Re: [PATCH v5 02/27] mm, cma: support multiple contiguous ranges, if requested
From: kernel test robot
Date: Wed Mar 05 2025 - 01:29:53 EST
Hello,
kernel test robot noticed a 15.1% improvement of netperf.Throughput_tps on:
commit: a957f140831b0d42e4fdbe83cf93997ef1b51bda ("[PATCH v5 02/27] mm, cma: support multiple contiguous ranges, if requested")
url: https://github.com/intel-lab-lkp/linux/commits/Frank-van-der-Linden/mm-cma-export-total-and-free-number-of-pages-for-CMA-areas/20250301-023339
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 276f98efb64a2c31c099465ace78d3054c662a0f
patch link: https://lore.kernel.org/all/20250228182928.2645936-3-fvdl@xxxxxxxxxx/
patch subject: [PATCH v5 02/27] mm, cma: support multiple contiguous ranges, if requested
testcase: netperf
config: x86_64-rhel-9.4
compiler: gcc-12
test machine: 128 threads 2 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory
parameters:
ip: ipv4
runtime: 300s
nr_threads: 200%
cluster: cs-localhost
test: TCP_CRR
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250305/202503051327.e87dce82-lkp@xxxxxxxxx
=========================================================================================
cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase:
cs-localhost/gcc-12/performance/ipv4/x86_64-rhel-9.4/200%/debian-12-x86_64-20240206.cgz/300s/lkp-icl-2sp2/TCP_CRR/netperf
commit:
cdc31e6532 ("mm/cma: export total and free number of pages for CMA areas")
a957f14083 ("mm, cma: support multiple contiguous ranges, if requested")
cdc31e65328522c6 a957f140831b0d42e4fdbe83cf9
---------------- ---------------------------
%stddev %change %stddev
\ | \
2.43 +0.5 2.90 ± 4% mpstat.cpu.all.usr%
4718850 +15.4% 5446771 vmstat.system.cs
62006 ± 43% -59.6% 25067 ±137% numa-meminfo.node0.Mapped
2884295 ± 41% -59.4% 1171696 ±135% numa-meminfo.node0.Unevictable
28159 ± 2% -17.7% 23164 ± 2% perf-c2c.HITM.local
5426 ± 3% +28.5% 6973 ± 8% perf-c2c.HITM.remote
33586 ± 2% -10.3% 30137 ± 3% perf-c2c.HITM.total
5642375 ± 2% +15.5% 6519596 sched_debug.cpu.nr_switches.avg
7473763 ± 4% +18.0% 8815709 ± 2% sched_debug.cpu.nr_switches.max
4352931 ± 3% +12.7% 4906391 ± 2% sched_debug.cpu.nr_switches.min
2485115 ± 6% +31.9% 3277456 ± 11% numa-numastat.node0.local_node
2526446 ± 6% +32.8% 3356120 ± 11% numa-numastat.node0.numa_hit
3522582 ± 10% +28.7% 4535065 ± 23% numa-numastat.node1.local_node
3613797 ± 10% +27.0% 4588978 ± 22% numa-numastat.node1.numa_hit
40617 +5.4% 42811 ± 5% proc-vmstat.nr_slab_reclaimable
6144430 ± 4% +29.4% 7948120 ± 16% proc-vmstat.numa_hit
6011884 ± 4% +30.0% 7815542 ± 16% proc-vmstat.numa_local
26402145 ± 2% +40.6% 37129548 ± 14% proc-vmstat.pgalloc_normal
25226079 +42.1% 35834032 ± 13% proc-vmstat.pgfree
15712 ± 43% -59.6% 6348 ±137% numa-vmstat.node0.nr_mapped
721073 ± 41% -59.4% 292924 ±135% numa-vmstat.node0.nr_unevictable
721073 ± 41% -59.4% 292924 ±135% numa-vmstat.node0.nr_zone_unevictable
2526848 ± 6% +32.8% 3355902 ± 11% numa-vmstat.node0.numa_hit
2485517 ± 6% +31.9% 3277238 ± 11% numa-vmstat.node0.numa_local
3614259 ± 10% +27.0% 4589442 ± 22% numa-vmstat.node1.numa_hit
