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2022-06-27 - 15:56

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #7
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 rack0slot7.osadl.org (updated Mon Jun 27, 2022 00:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36199029993,3sleep40-21swapper/419:09:1010
36194829289,1sleep120-21swapper/1219:08:474
36186128277,2sleep00-21swapper/019:07:470
36190428178,1sleep140-21swapper/1419:08:176
36205927764,7sleep70-21swapper/719:09:3013
36174327572,1sleep30-21swapper/319:07:009
400420730,64pipewire-pulse0-21swapper/219:09:388
36178227144,23sleep100-21swapper/1019:07:242
36177227147,10sleep10-21swapper/119:07:151
36171127057,7sleep130-21swapper/1319:06:395
36264299647,34cyclictest242299-21GLXVsyncThread19:48:346
36178326455,4sleep110-21swapper/1119:07:253
398499600,50rtkit-daemon0-21swapper/819:05:3114
133399600,0ntpd0-21swapper/219:53:308
36171625847,5sleep150-21swapper/1519:06:417
36193925747,5sleep50-21swapper/519:08:4011
133399570,0ntpd0-21swapper/220:53:298
36161125536,12sleep60-21swapper/619:05:4412
36263999541,27cyclictest270736-21StyleThread#319:10:295
36187025445,4sleep90-21swapper/919:07:5615
362611995019,30cyclictest406082-21Isolated12:52:4611
362606995018,26cyclictest235456-21seamonkey20:07:449
362628994621,25cyclictest3512-21Xorg22:24:362
36261199446,19cyclictest235209-21WebExtensions19:43:2611
36259399445,33cyclictest0-21swapper/020:10:120
362646994341,2cyclictest0-21swapper/1519:43:027
133399420,0ntpd0-21swapper/222:53:308
362642994117,14cyclictest0-21swapper/1419:11:026
362642994115,23cyclictest0-21swapper/1420:04:176
362639994113,16cyclictest0-21swapper/1319:48:345
362608994124,14cyclictest0-21swapper/419:18:1510
133399410,1ntpd32-21ksoftirqd/219:56:108
36263699405,16cyclictest235209-21WebExtensions19:49:594
36262899406,15cyclictest235209-21WebExtensions19:43:352
36261199409,15cyclictest420459-21Web12:52:4611
36261199406,20cyclictest234931-21IPC11
36260699400,3cyclictest0-21swapper/319:49:589
362593994035,2cyclictest0-21swapper/019:37:560
362593994035,2cyclictest0-21swapper/019:37:560
133399400,4ntpd32-21ksoftirqd/223:45:488
36264299399,28cyclictest0-21swapper/1419:54:376
362642993921,15cyclictest0-21swapper/1419:44:356
36263699397,15cyclictest3860-21gnome-shell19:34:024
133399390,3ntpd32-21ksoftirqd/219:46:468
36264699380,36cyclictest0-21swapper/1520:40:307
362642993827,10cyclictest0-21swapper/1420:05:036
362642993819,15cyclictest0-21swapper/1419:37:566
362642993819,15cyclictest0-21swapper/1419:37:556
362636993811,26cyclictest595133-21kworker/u32:023:52:434
362618993811,6cyclictest420229-21ThreadPoolForeg20:05:4313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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