Messages in this thread | | | Subject | Re: [PATCH v8 2/2] sched/fair: Introduce SIS_CURRENT to wake up short task on current CPU | From | Mike Galbraith <> | Date | Mon, 01 May 2023 17:37:10 +0200 |
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On Mon, 2023-05-01 at 17:32 +0200, Mike Galbraith wrote: > On Mon, 2023-05-01 at 15:48 +0200, Peter Zijlstra wrote: > > > > Throughput 646.55 MB/sec 2 clients 2 procs max_latency=0.104 > > ms > > Throughput 1361.06 MB/sec 5 clients 5 procs max_latency=0.100 > > ms > > Throughput 1889.82 MB/sec 10 clients 10 procs max_latency=0.154 > > ms > > Throughput 2406.57 MB/sec 20 clients 20 procs max_latency=3.667 > > ms > > Throughput 2318.00 MB/sec 40 clients 40 procs max_latency=0.390 > > ms > > Throughput 2384.85 MB/sec 80 clients 80 procs max_latency=1.371 > > ms > > > > > > So what's going on here? I don't see anything exciting happening at > > the > > 40 mark. At the same time, I can't seem to reproduce Mike's latency > > pile > > up either :/ > > Are you running tbench in the GUI so the per second output stimulates > assorted goo? I'm using KDE fwtw. > > Caught this from my raspberry pi, tbench placement looks lovely, the > llvmpipe thingies otoh..
erm, without 14 feet of whitespace.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ P COMMAND 19109 git 20 0 23468 1920 1664 R 52.65 0.012 3:59.64 4 tbench 19110 git 20 0 23468 1664 1536 R 52.65 0.010 4:00.03 3 tbench 19104 git 20 0 23468 1664 1536 R 52.32 0.010 4:00.15 1 tbench 19105 git 20 0 23468 1664 1536 R 52.32 0.010 4:00.16 0 tbench 19108 git 20 0 23468 1792 1664 R 52.32 0.011 4:00.12 7 tbench 19111 git 20 0 23468 1792 1664 R 51.99 0.011 4:00.33 5 tbench 19106 git 20 0 23468 1664 1536 R 51.66 0.010 3:59.40 6 tbench 19107 git 20 0 23468 1664 1536 R 51.32 0.010 3:59.72 2 tbench 19114 git 20 0 6748 896 768 R 46.69 0.006 3:32.77 6 tbench_srv 19116 git 20 0 6748 768 768 S 46.69 0.005 3:32.17 7 tbench_srv 19118 git 20 0 6748 768 768 S 46.69 0.005 3:31.70 3 tbench_srv 19117 git 20 0 6748 768 768 S 46.36 0.005 3:32.99 4 tbench_srv 19112 git 20 0 6748 768 768 S 46.03 0.005 3:32.51 1 tbench_srv 19113 git 20 0 6748 768 768 R 46.03 0.005 3:32.48 0 tbench_srv 19119 git 20 0 6748 768 768 S 46.03 0.005 3:31.93 5 tbench_srv 19115 git 20 0 6748 768 768 R 45.70 0.005 3:32.70 2 tbench_srv 2492 root 20 0 392608 110044 70276 S 1.987 0.682 8:06.86 3 X 2860 root 20 0 2557284 183260 138568 S 0.662 1.135 2:06.38 6 llvmpipe-1 2861 root 20 0 2557284 183260 138568 S 0.662 1.135 2:06.44 6 llvmpipe-2 2863 root 20 0 2557284 183260 138568 S 0.662 1.135 2:04.94 6 llvmpipe-4 2864 root 20 0 2557284 183260 138568 S 0.662 1.135 2:04.72 6 llvmpipe-5 2866 root 20 0 2557284 183260 138568 S 0.662 1.135 2:04.49 6 llvmpipe-7 19562 root 20 0 26192 4876 3596 R 0.662 0.030 0:00.43 5 top 2837 root 20 0 2557284 183260 138568 S 0.331 1.135 1:51.39 5 kwin_x11 2859 root 20 0 2557284 183260 138568 S 0.331 1.135 2:07.56 6 llvmpipe-0 2862 root 20 0 2557284 183260 138568 S 0.331 1.135 2:05.97 6 llvmpipe-3 2865 root 20 0 2557284 183260 138568 S 0.331 1.135 2:03.84 6 llvmpipe-6 2966 root 20 0 3829152 323000 174992 S 0.331 2.001 0:12.71 4 llvmpipe-7 2998 root 20 0 1126332 116960 78032 S 0.331 0.725 0:25.58 3 konsole
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