From: Hui Zhu <zhuhui@xiaomi.com> To: <minchan@kernel.org>, <ngupta@vflare.org>, <sergey.senozhatsky.work@gmail.com>, <hughd@google.com>, <rostedt@goodmis.org>, <mingo@redhat.com>, <peterz@infradead.org>, <acme@kernel.org>, <alexander.shishkin@linux.intel.com>, <akpm@linux-foundation.org>, <mhocko@suse.com>, <hannes@cmpxchg.org>, <mgorman@techsingularity.net>, <vbabka@suse.cz>, <zhuhui@xiaomi.com>, <redkoi@virtuozzo.com>, <luto@kernel.org>, <kirill.shutemov@linux.intel.com>, <geliangtang@163.com>, <baiyaowei@cmss.chinamobile.com>, <dan.j.williams@intel.com>, <vdavydov@virtuozzo.com>, <aarcange@redhat.com>, <dvlasenk@redhat.com>, <jmarchan@redhat.com>, <koct9i@gmail.com>, <yang.shi@linaro.org>, <dave.hansen@linux.intel.com>, <vkuznets@redhat.com>, <vitalywool@gmail.com>, <ross.zwisler@linux.intel.com>, <tglx@linutronix.de>, <kwapulinski.piotr@gmail.com>, <axboe@fb.com>, <mchristi@redhat.com>, <joe@perches.com>, <namit@vmware.com>, <riel@redhat.com>, <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org> Cc: <teawater@gmail.com> Subject: [RFC 0/4] ZRAM: make it just store the high compression rate page Date: Mon, 22 Aug 2016 16:25:05 +0800 [thread overview] Message-ID: <1471854309-30414-1-git-send-email-zhuhui@xiaomi.com> (raw) Current ZRAM just can store all pages even if the compression rate of a page is really low. So the compression rate of ZRAM is out of control when it is running. In my part, I did some test and record with ZRAM. The compression rate is about 40%. This series of patches make ZRAM can just store the page that the compressed size is smaller than a value. With these patches, I set the value to 2048 and did the same test with before. The compression rate is about 20%. The times of lowmemorykiller also decreased. Hui Zhu (4): vmscan.c: shrink_page_list: unmap anon pages after pageout Add non-swap page flag to mark a page will not swap ZRAM: do not swap the pages that compressed size bigger than non_swap vmscan.c: zram: add non swap support for shmem file pages drivers/block/zram/Kconfig | 11 +++ drivers/block/zram/zram_drv.c | 38 +++++++++++ drivers/block/zram/zram_drv.h | 4 + fs/proc/meminfo.c | 6 + include/linux/mm_inline.h | 20 +++++ include/linux/mmzone.h | 3 include/linux/page-flags.h | 8 ++ include/linux/rmap.h | 5 + include/linux/shmem_fs.h | 6 + include/trace/events/mmflags.h | 9 ++ kernel/events/uprobes.c | 16 ++++ mm/Kconfig | 9 ++ mm/memory.c | 34 ++++++++++ mm/migrate.c | 4 + mm/mprotect.c | 8 ++ mm/page_io.c | 11 ++- mm/rmap.c | 23 ++++++ mm/shmem.c | 77 +++++++++++++++++----- mm/vmscan.c | 139 +++++++++++++++++++++++++++++++++++------ 19 files changed, 387 insertions(+), 44 deletions(-)
WARNING: multiple messages have this Message-ID (diff)
From: Hui Zhu <zhuhui@xiaomi.com> To: minchan@kernel.org, ngupta@vflare.org, sergey.senozhatsky.work@gmail.com, hughd@google.com, rostedt@goodmis.org, mingo@redhat.com, peterz@infradead.org, acme@kernel.org, alexander.shishkin@linux.intel.com, akpm@linux-foundation.org, mhocko@suse.com, hannes@cmpxchg.org, mgorman@techsingularity.net, vbabka@suse.cz, zhuhui@xiaomi.com, redkoi@virtuozzo.com, luto@kernel.org, kirill.shutemov@linux.intel.com, geliangtang@163.com, baiyaowei@cmss.chinamobile.com, dan.j.williams@intel.com, vdavydov@virtuozzo.com, aarcange@redhat.com, dvlasenk@redhat.com, jmarchan@redhat.com, koct9i@gmail.com, yang.shi@linaro.org, dave.hansen@linux.intel.com, vkuznets@redhat.com, vitalywool@gmail.com, ross.zwisler@linux.intel.com, tglx@linutronix.de, kwapulinski.piotr@gmail.com, axboe@fb.com, mchristi@redhat.com, joe@perches.com, namit@vmware.com, riel@redhat.