From: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
To: axboe@kernel.dk
Cc: linux-block@vger.kernel.org, danil.kipnis@cloud.ionos.com,
jinpu.wang@cloud.ionos.com,
Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Subject: [PATCH RFC V4 0/4] block: add two statistic tables
Date: Sun, 10 Jan 2021 10:44:53 +0100 [thread overview]
Message-ID: <20210110094457.6624-1-guoqing.jiang@cloud.ionos.com> (raw)
Hi,
No more comments since the last version, so this version is just rebase
with latest tree.
To make the tables work, it is necessary to enable BLK_ADDITIONAL_DISKSTAT
option, and also enable the sysfs node.
# echo 1 > /sys/block/md0/queue/io_extra_stats
After that, the size and latency of io are recorded in each table.
Thanks,
Guoqing
RFC V3: https://marc.info/?l=linux-block&m=159730633416534&w=2
* Move the #ifdef CONFIG_BLK_ADDITIONAL_DISKSTAT into the function body
per Johannes's comment.
* Tweak the output of two tables to make they are more intuitive
RFC V2: https://marc.info/?l=linux-block&m=159467483514062&w=2
* don't call ktime_get_ns and drop unnecessary patches.
* add io_extra_stats to avoid potential overhead.
RFC V1: https://marc.info/?l=linux-block&m=159419516730386&w=2
Guoqing Jiang (4):
block: add a statistic table for io latency
block: add a statistic table for io sector
block: add io_extra_stats node
block: call blk_additional_{latency,sector} only when io_extra_stats
is true
Documentation/ABI/testing/sysfs-block | 26 +++++++++
Documentation/block/queue-sysfs.rst | 6 +++
block/Kconfig | 9 ++++
block/blk-core.c | 51 ++++++++++++++++++
block/blk-sysfs.c | 10 ++++
block/genhd.c | 78 +++++++++++++++++++++++++++
include/linux/blkdev.h | 6 +++
include/linux/part_stat.h | 8 +++
8 files changed, 194 insertions(+)
--
2.17.1
next reply other threads:[~2021-01-10 9:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-10 9:44 Guoqing Jiang [this message]
2021-01-10 9:44 ` [PATCH RFC V4 1/4] block: add a statistic table for io latency Guoqing Jiang
2021-01-10 9:44 ` [PATCH RFC V4 2/4] block: add a statistic table for io sector Guoqing Jiang
2021-01-10 9:44 ` [PATCH RFC V4 3/4] block: add io_extra_stats node Guoqing Jiang
2021-01-10 9:44 ` [PATCH RFC V4 4/4] block: call blk_additional_{latency,sector} only when io_extra_stats is true Guoqing Jiang
2021-01-20 12:52 ` [PATCH RFC V4 0/4] block: add two statistic tables Jinpu Wang
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