Re: [writeback] 6903673566d: +2.5% fileio.requests_per_sec

From: Fengguang Wu
Date: Thu Apr 10 2014 - 09:17:53 EST

On Thu, Apr 10, 2014 at 09:08:21PM +0800, Fengguang Wu wrote:
> On Thu, Apr 10, 2014 at 08:41:37PM +0800, Fengguang Wu wrote:
> > Hi Jan,
> >
> > I tried your writeback dirty list patchset and noticed some ups/downs.
> > The main performance changes are
> >
> > 1) +2.5% fileio.requests_per_sec
> > 2) -7.1% iostat.md0.wkB/s
> >
> > git://bee.sh.intel.com/git/wfg/linux-devel.git jan-dirty-list
> > commit 6903673566d0289680e593dac088c787d119b067 ("writeback: Replace several writeback lists with inode tagging")
> >
> > 836ecc5f024669e 6903673566d0289680e593dac
> > --------------- -------------------------
> > 6526 ~ 0% +3.2% 6736 ~ 0% snb-drag/sysbench/fileio/600s-100%-1HDD-xfs-64G-1024-seqrewr-sync
> > 6441 ~ 0% +1.8% 6558 ~ 0% snb-drag/sysbench/fileio/600s-100%-1HDD-xfs-64G-1024-seqwr-sync
> > 12968 ~ 0% +2.5% 13295 ~ 0% TOTAL fileio.requests_per_sec
> >
> > 836ecc5f024669e 6903673566d0289680e593dac
> > --------------- -------------------------
> > 398147 ~ 0% -7.1% 369866 ~ 0% lkp-st02/micro/dd-write/11HDD-RAID5-cfq-xfs-10dd
> > 398147 ~ 0% -7.1% 369866 ~ 0% TOTAL iostat.md0.wkB/s
>
> Here are the complete power performance comparisons:
>
> # the higher index, the better
> 98 perf-index ea87e2e7e0905325c58cf5643
> 105 power-index ea87e2e7e0905325c58cf5643
> 99 latency-index ea87e2e7e0905325c58cf5643

Note that some few performance changes are caused by CPU frequency
unstableness. Sorry for showing results with some defects - I only
realized that after reading through the results..

v3.14-rc8 ea87e2e7e0905325c58cf5643
--------------- -------------------------
1.12 ~ 0% -0.4% 1.12 brickland1/micro/will-it-scale/brk1
1.14 ~ 0% +2.0% 1.16 brickland1/micro/will-it-scale/context_switch1
1.15 ~ 1% +0.6% 1.16 brickland1/micro/will-it-scale/eventfd1
1.23 ~ 2% +7.6% 1.32 brickland1/micro/will-it-scale/futex1
1.24 ~ 4% -4.2% 1.19 brickland1/micro/will-it-scale/futex2
1.15 ~ 1% -0.1% 1.15 brickland1/micro/will-it-scale/futex3
1.18 ~ 3% -4.2% 1.13 brickland1/micro/will-it-scale/futex4
1.14 ~ 1% -0.6% 1.13 brickland1/micro/will-it-scale/getppid1
1.09 ~14% +5.6% 1.15 brickland1/micro/will-it-scale/lock1
1.13 ~ 1% +1.9% 1.15 brickland1/micro/will-it-scale/lseek1
1.18 ~ 2% +3.6% 1.22 brickland1/micro/will-it-scale/malloc1
1.13 ~ 0% +0.6% 1.14 brickland1/micro/will-it-scale/malloc2
1.21 ~ 1% +2.3% 1.24 brickland1/micro/will-it-scale/mmap1
1.18 ~ 1% +6.6% 1.26 brickland1/micro/will-it-scale/mmap2
1.10 ~15% +5.8% 1.16 brickland1/micro/will-it-scale/open1
1.11 ~15% +4.9% 1.16 brickland1/micro/will-it-scale/open2
1.08 ~13% +4.2% 1.13 brickland1/micro/will-it-scale/page_fault1
1.08 ~14% +5.8% 1.14 brickland1/micro/will-it-scale/page_fault2
1.09 ~14% +5.0% 1.14 brickland1/micro/will-it-scale/page_fault3
1.08 ~14% +4.2% 1.13 brickland1/micro/will-it-scale/pipe1
1.09 ~15% +5.6% 1.15 brickland1/micro/will-it-scale/poll1
1.07 ~14% +5.2% 1.13 brickland1/micro/will-it-scale/poll2
1.09 ~14% +4.9% 1.14 brickland1/micro/will-it-scale/posix_semaphore1
1.07 ~14% +10.8% 1.19 brickland1/micro/will-it-scale/pread1
