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2023-01-30 - 04:59

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 Jan 30, 2023 00:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22213222215209,3sleep80-21swapper/819:08:4914
22212242133131,1sleep40-21swapper/419:07:4010
2221032212493,29sleep140-21swapper/1419:05:426
2221791991170,75cyclictest9168-21seamonkey19:42:027
2221791991160,75cyclictest287433-21Compositor23:17:187
2221791991160,75cyclictest287433-21Compositor23:17:177
2221791991160,74cyclictest9168-21seamonkey22:33:057
2221791991104,105cyclictest2632032-21diskmemload22:58:047
22200642108106,1sleep10-21swapper/119:05:291
22217919910339,63cyclictest286855-21VizCompositorTh21:27:087
2221791991030,83cyclictest9270-21Softwar~cThread20:20:417
2221791991030,61cyclictest286855-21VizCompositorTh00:16:267
2221791991010,59cyclictest287038-21opera22:04:057
222179199980,78cyclictest2687659-21ssh21:21:197
769220960,64pipewire-pulse0-21swapper/1119:06:533
222179199960,54cyclictest9168-21seamonkey23:58:187
222179199960,54cyclictest9168-21seamonkey23:58:187
220544929564,29sleep150-21swapper/1519:05:127
769220930,73pipewire-pulse0-21swapper/319:05:019
222179199930,52cyclictest2259907-21/usr/sbin/munin19:15:297
222179199910,48cyclictest286855-21VizCompositorTh22:53:227
769720880,78pipewire0-21swapper/019:07:200
222106728885,1sleep50-21swapper/519:06:0511
222097228885,1sleep120-21swapper/1219:05:404
222179199850,43cyclictest3417450-21ssh00:31:547
222179199840,42cyclictest2768290-21cstates21:45:167
222179199830,62cyclictest287428-21Chrome_ChildIOT23:05:527
222179199830,42cyclictest0-21swapper/1500:26:027
222179199830,41cyclictest9168-21seamonkey19:52:187
222179199830,41cyclictest286855-21VizCompositorTh21:11:097
222179199830,41cyclictest0-21swapper/1522:39:147
222179199810,41cyclictest2630334-21/usr/sbin/munin21:05:297
222179199810,40cyclictest9168-21seamonkey23:42:187
222179199810,39cyclictest3377556-21ssh00:20:387
222179199810,39cyclictest286855-21VizCompositorTh23:11:237
222179199810,39cyclictest2763200-21libvirt-cputime21:40:297
222030928180,0sleep70-21swapper/719:05:3513
222179199800,38cyclictest287433-21Compositor21:54:157
222179199800,38cyclictest2726013-21sh21:31:217
222179199790,78cyclictest2632032-21diskmemload21:56:447
222179199790,59cyclictest3186128-21ntp_kernel_pll_23:30:397
222179199790,37cyclictest287433-21Compositor23:48:577
222179199780,37cyclictest2881758-21ssh22:13:357
222179199760,55cyclictest0-21swapper/1520:41:117
222179199760,34cyclictest9168-21seamonkey00:13:067
222179199760,34cyclictest9168-21seamonkey00:13:067
222179199760,34cyclictest287433-21Compositor20:45:487
766298750,63rtkit-daemon0-21swapper/1319:09:335
222179199758,67cyclictest2632032-21diskmemload23:26:387
222179199750,54cyclictest9168-21seamonkey23:37:307
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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