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Date: Sun, 20 Nov 2022 21:19:14 +0800
From: kernel test robot <yujie.liu@...el.com>
To: Max Kellermann <mk@...all.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<ying.huang@...el.com>, <feng.tang@...el.com>,
<zhengjun.xing@...ux.intel.com>, <fengwei.yin@...el.com>,
<viro@...iv.linux.org.uk>,
Max Kellermann <max.kellermann@...os.com>
Subject: Re: [PATCH] fs/splice: don't block splice_direct_to_actor() after
data was read
Greeting,
FYI, we noticed a 3388.6% improvement of phoronix-test-suite.stress-ng.SENDFILE.bogo_ops_s due to commit:
commit: 86f00c46806e19ccce7fa238fbf3aaf0f1f2f531 ("[PATCH] fs/splice: don't block splice_direct_to_actor() after data was read")
url: https://github.com/intel-lab-lkp/linux/commits/Max-Kellermann/fs-splice-don-t-block-splice_direct_to_actor-after-data-was-read/20221105-171212
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git b208b9fbbcba743fb269d15cb46a4036b01936b1
patch link: https://lore.kernel.org/all/20221105090421.21237-1-mk@cm4all.com/
patch subject: [PATCH] fs/splice: don't block splice_direct_to_actor() after data was read
in testcase: phoronix-test-suite
on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory
with following parameters:
test: stress-ng-1.3.1
option_a: SENDFILE
cpufreq_governor: performance
test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added.
test-url: http://www.phoronix-test-suite.com/
Details are as below:
=========================================================================================
compiler/cpufreq_governor/kconfig/option_a/rootfs/tbox_group/test/testcase:
gcc-11/performance/x86_64-rhel-8.3/SENDFILE/debian-x86_64-phoronix/lkp-csl-2sp7/stress-ng-1.3.1/phoronix-test-suite
commit:
b208b9fbbc ("Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux")
86f00c4680 ("fs/splice: don't block splice_direct_to_actor() after data was read")
b208b9fbbcba743f 86f00c46806e19ccce7fa238fbf
---------------- ---------------------------
%stddev %change %stddev
\ | \
105881 ± 10% +3388.6% 3693772 ± 13% phoronix-test-suite.stress-ng.SENDFILE.bogo_ops_s
2.16 ± 7% +1117.6% 26.36 ± 13% phoronix-test-suite.time.user_time
0.20 +0.2 0.40 ± 4% mpstat.cpu.all.usr%
97.92 ± 6% +14.9% 112.48 ± 5% sched_debug.cfs_rq:/.util_est_enqueued.stddev
2717 +2.5% 2783 turbostat.Bzy_MHz
254.74 -4.6% 243.11 turbostat.PkgWatt
2589095 ± 18% -37.5% 1617492 ± 28% numa-meminfo.node0.FilePages
788063 ± 62% +123.2% 1758697 ± 26% numa-meminfo.node1.FilePages
992948 ± 48% +92.6% 1912574 ± 24% numa-meminfo.node1.Inactive
1803548 ± 28% +52.3% 2746365 ± 17% numa-meminfo.node1.MemUsed
4.443e+09 ± 12% -36.0% 2.846e+09 ± 18% numa-numastat.node0.local_node
4.429e+09 ± 12% -35.8% 2.842e+09 ± 18% numa-numastat.node0.numa_hit
5.558e+09 ± 8% -54.2% 2.548e+09 ± 24% numa-numastat.node1.local_node
5.539e+09 ± 8% -54.0% 2.545e+09 ± 24% numa-numastat.node1.numa_hit
9.968e+09 ± 10% -46.0% 5.388e+09 ± 13% proc-vmstat.numa_hit
1e+10 ± 10% -46.1% 5.393e+09 ± 13% proc-vmstat.numa_local
