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2024-04-29 - 22:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot4s.osadl.org (updated Mon Apr 29, 2024 12:44:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2599039994841,5cyclictest2983262-21latency_hist12:05:010
2599047994033,4cyclictest2811936-21latency_hist10:10:002
2599039994036,3cyclictest2820788-21kworker/u8:3+flush-259:011:19:590
2599049993633,2cyclictest2887043-21kworker/u8:0+flush-259:011:40:143
2599042993633,2cyclictest2877660-21kworker/u8:2+events_unbound11:00:001
2599042993533,2cyclictest2887043-21kworker/u8:0+events_unbound11:10:151
2599039993430,3cyclictest74-21kswapd010:25:000
2599049993330,2cyclictest2968445-21kworker/u8:4+flush-259:011:55:203
2599039993330,2cyclictest2923401-21kworker/u8:1+events_unbound11:50:160
2599049993226,4cyclictest2842050-21latency_hist10:29:593
2599049993128,2cyclictest2826743-21kworker/u8:4+flush-259:010:40:163
2599047993126,3cyclictest2819613-21ssh10:15:012
2599047993026,3cyclictest2624248-21kworker/u8:1+flush-259:007:44:592
2599042993027,2cyclictest2968445-21kworker/u8:4+flush-259:012:25:011
2599042993027,2cyclictest2887043-21kworker/u8:0+flush-259:011:25:321
2599042993025,3cyclictest2864674-21cat10:45:011
2599049992924,3cyclictest2877660-21kworker/u8:2+flush-259:011:10:003
2599047992925,3cyclictest2990677-21latency_hist12:10:012
2599047992923,4cyclictest2872171-21latency_hist10:50:012
2599049992720,5cyclictest2686832-21kworker/u8:2+flush-259:009:20:003
2599039992723,3cyclictest2774927-21kworker/u8:2+flush-259:010:10:140
2599049992623,2cyclictest74-21kswapd011:15:153
2599047992621,3cyclictest2655614-21/usr/sbin/munin08:05:142
2599047992620,4cyclictest2681454-21latency_hist08:30:012
2599047992620,4cyclictest2681454-21latency_hist08:30:002
2599039992620,4cyclictest253-21systemd-journal11:55:470
2599047992421,2cyclictest2665906-21kworker/u8:1+flush-259:008:45:312
2599047992419,4cyclictest2887380-21apt-get11:00:122
2599047992320,2cyclictest516-21rs:main2
2599047992317,4cyclictest74-21kswapd012:00:122
2599042992321,2cyclictest2820788-21kworker/u8:3+flush-259:010:20:161
2599042992316,5cyclictest516-21rs:main1
2599039992317,4cyclictest2998451-21apt-get12:15:130
2599049992219,2cyclictest2774927-21kworker/u8:2+flush-259:010:05:253
2599049992218,3cyclictest74-21kswapd011:35:123
2599042992218,3cyclictest2923401-21kworker/u8:1+flush-259:012:05:191
2599039992219,2cyclictest74-21kswapd010:45:000
2599049992118,2cyclictest74-21kswapd010:20:003
2599049992117,3cyclictest514-21in:imuxsock07:20:013
2599049992116,3cyclictest2961336-21/usr/sbin/munin11:50:263
2599047992117,3cyclictest2820788-21kworker/u8:3+flush-259:010:20:262
2599047992115,4cyclictest2961001-21latency_hist11:50:012
2599047992114,4cyclictest2745237-21latency_hist09:25:012
2599042992117,3cyclictest2887043-21kworker/u8:0+events_unbound11:45:291
2599042992115,4cyclictest2946564-21/usr/sbin/munin11:40:171
2599042992115,4cyclictest2753000-21apt-get09:30:141
259903999211,19cyclictest2804553-21munin-run10:05:010
2599047992017,2cyclictest3035641-21turbostat.cron12:40:002
2599047992015,3cyclictest2760372-21apt-get09:35:132
2599042992017,2cyclictest2968445-21kworker/u8:4+flush-259:012:35:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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