 0.00%) 10.54 ( -0.82%) BAmean-95 4 4.88 ( 0.00%) 4.91 ( -0.52%) BAmean-95 7 3.60 ( 0.00%) 3.60 ( -0.08%) BAmean-95 12 3.23 ( 0.00%) 3.28 ( -1.60%) BAmean-95 18 4.14 ( 0.00%) 4.91 ( -18.58%) BAmean-95 20 5.56 ( 0.00%) 8.22 ( -48.04%) BAmean-99 1 10.45 ( 0.00%) 10.54 ( -0.82%) BAmean-99 4 4.88 ( 0.00%) 4.91 ( -0.52%) BAmean-99 7 3.60 ( 0.00%) 3.60 ( -0.08%) BAmean-99 12 3.23 ( 0.00%) 3.28 ( -1.60%) BAmean-99 18 4.14 ( 0.00%) 4.91 ( -18.58%) BAmean-99 20 5.56 ( 0.00%) 8.22 ( -48.04%) docker-ized readtwice microbenchmark ------------------------------------ This is Alex's modified readtwice case. Needed a few fixes, and I made it into a script. Updated version attached. Same machine, three runs per kernel, 40 containers per test. This is average MB/s over all containers. 5.9-rc2 5.9-rc2-lru ----------- ----------- 220.5 (3.3) 356.9 (0.5) That's a 62% improvement. [-- Attachment #2: Dockerfile --] [-- Type: text/plain, Size: 509 bytes --] FROM centos:8 MAINTAINER Alexs #WORKDIR /vm-scalability #RUN yum update -y && yum groupinstall "Development Tools" -y && yum clean all && \ #examples https://www.linuxtechi.com/build-docker-container-images-with-dockerfile/ RUN yum install git xfsprogs patch make gcc -y && yum clean all && \ git clone https://git.kernel.org/pub/scm/linux/kernel/git/wfg/vm-scalability.git/ && \ cd vm-scalability && make usemem COPY readtwice.patch /vm-scalability/ RUN cd vm-scalability && patch -p1 < readtwice.patch [-- Attachment #3: run.sh --] [-- Type: text/plain, Size: 1919 bytes --] #!/usr/bin/env bash # # Originally by Alex Shi <alex.shi-KPsoFbNs7GizrGE5bRqYAgC/G2K4zDHf@public.gmane.org> # Changes from Daniel Jordan <daniel.m.jordan-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" TAG='lrulock' runtime=300 nr_cont=$(nproc) cd "$SCRIPT_DIR" echo -e "starting $nr_cont containers\n" pids=() sudo docker build -t "$TAG" . nr_running_cont=$(sudo docker ps | sed '1 d' | wc -l) if (( nr_running_cont != 0 )); then echo "error: $nr_running_cont containers already running" exit 1 fi # start some testing containers for ((i=0; i < nr_cont; i++)); do sudo docker run --privileged=true --rm "$TAG" bash -c "sleep infinity" & done nr_running_cont=$(sudo docker ps | sed '1 d' | wc -l) until (( nr_running_cont == nr_cont )); do sleep .5 nr_running_cont=$(sudo docker ps | sed '1 d' | wc -l) done # do testing evn setup for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker exec --privileged=true -t $i \ bash -c "cd /vm-scalability/; bash ./case-lru-file-readtwice m" & pids+=($!) done wait "${pids[@]}" pids=() # kick testing for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker exec --privileged=true -t -e runtime=$runtime $i \ bash -c "cd /vm-scalability/; bash ./case-lru-file-readtwice r" & pids+=($!) done wait "${pids[@]}" pids=() # save results ts=$(date +%y-%m-%d_%H:%M:%S) f="$ts/summary.txt" mkdir "$ts" echo "$ts" >> "$f" uname -r >> "$f" for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker exec $i bash -c 'cat /tmp/vm-scalability-tmp/dd-output-*' &> "$ts/$i.out" & pids+=($!) done wait "${pids[@]}" pids=() grep 'copied' "$ts"/*.out | \ awk 'BEGIN {a=0;} { a+=$10 } END {print NR, a/(NR)}' | \ tee -a "$f" for i in `sudo docker ps | sed '1 d' | awk '{print $1}'`; do sudo docker stop $i &>/dev/null & done wait echo 'test finished' echo [-- Attachment #4: readtwice.patch --] [-- Type: text/plain, Size: 1876 bytes --] diff --git a/case-lru-file-readtwice b/case-lru-file-readtwice index 