9.759e+09 ± 10% -45.5% 5.32e+09 ± 13% proc-vmstat.pgalloc_normal
9.759e+09 ± 10% -45.5% 5.32e+09 ± 13% proc-vmstat.pgfree
647020 ± 19% -37.5% 404382 ± 28% numa-vmstat.node0.nr_file_pages
4.429e+09 ± 12% -35.8% 2.842e+09 ± 18% numa-vmstat.node0.numa_hit
4.443e+09 ± 12% -36.0% 2.846e+09 ± 18% numa-vmstat.node0.numa_local
196897 ± 62% +123.3% 439599 ± 26% numa-vmstat.node1.nr_file_pages
5.539e+09 ± 8% -54.0% 2.545e+09 ± 24% numa-vmstat.node1.numa_hit
5.558e+09 ± 8% -54.2% 2.548e+09 ± 24% numa-vmstat.node1.numa_local
2.602e+10 ± 10% -39.6% 1.573e+10 ± 13% perf-stat.i.branch-instructions
24921395 ± 12% +40.0% 34894184 ± 6% perf-stat.i.branch-misses
1.223e+08 ± 11% -37.8% 76029198 ± 13% perf-stat.i.cache-references
1.92 ± 18% +43.1% 2.75 ± 12% perf-stat.i.cpi
2.05e+11 +2.6% 2.103e+11 perf-stat.i.cpu-cycles
3.522e+10 ± 10% -37.8% 2.192e+10 ± 13% perf-stat.i.dTLB-loads
2.356e+10 ± 10% -40.7% 1.396e+10 ± 13% perf-stat.i.dTLB-stores
2507922 ± 14% +527.4% 15734908 ± 8% perf-stat.i.iTLB-load-misses
1.336e+11 ± 10% -39.6% 8.071e+10 ± 13% perf-stat.i.instructions
50055 ± 12% -90.8% 4589 ± 5% perf-stat.i.instructions-per-iTLB-miss
0.61 ± 10% -35.9% 0.39 ± 10% perf-stat.i.ipc
2135130 +2.7% 2191818 perf-stat.i.metric.GHz
8.845e+08 ± 10% -39.1% 5.387e+08 ± 13% perf-stat.i.metric.M/sec
60647 ± 2% -19.8% 48635 ± 6% perf-stat.i.node-stores
0.10 ± 8% +0.1 0.22 ± 7% perf-stat.overall.branch-miss-rate%
11.06 ± 35% +5.9 16.96 ± 25% perf-stat.overall.cache-miss-rate%
1.55 ± 12% +70.3% 2.65 ± 11% perf-stat.overall.cpi
0.00 ± 41% +0.0 0.00 ± 29% perf-stat.overall.dTLB-store-miss-rate%
86.38 ± 3% +10.8 97.16 perf-stat.overall.iTLB-load-miss-rate%
53972 ± 12% -90.5% 5111 ± 5% perf-stat.overall.instructions-per-iTLB-miss
0.65 ± 11% -41.2% 0.38 ± 12% perf-stat.overall.ipc
2.579e+10 ± 10% -39.5% 1.559e+10 ± 13% perf-stat.ps.branch-instructions
24705183 ± 12% +40.1% 34602922 ± 6% perf-stat.ps.branch-misses
1.212e+08 ± 11% -37.8% 75385416 ± 13% perf-stat.ps.cache-references
2.032e+11 +2.6% 2.085e+11 perf-stat.ps.cpu-cycles
3.491e+10 ± 10% -37.7% 2.173e+10 ± 13% perf-stat.ps.dTLB-loads
2.335e+10 ± 10% -40.7% 1.385e+10 ± 13% perf-stat.ps.dTLB-stores
2486067 ± 14% +527.6% 15601840 ± 8% perf-stat.ps.iTLB-load-misses
1.324e+11 ± 10% -39.5% 8.002e+10 ± 13% perf-stat.ps.instructions
60175 ± 2% -19.8% 48272 ± 6% perf-stat.ps.node-stores
1.529e+13 ± 10% -39.5% 9.254e+12 ± 12% perf-stat.total.instructions
55.97 ± 6% -13.5 42.46 ± 4% perf-profile.calltrace.cycles-pp.do_iter_readv_writev.do_iter_read.ovl_read_iter.generic_file_splice_read.splice_direct_to_actor
55.59 ± 6% -13.4 42.15 ± 4% perf-profile.calltrace.cycles-pp.shmem_file_read_iter.do_iter_readv_writev.do_iter_read.ovl_read_iter.generic_file_splice_read
29.58 ± 11% -12.7 16.90 ± 12% perf-profile.calltrace.cycles-pp.iov_iter_zero.shmem_file_read_iter.do_iter_readv_writev.do_iter_read.ovl_read_iter
57.68 ± 3% -11.7 45.98 perf-profile.calltrace.cycles-pp.do_iter_read.ovl_read_iter.generic_file_splice_read.splice_direct_to_actor.do_splice_direct