3523043 ± 10% +28.7% 4535533 ± 23% numa-vmstat.node1.numa_local
1711802 +15.1% 1969470 netperf.ThroughputBoth_total_tps
6686 +15.1% 7693 netperf.ThroughputBoth_tps
1711802 +15.1% 1969470 netperf.Throughput_total_tps
6686 +15.1% 7693 netperf.Throughput_tps
4.052e+08 ± 5% +16.7% 4.728e+08 ± 4% netperf.time.involuntary_context_switches
535.88 +18.1% 633.12 netperf.time.user_time
3.175e+08 ± 3% +13.9% 3.615e+08 ± 3% netperf.time.voluntary_context_switches
5.135e+08 +15.1% 5.908e+08 netperf.workload
0.07 ± 8% -31.3% 0.05 ± 23% perf-sched.sch_delay.avg.ms.__cond_resched.kmem_cache_alloc_node_noprof.kmalloc_reserve.__alloc_skb.tcp_stream_alloc_skb
0.46 ±114% -71.4% 0.13 ± 34% perf-sched.sch_delay.max.ms.__cond_resched.lock_sock_nested.__inet_stream_connect.inet_stream_connect.__sys_connect
5.70 ± 90% +2752.3% 162.72 ±202% perf-sched.wait_and_delay.avg.ms.devkmsg_read.vfs_read.ksys_read.do_syscall_64
33.94 ± 19% +50.3% 50.99 ± 18% perf-sched.wait_and_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
30764 ± 22% -32.1% 20881 ± 22% perf-sched.wait_and_delay.count.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
7.03 ± 60% +11736.2% 832.16 ±150% perf-sched.wait_and_delay.max.ms.devkmsg_read.vfs_read.ksys_read.do_syscall_64
0.14 ± 8% -33.5% 0.09 ± 26% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_node_noprof.kmalloc_reserve.__alloc_skb.tcp_stream_alloc_skb
0.11 ± 8% -14.3% 0.10 ± 11% perf-sched.wait_time.avg.ms.__cond_resched.lock_sock_nested.inet_stream_connect.__sys_connect.__x64_sys_connect
33.61 ± 19% +50.4% 50.57 ± 18% perf-sched.wait_time.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
0.69 ±109% -59.0% 0.28 ± 27% perf-sched.wait_time.max.ms.__cond_resched.sk_wait_data.tcp_recvmsg_locked.tcp_recvmsg.inet_recvmsg
0.76 -39.9% 0.46 ± 12% perf-stat.i.MPKI
3.959e+10 +14.9% 4.55e+10 perf-stat.i.branch-instructions
0.92 -0.0 0.90 perf-stat.i.branch-miss-rate%
3.564e+08 +12.7% 4.017e+08 perf-stat.i.branch-misses
1.561e+08 -32.2% 1.058e+08 ± 12% perf-stat.i.cache-misses
6.91e+08 -33.8% 4.574e+08 ± 6% perf-stat.i.cache-references
4760614 +15.5% 5496803 perf-stat.i.context-switches
1.54 -13.5% 1.33 perf-stat.i.cpi
2048 +49.1% 3054 ± 9% perf-stat.i.cycles-between-cache-misses
2.084e+11 +14.9% 2.394e+11 perf-stat.i.instructions
0.65 +15.3% 0.75 perf-stat.i.ipc
37.20 +15.5% 42.97 perf-stat.i.metric.K/sec
0.75 -41.0% 0.44 ± 12% perf-stat.overall.MPKI
0.90 -0.0 0.88 perf-stat.overall.branch-miss-rate%
1.54 -13.6% 1.33 perf-stat.overall.cpi
2060 +48.5% 3060 ± 10% perf-stat.overall.cycles-between-cache-misses
0.65 +15.7% 0.75 perf-stat.overall.ipc
3.947e+10 +14.9% 4.536e+10 perf-stat.ps.branch-instructions
3.553e+08 +12.7% 4.005e+08 perf-stat.ps.branch-misses
1.557e+08 -32.2% 1.055e+08 ± 12% perf-stat.ps.cache-misses
6.889e+08 -33.8% 4.56e+08 ± 6% perf-stat.ps.cache-references
4746041 +15.5% 5479885 perf-stat.ps.context-switches
2.078e+11 +14.9% 2.387e+11 perf-stat.ps.instructions
6.363e+13 +14.9% 7.312e+13 perf-stat.total.instructions
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://github.com/intel/lkp-tests/wiki