85533b248634..57cb97d121ae 100755 --- a/case-lru-file-readtwice +++ b/case-lru-file-readtwice @@ -15,23 +15,30 @@ . ./hw_vars -for i in `seq 1 $nr_task` -do - create_sparse_file $SPARSE_FILE-$i $((ROTATE_BYTES / nr_task)) - timeout --foreground -s INT ${runtime:-600} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-1-$i 2>&1 & - timeout --foreground -s INT ${runtime:-600} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-2-$i 2>&1 & -done +OUT_DIR=$(hostname)-${nr_task}c-$(((mem + (1<<29))>>30))g +TEST_CASES=${@:-$(echo case-*)} + +echo $((1<<30)) > /proc/sys/vm/max_map_count +echo $((1<<20)) > /proc/sys/kernel/threads-max +echo 1 > /proc/sys/vm/overcommit_memory +#echo 3 > /proc/sys/vm/drop_caches + + +i=1 + +if [ "$1" == "m" ];then + mount_tmpfs + create_sparse_root + create_sparse_file $SPARSE_FILE-$i $((ROTATE_BYTES)) + exit +fi + + +if [ "$1" == "r" ];then + (timeout --foreground -s INT ${runtime:-300} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-1-$i 2>&1)& + (timeout --foreground -s INT ${runtime:-300} dd bs=4k if=$SPARSE_FILE-$i of=/dev/null > $TMPFS_MNT/dd-output-2-$i 2>&1)& +fi wait sleep 1 -for file in $TMPFS_MNT/dd-output-* -do - [ -s "$file" ] || { - echo "dd output file empty: $file" >&2 - } - cat $file - rm $file -done - -rm `seq -f $SPARSE_FILE-%g 1 $nr_task` diff --git a/hw_vars b/hw_vars index 8731cefb9f57..ceeaa9f17c0b 100755 --- a/hw_vars +++ b/hw_vars @@ -1,4 +1,4 @@ -#!/bin/sh +#!/bin/sh -e if [ -n "$runtime" ]; then USEMEM="$CMD ./usemem --runtime $runtime" @@ -43,7 +43,7 @@ create_loop_devices() modprobe loop 2>/dev/null [ -e "/dev/loop0" ] || modprobe loop 2>/dev/null - for i in $(seq 0 8) + for i in $(seq 0 104) do [ -e "/dev/loop$i" ] && continue mknod /dev/loop$i b 7 $i
next prev parent reply other threads:[~2020-09-15 17:30 UTC|newest] Thread overview: 201+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-24 12:54 [PATCH v18 00/32] per memcg lru_lock Alex Shi 2020-08-24 12:54 ` [PATCH v18 01/32] mm/memcg: warning on !memcg after readahead page charged Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 02/32] mm/memcg: bail out early from swap accounting when memcg is disabled Alex Shi 2020-08-24 12:54 ` [PATCH v18 03/32] mm/thp: move lru_add_page_tail func to huge_memory.c Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 04/32] mm/thp: clean up lru_add_page_tail Alex Shi 2020-08-24 12:54 ` [PATCH v18 05/32] mm/thp: remove code path which never got into Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 06/32] mm/thp: narrow lru locking Alex Shi 2020-09-10 13:49 ` Matthew Wilcox 2020-09-10 13:49 ` Matthew Wilcox 2020-09-11 3:37 ` Alex Shi 2020-09-11 3:37 ` Alex Shi 2020-09-13 15:27 ` Matthew Wilcox 2020-09-13 15:27 ` Matthew Wilcox 2020-09-19 1:00 ` Hugh Dickins 2020-09-19 1:00 ` Hugh Dickins 2020-08-24 12:54 ` [PATCH v18 07/32] mm/swap.c: stop deactivate_file_page if page not on lru Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 08/32] mm/vmscan: remove unnecessary lruvec adding Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 09/32] mm/page_idle: no unlikely double check for idle page counting Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 10/32] mm/compaction: rename compact_deferred as compact_should_defer Alex Shi 2020-08-24 12:54 ` [PATCH v18 11/32] mm/memcg: add debug checking in lock_page_memcg Alex Shi 2020-08-24 12:54 ` [PATCH v18 12/32] mm/memcg: optimize mem_cgroup_page_lruvec Alex Shi 2020-08-24 12:54 ` [PATCH v18 