17.32 ± 12% -7.4 9.89 ± 14% perf-profile.calltrace.cycles-pp.append_pipe.iov_iter_zero.shmem_file_read_iter.do_iter_readv_writev.do_iter_read
13.20 ± 12% -5.5 7.66 ± 15% perf-profile.calltrace.cycles-pp.__alloc_pages.append_pipe.iov_iter_zero.shmem_file_read_iter.do_iter_readv_writev
10.88 ± 11% -4.6 6.27 ± 9% perf-profile.calltrace.cycles-pp.memset_erms.iov_iter_zero.shmem_file_read_iter.do_iter_readv_writev.do_iter_read
15.34 ± 7% -4.3 11.02 ± 14% perf-profile.calltrace.cycles-pp.direct_splice_actor.splice_direct_to_actor.do_splice_direct.do_sendfile.__x64_sys_sendfile64
15.23 ± 7% -4.3 10.96 ± 14% perf-profile.calltrace.cycles-pp.splice_from_pipe.direct_splice_actor.splice_direct_to_actor.do_splice_direct.do_sendfile
15.05 ± 7% -4.2 10.86 ± 14% perf-profile.calltrace.cycles-pp.__splice_from_pipe.splice_from_pipe.direct_splice_actor.splice_direct_to_actor.do_splice_direct
8.26 ± 11% -3.2 5.06 ± 14% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages.append_pipe.iov_iter_zero.shmem_file_read_iter
8.38 ± 9% -2.4 6.01 ± 14% perf-profile.calltrace.cycles-pp.free_unref_page.__splice_from_pipe.splice_from_pipe.direct_splice_actor.splice_direct_to_actor
5.64 ± 10% -1.9 3.70 ± 13% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages.append_pipe.iov_iter_zero
99.74 -1.5 98.21 perf-profile.calltrace.cycles-pp.splice_direct_to_actor.do_splice_direct.do_sendfile.__x64_sys_sendfile64.do_syscall_64
99.75 -1.4 98.36 perf-profile.calltrace.cycles-pp.do_splice_direct.do_sendfile.__x64_sys_sendfile64.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.30 ± 13% -1.1 1.20 ± 16% perf-profile.calltrace.cycles-pp.alloc_pages.append_pipe.iov_iter_zero.shmem_file_read_iter.do_iter_readv_writev
1.74 ± 12% -0.8 0.96 ± 11% perf-profile.calltrace.cycles-pp.xas_load.__filemap_get_folio.shmem_get_folio_gfp.shmem_file_read_iter.do_iter_readv_writev
99.79 -0.8 99.03 perf-profile.calltrace.cycles-pp.do_sendfile.__x64_sys_sendfile64.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.52 ± 12% -0.7 0.79 ± 15% perf-profile.calltrace.cycles-pp.free_unref_page_commit.free_unref_page.__splice_from_pipe.splice_from_pipe.direct_splice_actor
4.13 ± 3% -0.7 3.46 ± 13% perf-profile.calltrace.cycles-pp.generic_pipe_buf_release.__splice_from_pipe.splice_from_pipe.direct_splice_actor.splice_direct_to_actor
1.01 ± 11% -0.6 0.40 ± 72% perf-profile.calltrace.cycles-pp.free_pcp_prepare.free_unref_page.__splice_from_pipe.splice_from_pipe.direct_splice_actor
99.80 -0.4 99.36 perf-profile.calltrace.cycles-pp.__x64_sys_sendfile64.do_syscall_64.entry_SYSCALL_64_after_hwframe
99.82 -0.4 99.47 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.79 ± 10% -0.3 0.48 ± 45% perf-profile.calltrace.cycles-pp.__list_del_entry_valid.rmqueue.get_page_from_freelist.__alloc_pages.append_pipe
0.90 ± 7% -0.3 0.59 ± 4% perf-profile.calltrace.cycles-pp.__might_resched.shmem_file_read_iter.do_iter_readv_writev.do_iter_read.ovl_read_iter
99.83 -0.3 99.52 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
