FYI, we applied your patches and noticed the below changes on
commit 952648324b969f3fc22d3a2a78f4715c0bf43d7f ("writeback: Per-sb dirty
tracking")
test case: lkp-sb02/blogbench/1HDD-ext4
df3be46bdbab23e 952648324b969f3fc22d3a2a7
--------------- -------------------------
834 ± 3% -24.9% 627 ± 3% TOTAL blogbench.write_score
6043 ± 3% -74.0% 1571 ± 2% TOTAL
slabinfo.jbd2_journal_head.active_objs
174 ± 3% -66.9% 57 ± 3% TOTAL
slabinfo.jbd2_journal_head.num_slabs
174 ± 3% -66.9% 57 ± 3% TOTAL
slabinfo.jbd2_journal_head.active_slabs
6293 ± 3% -66.8% 2091 ± 2% TOTAL
slabinfo.jbd2_journal_head.num_objs
171025 ±32% +78.6% 305412 ±28% TOTAL cpuidle.C1-SNB.time
1013700 ±36% +80.6% 1830682 ±17% TOTAL cpuidle.C1E-SNB.time
0.11 ±27% +71.7% 0.18 ±16% TOTAL turbostat.%c1
1129386 ± 9% +35.6% 1531413 ± 4% TOTAL meminfo.MemFree
1128767 ± 9% +35.5% 1529806 ± 4% TOTAL vmstat.memory.free
282835 ± 9% +35.3% 382773 ± 4% TOTAL proc-vmstat.nr_free_pages
740 ±12% +46.3% 1083 ±13% TOTAL cpuidle.C1E-SNB.usage
891706 ± 8% -24.9% 669997 ± 1% TOTAL proc-vmstat.pgactivate
1528 ± 6% -24.7% 1151 ± 1% TOTAL proc-vmstat.nr_writeback
327 ±16% +33.5% 437 ±10% TOTAL cpuidle.C1-SNB.usage
6074 ± 8% -24.6% 4581 ± 2% TOTAL meminfo.Writeback
13104 ± 4% -17.6% 10794 ± 3% TOTAL slabinfo.buffer_head.num_slabs
13104 ± 4% -17.6% 10794 ± 3% TOTAL
slabinfo.buffer_head.active_slabs
511069 ± 4% -17.6% 421003 ± 3% TOTAL slabinfo.buffer_head.num_objs
510881 ± 4% -17.6% 421000 ± 3% TOTAL
slabinfo.buffer_head.active_objs
3500553 ± 2% -20.3% 2788421 ± 3% TOTAL proc-vmstat.pgpgout
1722412 ± 3% -16.4% 1439377 ± 3% TOTAL meminfo.Active(file)
1752356 ± 3% -16.2% 1468171 ± 3% TOTAL meminfo.Active
430248 ± 3% -16.3% 359905 ± 3% TOTAL proc-vmstat.nr_active_file
767908 ± 2% -19.2% 620130 ± 1% TOTAL proc-vmstat.nr_written
97504 ± 4% -15.5% 82412 ± 3% TOTAL
slabinfo.ext4_inode_cache.active_objs
97544 ± 4% -15.5% 82457 ± 3% TOTAL
slabinfo.ext4_inode_cache.num_objs
6096 ± 4% -15.5% 5153 ± 3% TOTAL
slabinfo.ext4_inode_cache.num_slabs
6096 ± 4% -15.5% 5153 ± 3% TOTAL
slabinfo.ext4_inode_cache.active_slabs
963 ± 4% -15.2% 816 ± 3% TOTAL
slabinfo.ext4_extent_status.num_slabs
963 ± 4% -15.2% 816 ± 3% TOTAL
slabinfo.ext4_extent_status.active_slabs
98282 ± 4% -15.2% 83303 ± 3% TOTAL
slabinfo.ext4_extent_status.num_objs
100050 ± 4% -14.8% 85198 ± 3% TOTAL
slabinfo.shared_policy_node.active_objs
100058 ± 4% -14.8% 85218 ± 3% TOTAL
slabinfo.shared_policy_node.num_objs