13/32] mm/swap.c: fold vm event PGROTATED into pagevec_move_tail_fn Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 14/32] mm/lru: move lru_lock holding in func lru_note_cost_page Alex Shi 2020-08-24 12:54 ` [PATCH v18 15/32] mm/lru: move lock into lru_note_cost Alex Shi 2020-09-21 21:36 ` Hugh Dickins 2020-09-21 21:36 ` Hugh Dickins 2020-09-21 21:36 ` Hugh Dickins 2020-09-21 22:03 ` Hugh Dickins 2020-09-21 22:03 ` Hugh Dickins 2020-09-22 3:39 ` Alex Shi 2020-09-22 3:39 ` Alex Shi 2020-09-22 3:38 ` Alex Shi 2020-09-22 3:38 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 16/32] mm/lru: introduce TestClearPageLRU Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-09-21 23:16 ` Hugh Dickins 2020-09-21 23:16 ` Hugh Dickins 2020-09-21 23:16 ` Hugh Dickins 2020-09-22 3:53 ` Alex Shi 2020-09-22 3:53 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 17/32] mm/compaction: do page isolation first in compaction Alex Shi 2020-09-21 23:49 ` Hugh Dickins 2020-09-21 23:49 ` Hugh Dickins 2020-09-22 4:57 ` Alex Shi 2020-09-22 4:57 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 18/32] mm/thp: add tail pages into lru anyway in split_huge_page() Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 19/32] mm/swap.c: serialize memcg changes in pagevec_lru_move_fn Alex Shi 2020-09-22 0:42 ` Hugh Dickins 2020-09-22 0:42 ` Hugh Dickins 2020-09-22 0:42 ` Hugh Dickins 2020-09-22 5:00 ` Alex Shi 2020-09-22 5:00 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 20/32] mm/lru: replace pgdat lru_lock with lruvec lock Alex Shi 2020-09-22 5:27 ` Hugh Dickins 2020-09-22 5:27 ` Hugh Dickins 2020-09-22 5:27 ` Hugh Dickins 2020-09-22 8:58 ` Alex Shi 2020-09-22 8:58 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 21/32] mm/lru: introduce the relock_page_lruvec function Alex Shi 2020-09-22 5:40 ` Hugh Dickins 2020-09-22 5:40 ` Hugh Dickins 2020-09-22 5:40 ` Hugh Dickins 2020-08-24 12:54 ` [PATCH v18 22/32] mm/vmscan: use relock for move_pages_to_lru Alex Shi 2020-09-22 5:44 ` Hugh Dickins 2020-09-22 5:44 ` Hugh Dickins 2020-09-23 1:55 ` Alex Shi 2020-09-23 1:55 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 23/32] mm/lru: revise the comments of lru_lock Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-09-22 5:48 ` Hugh Dickins 2020-09-22 5:48 ` Hugh Dickins 2020-08-24 12:54 ` [PATCH v18 24/32] mm/pgdat: remove pgdat lru_lock Alex Shi 2020-09-22 5:53 ` Hugh Dickins 2020-09-22 5:53 ` Hugh Dickins 2020-09-23 1:55 ` Alex Shi 2020-09-23 1:55 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 25/32] mm/mlock: remove lru_lock on TestClearPageMlocked in munlock_vma_page Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-26 5:52 ` Alex Shi 2020-08-26 5:52 ` Alex Shi 2020-09-22 6:13 ` Hugh Dickins 2020-09-22 6:13 ` Hugh Dickins 2020-09-22 6:13 ` Hugh Dickins 2020-09-23 1:58 ` Alex Shi 2020-09-23 1:58 ` Alex Shi 2020-08-24 12:54 ` [PATCH v18 26/32] mm/mlock: remove __munlock_isolate_lru_page Alex Shi 2020-08-24 12:54 ` Alex Shi 2020-08-24 12:55 ` [PATCH v18 27/32] mm/swap.c: optimizing __pagevec_lru_add lru_lock Alex Shi 2020-08-24 12:55 ` Alex Shi 2020-08-26 9:07 ` Alex Shi 2020-08-24 12:55 ` [PATCH v18 28/32] mm/compaction: Drop locked from isolate_migratepages_block Alex Shi 2020-08-24 12:55 ` [PATCH v18 29/32] mm: Identify compound pages sooner in isolate_migratepages_block Alex Shi 2020-08-24 12:55 ` Alex Shi 2020-08-24 12:55 ` [PATCH v18 30/32] mm: Drop use of test_and_set_skip in favor of just setting