83.75 +2.5 86.27 ± 2% perf-profile.calltrace.cycles-pp.generic_file_splice_read.splice_direct_to_actor.do_splice_direct.do_sendfile.__x64_sys_sendfile64
83.42 +2.5 85.97 ± 2% perf-profile.calltrace.cycles-pp.ovl_read_iter.generic_file_splice_read.splice_direct_to_actor.do_splice_direct.do_sendfile
11.81 ± 13% +6.4 18.22 perf-profile.calltrace.cycles-pp.override_creds.ovl_read_iter.generic_file_splice_read.splice_direct_to_actor.do_splice_direct
13.34 ± 14% +7.7 21.02 ± 7% perf-profile.calltrace.cycles-pp.revert_creds.ovl_read_iter.generic_file_splice_read.splice_direct_to_actor.do_splice_direct
55.98 ± 6% -13.5 42.46 ± 4% perf-profile.children.cycles-pp.do_iter_readv_writev
55.85 ± 6% -13.5 42.34 ± 4% perf-profile.children.cycles-pp.shmem_file_read_iter
29.70 ± 11% -12.7 16.96 ± 12% perf-profile.children.cycles-pp.iov_iter_zero
57.69 ± 3% -11.7 45.98 perf-profile.children.cycles-pp.do_iter_read
17.38 ± 12% -7.5 9.93 ± 14% perf-profile.children.cycles-pp.append_pipe
13.64 ± 12% -5.7 7.90 ± 15% perf-profile.children.cycles-pp.__alloc_pages
10.94 ± 10% -4.6 6.30 ± 9% perf-profile.children.cycles-pp.memset_erms
15.34 ± 7% -4.3 11.02 ± 14% perf-profile.children.cycles-pp.direct_splice_actor
15.24 ± 7% -4.3 10.96 ± 14% perf-profile.children.cycles-pp.splice_from_pipe
15.13 ± 7% -4.2 10.90 ± 14% perf-profile.children.cycles-pp.__splice_from_pipe
8.36 ± 11% -3.2 5.11 ± 14% perf-profile.children.cycles-pp.get_page_from_freelist
8.62 ± 9% -2.5 6.13 ± 14% perf-profile.children.cycles-pp.free_unref_page
5.76 ± 10% -2.0 3.76 ± 13% perf-profile.children.cycles-pp.rmqueue
99.74 -1.5 98.22 perf-profile.children.cycles-pp.splice_direct_to_actor
99.75 -1.4 98.36 perf-profile.children.cycles-pp.do_splice_direct
2.39 ± 13% -1.1 1.24 ± 16% perf-profile.children.cycles-pp.alloc_pages
2.63 ± 9% -1.0 1.65 ± 8% perf-profile.children.cycles-pp.__might_resched
1.84 ± 12% -0.8 1.02 ± 12% perf-profile.children.cycles-pp.xas_load
1.61 ± 12% -0.8 0.84 ± 14% perf-profile.children.cycles-pp.free_unref_page_commit
99.79 -0.7 99.04 perf-profile.children.cycles-pp.do_sendfile
4.18 ± 3% -0.7 3.49 ± 13% perf-profile.children.cycles-pp.generic_pipe_buf_release
1.42 ± 11% -0.6 0.80 ± 8% perf-profile.children.cycles-pp.__cond_resched
1.06 ± 11% -0.5 0.59 ± 14% perf-profile.children.cycles-pp.free_pcp_prepare
0.94 ± 14% -0.4 0.50 ± 15% perf-profile.children.cycles-pp.__might_sleep
99.80 -0.4 99.37 perf-profile.children.cycles-pp.__x64_sys_sendfile64
0.75 ± 15% -0.4 0.38 ± 16% perf-profile.children.cycles-pp.policy_node
0.79 ± 12% -0.4 0.42 ± 15% perf-profile.children.cycles-pp.__folio_put
0.90 ± 10% -0.4 0.54 ± 12% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
99.95 -0.3 99.64 perf-profile.children.cycles-pp.do_syscall_64
99.95 -0.3 99.68 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
0.58 ± 12% -0.3 0.31 ± 10% perf-profile.children.cycles-pp.rcu_all_qs
0.62 ± 14% -0.3 0.36 ± 12% perf-profile.children.cycles-pp.xas_start