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: teawater@gmail.com Subject: [RFC 0/4] ZRAM: make it just store the high compression rate page Date: Mon, 22 Aug 2016 16:25:05 +0800 [thread overview] Message-ID: <1471854309-30414-1-git-send-email-zhuhui@xiaomi.com> (raw) Current ZRAM just can store all pages even if the compression rate of a page is really low. So the compression rate of ZRAM is out of control when it is running. In my part, I did some test and record with ZRAM. The compression rate is about 40%. This series of patches make ZRAM can just store the page that the compressed size is smaller than a value. With these patches, I set the value to 2048 and did the same test with before. The compression rate is about 20%. The times of lowmemorykiller also decreased. Hui Zhu (4): vmscan.c: shrink_page_list: unmap anon pages after pageout Add non-swap page flag to mark a page will not swap ZRAM: do not swap the pages that compressed size bigger than non_swap vmscan.c: zram: add non swap support for shmem file pages drivers/block/zram/Kconfig | 11 +++ drivers/block/zram/zram_drv.c | 38 +++++++++++ drivers/block/zram/zram_drv.h | 4 + fs/proc/meminfo.c | 6 + include/linux/mm_inline.h | 20 +++++ include/linux/mmzone.h | 3 include/linux/page-flags.h | 8 ++ include/linux/rmap.h | 5 + include/linux/shmem_fs.h | 6 + include/trace/events/mmflags.h | 9 ++ kernel/events/uprobes.c | 16 ++++ mm/Kconfig | 9 ++ mm/memory.c | 34 ++++++++++ mm/migrate.c | 4 + mm/mprotect.c | 8 ++ mm/page_io.c | 11 ++- mm/rmap.c | 23 ++++++ mm/shmem.c | 77 +++++++++++++++++----- mm/vmscan.c | 139 +++++++++++++++++++++++++++++++++++------ 19 files changed, 387 insertions(+), 44 deletions(-) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2016-08-22 8:43 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-08-22 8:25 Hui Zhu [this message] 2016-08-22 8:25 ` [RFC 0/4] ZRAM: make it just store the high compression rate page Hui Zhu 2016-08-22 8:25 ` [RFC 1/4] vmscan.c: shrink_page_list: unmap anon pages after pageout Hui Zhu 2016-08-22 8:25 ` Hui Zhu 2016-08-22 8:25 ` [RFC 2/4] Add non-swap page flag to mark a page will not swap Hui Zhu 2016-08-22 8:25 ` Hui Zhu 2016-09-06 15:35 ` Steven Rostedt 2016-09-06 15:35 ` Steven Rostedt 2016-08-22 8:25 ` [RFC 3/4] ZRAM: do not swap the page that compressed size bigger than non_swap Hui Zhu 2016-08-22 8:25 ` Hui Zhu 2016-08-22 8:25 ` [RFC 4/4] vmscan.c: zram: add non swap support for shmem file pages Hui Zhu 2016-08-22 8:25 ` Hui Zhu 2016-08-24 1:04 ` [RFC 0/4] ZRAM: make it just store the high compression rate page Minchan Kim 2016-08-24 1:04 ` Minchan Kim 2016-08-24 1:29 ` Hui Zhu 2016-08-24 1:29 ` Hui Zhu 2016-08-25 6:09 ` Sergey Senozhatsky 2016-08-25 6:09 ` Sergey Senozhatsky 2016-08-25 8:25 ` Hui Zhu 2016-08-25 8:25 ` Hui Zhu 2016-09-05 2:18 ` Minchan Kim 2016-09-05 2:18 ` Minchan Kim 2016-09-05 3:59 ` Sergey Senozhatsky 2016-09-05 3:59 ` Sergey Senozhatsky 2016-09-05 5:12 ` Hui Zhu 2016-09-05 5:12 ` Hui Zhu 2016-09-05 5:51 ` Minchan Kim 2016-09-05 5:51 ` Minchan Kim 2016-09-05 6:02 ` Hui Zhu 2016-09-05 6:02 ` Hui Zhu 2016-09-05 2:12 ` Minchan Kim 2016-09-05 2:12 ` Minchan Kim
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