test0r
70a01bd41a
Captured stock kwin 6.6.4 ioctl baselines on ohm (PineTab2 / RK3566 / mainline 6.19.10 / Plasma 6.6.4 Wayland): - Brave + bbb 1080p30 (sw decode), 60 s: 96,120 ioctls, 0 EXPORT_SYNC_FILE - chromium-fourier + bbb 1080p30, 30 s: 29,128 ioctls, 0 EXPORT_SYNC_FILE, ~7,800 SYNCOBJ_* (explicit sync) Finding: KWin 6.6.4 + drm-syncobj-aware clients negotiate wp_linux_drm_syncobj_v1 explicit sync, leaving Transaction::watchDmaBuf on the legacy implicit-sync path that fires only for clients that don't advertise drm-syncobj support. Updated kde-mr-body.md to reflect honest scope: structural cleanup of the legacy path (still relevant for older clients / V4L2 pipelines that don't wrap dmabufs in syncobjs) rather than the originally- hypothesized per-frame ioctl reduction. Patch is correct by construction; no regression on the no-targeted-path workload. Evidence files saved under measurements/. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
30 lines
1.5 KiB
Plaintext
30 lines
1.5 KiB
Plaintext
strace: Process 3891 attached with 6 threads
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strace: Process 3891 detached
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strace: Process 3931 detached
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strace: Process 3941 detached
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strace: Process 3932 detached
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strace: Process 3930 detached
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strace: Process 3928 detached
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% time seconds usecs/call calls errors syscall
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------ ----------- ----------- --------- --------- ----------------
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44.28 8.740874 801 10908 ppoll
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35.51 7.011272 1221 5740 459 futex
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8.65 1.708574 17 96120 ioctl
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3.41 0.673061 427 1576 clock_nanosleep
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2.57 0.506512 48 10361 mmap
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1.94 0.383496 37 10358 munmap
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1.08 0.212343 16 13241 close
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0.73 0.145039 42 3426 sendmsg
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0.59 0.116589 7 16232 getpid
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0.31 0.061258 18 3337 173 read
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0.28 0.055864 19 2888 1444 recvmsg
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0.23 0.045432 10 4428 fcntl
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0.19 0.037662 24 1514 write
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0.15 0.029347 16 1749 epoll_pwait
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0.06 0.011514 8 1432 dup
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0.01 0.002820 2820 1 restart_syscall
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0.00 0.000272 34 8 timerfd_settime
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0.00 0.000054 27 2 sysinfo
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------ ----------- ----------- --------- --------- ----------------
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100.00 19.741983 107 183321 2076 total
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