1.12 ~15% +4.5% 1.17 brickland1/micro/will-it-scale/pread2
1.08 ~14% +5.3% 1.14 brickland1/micro/will-it-scale/pthread_mutex1
1.08 ~14% +4.3% 1.13 brickland1/micro/will-it-scale/pthread_mutex2
1.09 ~14% +4.0% 1.13 brickland1/micro/will-it-scale/pwrite1
1.07 ~14% +5.1% 1.12 brickland1/micro/will-it-scale/pwrite2
1.07 ~14% +8.2% 1.16 brickland1/micro/will-it-scale/read1
1.07 ~14% +5.3% 1.13 brickland1/micro/will-it-scale/read2
1.09 ~14% +6.4% 1.16 brickland1/micro/will-it-scale/readseek
1.14 ~ 0% +0.4% 1.14 brickland1/micro/will-it-scale/sched_yield
1.36 ~ 5% +1.3% 1.38 brickland1/micro/will-it-scale/signal1
1.15 ~ 2% -2.4% 1.12 brickland1/micro/will-it-scale/unix1
1.11 ~ 0% +1.5% 1.13 brickland1/micro/will-it-scale/unlink1
1.18 ~ 1% +0.8% 1.19 brickland1/micro/will-it-scale/unlink2
1.13 ~ 0% +0.2% 1.13 brickland1/micro/will-it-scale/write1
1.15 ~ 1% +0.6% 1.16 brickland1/micro/will-it-scale/writeseek
0.63 +0.0% 0.63 brickland2/micro/vm-scalability/300s-anon-cow-rand-64G
0.63 +0.0% 0.63 brickland2/micro/vm-scalability/300s-anon-cow-rand-mt-64G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-anon-cow-seq-1T
0.64 -1.6% 0.63 brickland2/micro/vm-scalability/300s-anon-cow-seq-mt-1T
0.94 ~27% -28.7% 0.67 brickland2/micro/vm-scalability/300s-anon-r-rand-mt
0.88 ~28% -29.1% 0.62 brickland2/micro/vm-scalability/300s-anon-r-rand
0.94 ~28% -28.3% 0.67 brickland2/micro/vm-scalability/300s-anon-r-seq-mt
0.87 ~28% -28.7% 0.62 brickland2/micro/vm-scalability/300s-anon-r-seq
0.92 ~31% -31.1% 0.63 brickland2/micro/vm-scalability/300s-anon-rx-rand-mt
0.88 ~28% -28.0% 0.63 brickland2/micro/vm-scalability/300s-anon-rx-seq-mt
0.63 +0.0% 0.63 brickland2/micro/vm-scalability/300s-anon-w-rand-64G
0.63 +0.0% 0.63 brickland2/micro/vm-scalability/300s-anon-w-rand-mt-64G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-anon-w-seq-1T
0.66 +0.0% 0.66 brickland2/micro/vm-scalability/300s-anon-w-seq-mt-64G
0.63 +0.0% 0.63 brickland2/micro/vm-scalability/300s-anon-wx-rand-mt-64G
0.88 ~28% -28.0% 0.63 brickland2/micro/vm-scalability/300s-lru-file-mmap-read-rand
0.89 ~28% -28.8% 0.63 brickland2/micro/vm-scalability/300s-lru-file-mmap-read
0.63 ~ 0% +0.0% 0.63 brickland2/micro/vm-scalability/300s-lru-file-readonce
0.92 ~31% -31.1% 0.63 brickland2/micro/vm-scalability/300s-lru-file-readtwice
0.61 +0.0% 0.61 brickland2/micro/vm-scalability/300s-lru-shm-128G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-lru-shm-rand-64G
0.87 ~28% -28.7% 0.62 brickland2/micro/vm-scalability/300s-mmap-pread-rand-mt
0.92 ~32% -32.2% 0.62 brickland2/micro/vm-scalability/300s-mmap-pread-rand
0.94 ~28% -28.3% 0.67 brickland2/micro/vm-scalability/300s-mmap-pread-seq-mt
0.89 ~30% -30.3% 0.62 brickland2/micro/vm-scalability/300s-mmap-pread-seq
0.87 ~28% -28.7% 0.62 brickland2/micro/vm-scalability/300s-mmap-xread-rand-mt
0.88 ~27% -27.3% 0.64 brickland2/micro/vm-scalability/300s-mmap-xread-seq-mt
0.89 ~30% -30.3% 0.62 brickland2/micro/vm-scalability/300s-mremap-xread-rand-mt
0.63 +0.0% 0.63 brickland2/micro/vm-scalability/300s-msync-mt-64G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-remap-128G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-shm-pread-rand-16G