2435104 ± 3% -14.7% 2077577 ± 2% TOTAL meminfo.Cached
1176 ± 4% -14.8% 1002 ± 3% TOTAL
slabinfo.shared_policy_node.active_slabs
1176 ± 4% -14.8% 1002 ± 3% TOTAL
slabinfo.shared_policy_node.num_slabs
2435823 ± 3% -14.6% 2079169 ± 2% TOTAL vmstat.memory.cache
616019 ± 3% -14.6% 526020 ± 2% TOTAL proc-vmstat.nr_file_pages
3342 ± 4% -14.7% 2852 ± 3% TOTAL
slabinfo.radix_tree_node.active_slabs
3342 ± 4% -14.7% 2852 ± 3% TOTAL
slabinfo.radix_tree_node.num_slabs
93612 ± 4% -14.7% 79877 ± 3% TOTAL
slabinfo.radix_tree_node.num_objs
93574 ± 4% -14.7% 79836 ± 3% TOTAL
slabinfo.radix_tree_node.active_objs
30729 ± 4% -14.9% 26163 ± 3% TOTAL meminfo.Buffers
253276 ± 3% -14.5% 216563 ± 3% TOTAL meminfo.SReclaimable
30737 ± 4% -14.8% 26187 ± 3% TOTAL vmstat.memory.buff
97430 ± 3% -14.5% 83280 ± 3% TOTAL
slabinfo.ext4_extent_status.active_objs
63268 ± 3% -14.4% 54149 ± 3% TOTAL
proc-vmstat.nr_slab_reclaimable
287129 ± 3% -13.6% 248074 ± 2% TOTAL meminfo.Slab
141193 ± 3% -12.2% 124025 ± 2% TOTAL slabinfo.dentry.num_objs
6723 ± 3% -12.2% 5905 ± 2% TOTAL slabinfo.dentry.active_slabs
6723 ± 3% -12.2% 5905 ± 2% TOTAL slabinfo.dentry.num_slabs
141096 ± 3% -12.2% 123952 ± 2% TOTAL slabinfo.dentry.active_objs
129818 ± 3% -11.6% 114766 ± 2% TOTAL slabinfo.Acpi-State.num_objs
2544 ± 3% -11.6% 2249 ± 2% TOTAL
slabinfo.Acpi-State.active_slabs
2544 ± 3% -11.6% 2249 ± 2% TOTAL slabinfo.Acpi-State.num_slabs
129753 ± 3% -11.6% 114696 ± 2% TOTAL
slabinfo.Acpi-State.active_objs
969880 ± 1% -14.1% 832982 ± 1% TOTAL proc-vmstat.nr_dirtied
37692 ± 1% +13.3% 42704 ± 1% TOTAL softirqs.BLOCK
726033 ± 3% -9.0% 660369 ± 3% TOTAL meminfo.Inactive(file)
729347 ± 3% -9.0% 663672 ± 3% TOTAL meminfo.Inactive
181422 ± 3% -9.0% 165116 ± 3% TOTAL proc-vmstat.nr_inactive_file
11481 ± 2% -20.6% 9116 ± 2% TOTAL iostat.sda.wkB/s
11499 ± 2% -20.6% 9128 ± 3% TOTAL vmstat.io.bo
7626315 ± 1% -17.3% 6309955 ± 1% TOTAL time.file_system_outputs
232 ± 1% +13.7% 264 ± 1% TOTAL iostat.sda.w/s
652 ± 1% -9.7% 589 ± 1% TOTAL iostat.sda.wrqm/s
31532 ± 2% -9.5% 28546 ± 1% TOTAL
time.voluntary_context_switches
562 ± 3% -8.1% 516 ± 2% TOTAL iostat.sda.await
562 ± 3% -8.1% 516 ± 2% TOTAL iostat.sda.w_await
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Fengguang
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
mkfs -t ext4 -q /dev/sda2
mount -t ext4 /dev/sda2 /fs/sda2
./blogbench -d /fs/sda2
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