skip Alex Shi 2020-08-24 12:55 ` [PATCH v18 31/32] mm: Add explicit page decrement in exception path for isolate_lru_pages Alex Shi 2020-08-24 12:55 ` Alex Shi 2020-09-09 1:01 ` Matthew Wilcox 2020-09-09 1:01 ` Matthew Wilcox 2020-09-09 15:43 ` Alexander Duyck 2020-09-09 15:43 ` Alexander Duyck 2020-09-09 15:43 ` Alexander Duyck 2020-09-09 17:07 ` Matthew Wilcox 2020-09-09 17:07 ` Matthew Wilcox 2020-09-09 18:24 ` Hugh Dickins 2020-09-09 18:24 ` Hugh Dickins 2020-09-09 18:24 ` Hugh Dickins 2020-09-09 20:15 ` Matthew Wilcox 2020-09-09 20:15 ` Matthew Wilcox 2020-09-09 21:05 ` Hugh Dickins 2020-09-09 21:05 ` Hugh Dickins 2020-09-09 21:05 ` Hugh Dickins 2020-09-09 21:17 ` Alexander Duyck 2020-09-09 21:17 ` Alexander Duyck 2020-09-09 21:17 ` Alexander Duyck 2020-08-24 12:55 ` [PATCH v18 32/32] mm: Split release_pages work into 3 passes Alex Shi 2020-08-24 12:55 ` Alex Shi 2020-08-24 18:42 ` [PATCH v18 00/32] per memcg lru_lock Andrew Morton 2020-08-24 19:50 ` Qian Cai 2020-08-24 19:50 ` Qian Cai 2020-08-24 20:24 ` Hugh Dickins 2020-08-24 20:24 ` Hugh Dickins 2020-08-24 20:24 ` Hugh Dickins 2020-08-25 1:56 ` Daniel Jordan 2020-08-25 1:56 ` Daniel Jordan 2020-08-25 3:26 ` Alex Shi 2020-08-25 3:26 ` Alex Shi 2020-08-25 11:39 ` Matthew Wilcox 2020-08-25 11:39 ` Matthew Wilcox 2020-08-26 1:19 ` Daniel Jordan 2020-08-26 8:59 ` Alex Shi 2020-08-26 8:59 ` Alex Shi 2020-08-28 1:40 ` Daniel Jordan 2020-08-28 1:40 ` Daniel Jordan 2020-08-28 5:22 ` Alex Shi 2020-08-28 5:22 ` Alex Shi 2020-09-09 2:44 ` Aaron Lu 2020-09-09 2:44 ` Aaron Lu 2020-09-09 11:40 ` Michal Hocko 2020-08-25 8:52 ` Alex Shi 2020-08-25 8:52 ` Alex Shi 2020-08-25 13:00 ` Alex Shi 2020-08-25 13:00 ` Alex Shi 2020-08-27 7:01 ` Hugh Dickins 2020-08-27 7:01 ` Hugh Dickins 2020-08-27 12:20 ` Race between freeing and waking page Matthew Wilcox 2020-09-08 23:41 ` [PATCH v18 00/32] per memcg lru_lock: reviews Hugh Dickins 2020-09-08 23:41 ` Hugh Dickins 2020-09-09 2:24 ` Wei Yang 2020-09-09 2:24 ` Wei Yang 2020-09-09 15:08 ` Alex Shi 2020-09-09 15:08 ` Alex Shi 2020-09-09 23:16 ` Hugh Dickins 2020-09-09 23:16 ` Hugh Dickins 2020-09-11 2:50 ` Alex Shi 2020-09-11 2:50 ` Alex Shi 2020-09-12 2:13 ` Hugh Dickins 2020-09-12 2:13 ` Hugh Dickins 2020-09-13 14:21 ` Alex Shi 2020-09-13 14:21 ` Alex Shi 2020-09-15 8:21 ` Hugh Dickins 2020-09-15 8:21 ` Hugh Dickins 2020-09-15 8:21 ` Hugh Dickins 2020-09-15 16:58 ` Daniel Jordan [this message] 2020-09-15 16:58 ` Daniel Jordan 2020-09-16 12:44 ` Alex Shi 2020-09-17 2:37 ` Alex Shi 2020-09-17 2:37 ` Alex Shi 2020-09-17 14:35 ` Daniel Jordan 2020-09-17 14:35 ` Daniel Jordan 2020-09-17 15:39 ` Alexander Duyck 2020-09-17 15:39 ` Alexander Duyck 2020-09-17 15:39 ` Alexander Duyck 2020-09-17 16:48 ` Daniel Jordan 2020-09-17 16:48 ` Daniel Jordan 2020-09-12 8:38 ` Hugh Dickins 2020-09-12 8:38 ` Hugh Dickins 2020-09-12 8:38 ` Hugh Dickins 2020-09-13 14:22 ` Alex Shi 2020-09-13 14:22 ` Alex Shi 2020-09-09 16:11 ` Alexander Duyck 2020-09-09 16:11 ` Alexander Duyck 2020-09-09 16:11 ` Alexander Duyck 2020-09-10 0:32 ` Hugh Dickins 2020-09-10 0:32 ` Hugh Dickins 2020-09-10 0:32 ` Hugh Dickins 2020-09-10 14:24 ` Alexander Duyck 2020-09-10 14:24 ` Alexander Duyck 2020-09-10 14:24 ` Alexander Duyck 2020-09-12 5:12 ` Hugh Dickins 2020-09-12 5:12 ` Hugh Dickins 2020-09-12 5:12 ` Hugh Dickins 2020-08-25 7:21 ` [PATCH v18 00/32] per memcg lru_lock Michal Hocko 2020-08-25 7:21 ` Michal Hocko
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