0.67 +0.0% 0.67 brickland2/micro/vm-scalability/300s-shm-pread-rand-mt-16G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-shm-pread-seq-1T
0.67 +0.0% 0.67 brickland2/micro/vm-scalability/300s-shm-pread-seq-mt-1T
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-shm-xread-rand-16G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-shm-xread-rand-mt-16G
0.62 +0.0% 0.62 brickland2/micro/vm-scalability/300s-shm-xread-seq-1T
0.63 -1.6% 0.62 brickland2/micro/vm-scalability/300s-shm-xread-seq-mt-1T
0.89 ~27% -27.7% 0.64 brickland2/micro/vm-scalability/300s-small-allocs-mt
0.87 ~28% -28.7% 0.62 brickland2/micro/vm-scalability/300s-small-allocs
0.61 +0.0% 0.61 brickland2/micro/vm-scalability/300s-truncate-16G
2.44 +0.0% 2.44 grantley/micro/kbuild/200%-1HDD-ext4
2.44 ~ 0% -0.0% 2.44 grantley/micro/kbuild/200%
2.08 +0.0% 2.08 grantley/micro/kbuild/50%-1HDD-ext4
2.08 +0.0% 2.08 grantley/micro/kbuild/50%
2.26 +0.0% 2.26 lkp-nex04/micro/ebizzy/200%-100-10
3.34 -0.3% 3.33 lkp-sb03/micro/nepim/300s-100%-tcp
3.31 +0.6% 3.33 lkp-sb03/micro/nepim/300s-100%-tcp6
3.49 -3.2% 3.38 lkp-sb03/micro/nepim/300s-100%-udp
3.49 -2.6% 3.40 lkp-sb03/micro/nepim/300s-100%-udp6
3.47 -4.0% 3.33 lkp-sb03/micro/nepim/300s-25%-tcp
3.36 +0.0% 3.36 lkp-sb03/micro/nepim/300s-25%-tcp6
3.49 +0.0% 3.49 lkp-sb03/micro/nepim/300s-25%-udp
3.49 +0.0% 3.49 lkp-sb03/micro/nepim/300s-25%-udp6
3.34 ~ 0% +0.2% 3.35 lkp-sb03/micro/nuttcp/300s
3.08 ~ 0% +0.2% 3.09 lkp-snb01/micro/hackbench/1600%-process-pipe
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/1600%-process-socket
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/1600%-threads-pipe
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/1600%-threads-socket
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/50%-process-pipe
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/50%-process-socket
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/50%-threads-pipe
3.09 ~ 0% +0.0% 3.09 lkp-snb01/micro/hackbench/50%-threads-socket
2.80 ~ 0% -0.0% 2.80 lkp-ws02/micro/dd-write/11HDD-JBOD-cfq-ext4-100dd
2.78 ~ 0% -0.0% 2.78 lkp-ws02/micro/dd-write/11HDD-JBOD-cfq-ext4-10dd
2.76 ~ 0% +0.2% 2.77 ~ 0% lkp-ws02/micro/dd-write/11HDD-JBOD-cfq-ext4-1dd
2.80 ~ 0% -0.0% 2.80 lkp-ws02/micro/dd-write/11HDD-JBOD-cfq-xfs-100dd
2.76 ~ 0% -0.1% 2.76 lkp-ws02/micro/dd-write/11HDD-JBOD-cfq-xfs-10dd
2.72 ~ 0% -1.1% 2.69 lkp-ws02/micro/dd-write/11HDD-JBOD-cfq-xfs-1dd
2.78 ~ 0% +0.4% 2.79 lkp-ws02/micro/dd-write/11HDD-RAID5-cfq-ext4-100dd
2.76 ~ 0% +0.1% 2.76 lkp-ws02/micro/dd-write/11HDD-RAID5-cfq-ext4-10dd
2.69 ~ 0% -0.4% 2.68 lkp-ws02/micro/dd-write/11HDD-RAID5-cfq-ext4-1dd
2.73 ~ 0% -0.2% 2.72 lkp-ws02/micro/dd-write/11HDD-RAID5-cfq-xfs-100dd
2.66 ~ 0% -1.1% 2.63 lkp-ws02/micro/dd-write/11HDD-RAID5-cfq-xfs-10dd
2.69 ~ 0% +0.1% 2.69 lkp-ws02/micro/dd-write/11HDD-RAID5-cfq-xfs-1dd
2.70 ~ 3% +8.6% 2.93 ~ 0% nhm-white/sysbench/oltp/600s-100%-1000000
3.51 ~ 0% -3.7% 3.38 nhm8/micro/dbench/100%
1.79 ~ 0% +0.1% 1.79 snb-drag/sysbench/fileio/600s-100%-1HDD-ext4-64G-1024-rndrd-sync
2.93 ~ 0% +0.0% 2.93 xps2/micro/pigz/100%
185.24 -2.0% 181.62 TOTAL turbostat.GHz
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