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2021-01-27 - 12:36

Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz, Linux 5.10.1-rt20 (Profile)

Latency plot of system in rack #0, slot #5
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 rack0slot5.osadl.org (updated Wed Jan 27, 2021 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26312382730,0sleep00-21swapper/022:08:380
2502110996967,1cyclictest330419-21InputThread19:08:371
27564972680,0sleep40-21swapper/400:23:054
250212799680,68cyclictest0-21swapper/520:15:215
2502136996765,1cyclictest1563-21gnome-shell23:50:207
2502136996765,1cyclictest0-21swapper/722:43:307
2502136996765,1cyclictest0-21swapper/700:21:207
250213699670,66cyclictest0-21swapper/719:08:297
250212799670,66cyclictest43-21ksoftirqd/519:08:445
2502123996767,0cyclictest2585709-21kworker/4:021:29:204
2502123996766,1cyclictest2546885-21kworker/4:220:37:214
2502123996765,1cyclictest330419-21InputThread19:08:434
2502107996765,1cyclictest1563-21gnome-shell20:57:200
250212799660,66cyclictest2504355-21kworker/5:220:10:215
2502123996666,0cyclictest2546885-21kworker/4:220:25:214
2502123996666,0cyclictest2546885-21kworker/4:220:20:214
2502119996664,1cyclictest330419-21InputThread19:08:323
2502107996664,1cyclictest951-21snmpd20:28:100
27638242650,0sleep70-21swapper/700:32:057
2502132996563,1cyclictest2650659-21sensors22:28:366
2502127996564,1cyclictest0-21swapper/520:58:355
2502123996565,0cyclictest2528114-21kworker/4:219:39:214
2502119996563,1cyclictest2538023-21libvirtd19:58:293
2502115996564,0cyclictest0-21swapper/219:58:522
2502115996563,1cyclictest0-21swapper/222:33:372
2502107996564,1cyclictest0-21swapper/019:08:380
2502107996563,1cyclictest1563-21gnome-shell19:48:200
250212799640,63cyclictest0-21swapper/522:55:205
250212799640,63cyclictest0-21swapper/522:55:205
2502123996464,0cyclictest2546885-21kworker/4:220:33:214
2502123996464,0cyclictest2522887-21kworker/4:019:38:214
2502115996464,0cyclictest0-21swapper/222:28:362
2502115996462,1cyclictest2492879-21kworker/2:019:08:262
2502107996462,1cyclictest2640546-21libvirtd22:18:310
2502107996462,1cyclictest1563-21gnome-shell21:02:200
250210799640,63cyclictest0-21swapper/020:43:300
2502132996362,1cyclictest12150irq/31-ahci[00019:58:526
2502132996361,1cyclictest2655504-21sensors22:33:376
2502123996361,1cyclictest0-21swapper/423:48:314
250212399630,63cyclictest0-21swapper/423:15:204
2502119996361,1cyclictest0-21swapper/323:38:343
250210799630,62cyclictest0-21swapper/020:06:200
250213699620,61cyclictest0-21swapper/720:48:357
2502132996261,1cyclictest12150irq/31-ahci[00019:08:436
2502127996260,1cyclictest0-21swapper/520:53:165
250212799620,61cyclictest0-21swapper/522:58:375
250212799620,61cyclictest0-21swapper/522:58:375
250212399620,62cyclictest2564811-21kworker/4:121:07:204
2502115996261,1cyclictest2492879-21kworker/2:021:14:202
2502110996260,1cyclictest2721578-21sensors23:43:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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