0.80 ± 10% -0.2 0.56 ± 10% perf-profile.children.cycles-pp.__list_del_entry_valid
0.40 ± 17% -0.2 0.20 ± 17% perf-profile.children.cycles-pp._find_first_bit
0.32 ± 14% -0.2 0.16 ± 17% perf-profile.children.cycles-pp.__list_add_valid
0.34 ± 12% -0.1 0.20 ± 8% perf-profile.children.cycles-pp.sanity
0.32 ± 11% -0.1 0.18 ± 14% perf-profile.children.cycles-pp.__page_cache_release
0.27 ± 12% -0.1 0.14 ± 15% perf-profile.children.cycles-pp.should_fail_alloc_page
0.25 ± 12% -0.1 0.13 ± 17% perf-profile.children.cycles-pp.__mem_cgroup_uncharge
0.20 ± 14% -0.1 0.10 ± 13% perf-profile.children.cycles-pp.policy_nodemask
0.12 ± 15% -0.0 0.07 ± 12% perf-profile.children.cycles-pp.pipe_to_null
0.04 ± 45% +0.0 0.07 perf-profile.children.cycles-pp.__libc_write
0.05 ± 7% +0.0 0.08 ± 11% perf-profile.children.cycles-pp.ktime_get_coarse_real_ts64
0.04 ± 71% +0.0 0.07 perf-profile.children.cycles-pp.generic_file_write_iter
0.04 ± 71% +0.0 0.07 ± 5% perf-profile.children.cycles-pp.generic_perform_write
0.04 ± 71% +0.0 0.07 perf-profile.children.cycles-pp.__generic_file_write_iter
0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.00 +0.1 0.06 ± 11% perf-profile.children.cycles-pp.ovl_d_real
0.00 +0.1 0.07 ± 14% perf-profile.children.cycles-pp.__put_user_nocheck_8
0.16 ± 6% +0.1 0.23 ± 2% perf-profile.children.cycles-pp.current_time
0.00 +0.1 0.08 ± 14% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
0.28 ± 8% +0.1 0.37 ± 4% perf-profile.children.cycles-pp.atime_needs_update
0.09 ± 14% +0.1 0.18 ± 15% perf-profile.children.cycles-pp.__fsnotify_parent
0.35 ± 9% +0.1 0.45 ± 6% perf-profile.children.cycles-pp.touch_atime
0.00 +0.1 0.12 ± 12% perf-profile.children.cycles-pp.__might_fault
0.00 +0.1 0.14 ± 14% perf-profile.children.cycles-pp._copy_from_user
0.00 +0.1 0.14 ± 4% perf-profile.children.cycles-pp.__entry_text_start
0.00 +0.2 0.16 ± 19% perf-profile.children.cycles-pp.__fdget
83.76 +2.5 86.28 ± 2% perf-profile.children.cycles-pp.generic_file_splice_read
83.44 +2.5 85.99 ± 2% perf-profile.children.cycles-pp.ovl_read_iter
11.82 ± 13% +6.4 18.26 perf-profile.children.cycles-pp.override_creds
13.35 ± 14% +7.7 21.06 ± 7% perf-profile.children.cycles-pp.revert_creds
10.81 ± 10% -4.6 6.23 ± 9% perf-profile.self.cycles-pp.memset_erms
3.26 ± 13% -1.5 1.74 ± 17% perf-profile.self.cycles-pp.__alloc_pages
3.02 ± 12% -1.4 1.64 ± 14% perf-profile.self.cycles-pp.free_unref_page
2.96 ± 12% -1.4 1.60 ± 14% perf-profile.self.cycles-pp.rmqueue
2.52 ± 13% -1.2 1.30 ± 16% perf-profile.self.cycles-pp.get_page_from_freelist
2.58 ± 9% -1.0 1.62 ± 8% perf-profile.self.cycles-pp.__might_resched
1.46 ± 13% -0.7 0.78 ± 18% perf-profile.self.cycles-pp.alloc_pages
4.11 ± 3% -0.7 3.44 ± 13% perf-profile.self.cycles-pp.generic_pipe_buf_release
1.40 ± 13% -0.6 0.77 ± 15% perf-profile.self.cycles-pp.__splice_from_pipe
1.29 ± 12% -0.6 0.68 ± 14% perf-profile.self.cycles-pp.free_unref_page_commit
1.37 ± 10% -0.6 0.79 ± 9% perf-profile.self.cycles-pp.append_pipe
1.21 ± 12% -0.5 0.67 ± 11% perf-profile.self.cycles-pp.xas_load
