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2021-01-27 - 12:32

Intel(R) Core(TM) i3-4360 CPU @ 3.70GHz, Linux 5.10.1-rt20 (Profile)

Latency plot of system in rack #0, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot4.osadl.org (updated Wed Jan 27, 2021 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
810502211272,18sleep10-21swapper/119:07:461
810668210473,18sleep30-21swapper/319:09:523
810465210472,19sleep20-21swapper/219:07:192
810616210171,18sleep00-21swapper/019:09:130
81085699670,64cyclictest826352-21systemd-userwor19:52:032
810861996624,30cyclictest0-21swapper/320:29:153
810856996561,2cyclictest958125-21systemd-userwor23:04:232
81085699650,63cyclictest896335-21systemd-userwor21:57:302
81085699650,62cyclictest977811-21systemd-userwor23:29:292
810861996411,28cyclictest0-21swapper/300:09:213
810856996461,1cyclictest876005-21systemd-userwor21:32:252
810856996460,1cyclictest940020-21systemd-userwor22:47:402
810856996459,2cyclictest927598-21systemd-userwor22:30:562
81085699640,64cyclictest0-21swapper/221:20:162
81085699640,61cyclictest982182-21systemd-userwor23:37:502
9027412630,0sleep20-21swapper/222:00:062
810861996362,1cyclictest903527-21sensors22:00:123
810861996362,1cyclictest838395-21sensors20:15:123
810856996359,1cyclictest855679-21systemd-userwor20:58:572
810856996358,2cyclictest999659-21systemd-userwor23:54:342
81085699630,63cyclictest981298-21ssh23:31:112
81085699630,63cyclictest0-21swapper/223:20:362
81085699630,63cyclictest0-21swapper/223:08:192
81085699630,60cyclictest825832-21systemd-userwor19:43:402
81085699630,59cyclictest841067-21systemd-userwor20:25:302
81085699630,0cyclictest851377-21kworker/u8:221:12:572
81085699630,0cyclictest0-21swapper/222:07:332
81085699630,0cyclictest0-21swapper/221:41:172
81085699630,0cyclictest0-21swapper/221:25:142
81085699630,0cyclictest0-21swapper/200:22:442
81085699630,0cyclictest0-21swapper/200:05:392
810852996361,1cyclictest2129-21gnome-shell19:19:591
810850996362,1cyclictest855719-21kworker/0:121:30:110
810861996261,1cyclictest1000-21snmpd19:14:063
810856996260,2cyclictest1018780-21kworker/2:000:25:072
81085699620,62cyclictest0-21swapper/223:14:282
81085699620,62cyclictest0-21swapper/222:25:192
81085699620,62cyclictest0-21swapper/222:25:182
81085699620,62cyclictest0-21swapper/221:48:272
81085699620,62cyclictest0-21swapper/221:17:442
81085699620,62cyclictest0-21swapper/219:13:292
81085699620,59cyclictest936335-21systemd-userwor22:39:182
81085699620,0cyclictest0-21swapper/222:53:582
81085699620,0cyclictest0-21swapper/222:43:042
81085699620,0cyclictest0-21swapper/200:31:572
810852996260,1cyclictest2129-21gnome-shell21:01:591
810852996260,1cyclictest2129-21gnome-shell20:23:581
810861996158,3cyclictest832126-21sensors20:00:133
810861996158,3cyclictest832126-21sensors20:00:133
810861996157,1cyclictest857163-21sensors21:00:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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