1.02 ± 12% -0.5 0.54 ± 14% perf-profile.self.cycles-pp.iov_iter_zero
1.54 ± 8% -0.5 1.08 ± 3% perf-profile.self.cycles-pp.shmem_file_read_iter
0.99 ± 11% -0.4 0.55 ± 14% perf-profile.self.cycles-pp.free_pcp_prepare
0.80 ± 13% -0.4 0.43 ± 15% perf-profile.self.cycles-pp.__might_sleep
0.82 ± 9% -0.3 0.49 ± 5% perf-profile.self.cycles-pp.__cond_resched
0.78 ± 10% -0.3 0.46 ± 12% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
0.56 ± 13% -0.2 0.32 ± 12% perf-profile.self.cycles-pp.xas_start
0.75 ± 10% -0.2 0.54 ± 11% perf-profile.self.cycles-pp.__list_del_entry_valid
0.44 ± 13% -0.2 0.23 ± 13% perf-profile.self.cycles-pp.rcu_all_qs
0.34 ± 16% -0.2 0.17 ± 17% perf-profile.self.cycles-pp._find_first_bit
0.36 ± 15% -0.2 0.18 ± 16% perf-profile.self.cycles-pp.policy_node
0.32 ± 12% -0.2 0.17 ± 15% perf-profile.self.cycles-pp.__page_cache_release
0.34 ± 12% -0.1 0.19 ± 8% perf-profile.self.cycles-pp.sanity
0.28 ± 14% -0.1 0.14 ± 19% perf-profile.self.cycles-pp.__list_add_valid
0.24 ± 13% -0.1 0.12 ± 15% perf-profile.self.cycles-pp.__mem_cgroup_uncharge
0.18 ± 14% -0.1 0.10 ± 14% perf-profile.self.cycles-pp.__folio_put
0.16 ± 12% -0.1 0.08 ± 12% perf-profile.self.cycles-pp.policy_nodemask
0.12 ± 9% -0.1 0.06 ± 17% perf-profile.self.cycles-pp.should_fail_alloc_page
0.10 ± 13% -0.0 0.06 ± 13% perf-profile.self.cycles-pp.direct_splice_actor
0.10 ± 14% -0.0 0.06 ± 16% perf-profile.self.cycles-pp.splice_from_pipe
0.09 ± 14% -0.0 0.06 ± 14% perf-profile.self.cycles-pp.pipe_to_null
0.10 ± 10% +0.0 0.14 ± 6% perf-profile.self.cycles-pp.current_time
0.03 ± 70% +0.0 0.08 ± 12% perf-profile.self.cycles-pp.ktime_get_coarse_real_ts64
0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.07 ± 15% +0.1 0.13 ± 10% perf-profile.self.cycles-pp.generic_file_splice_read
0.00 +0.1 0.06 ± 11% perf-profile.self.cycles-pp.ovl_d_real
0.00 +0.1 0.07 ± 16% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
0.00 +0.1 0.07 ± 14% perf-profile.self.cycles-pp.__put_user_nocheck_8
0.09 ± 14% +0.1 0.18 ± 15% perf-profile.self.cycles-pp.__fsnotify_parent
0.00 +0.1 0.14 ± 4% perf-profile.self.cycles-pp.__entry_text_start
0.00 +0.2 0.15 ± 20% perf-profile.self.cycles-pp.__fdget
0.11 ± 14% +0.2 0.30 ± 14% perf-profile.self.cycles-pp.splice_direct_to_actor
0.00 +0.2 0.24 ± 11% perf-profile.self.cycles-pp.do_sendfile
11.40 ± 4% +1.8 13.16 ± 3% perf-profile.self.cycles-pp.__filemap_get_folio
11.73 ± 13% +6.4 18.12 perf-profile.self.cycles-pp.override_creds
13.25 ± 14% +7.6 20.88 ± 7% perf-profile.self.cycles-pp.revert_creds
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
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.
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config-6.1.0-rc3-00289-g86f00c46806e" of type "text/plain" (166032 bytes)
View attachment "job-script" of type "text/plain" (7746 bytes)
View attachment "job.yaml" of type "text/plain" (4848 bytes)
View attachment "reproduce" of type "text/plain" (301 bytes)
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