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2022-07-04 - 02:09

x86 Intel Celeron M @1500 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, 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 -n -a0 -t1 -p99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 376 highest latencies:
System rack6slot5.osadl.org (updated Mon Jul 04, 2022 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139009964063539,2864cyclictest17519-21kworker/0:219:12:210
128082812183,203sleep00-21swapper19:05:200
139009962317,591cyclictest26489-21tail19:45:250
139009953915,509cyclictest7043-21ssh22:57:160
139009952915,498cyclictest25146-21diskmemload22:45:540
139009952716,496cyclictest13265-21seq00:26:510
139009952514,496cyclictest3865-21smartctl21:36:310
139009952514,496cyclictest14984-21ssh22:02:230
139009952215,491cyclictest19089-21fschecks_time22:11:420
139009951916,489cyclictest11710-21runrttasks00:24:290
139009951817,486cyclictest21345-21fschecks_time22:16:440
139009951116,434cyclictest27059-21ssh21:13:340
139009951014,433cyclictest6548-21perl00:11:420
139009950814,423cyclictest4906-21runrttasks23:51:270
139009949814,423cyclictest25146-21diskmemload21:28:490
139009949753,201cyclictest21247-21awk19:30:350
139009947115,385cyclictest24573-21munin-node23:40:290
139009947015,440cyclictest9068-21kworker/u2:123:17:190
139009946716,390cyclictest8178-21ssh21:46:380
139009946436,412cyclictest25570-21grep19:41:140
139009945884,360cyclictest11-21ksoftirqd/023:05:300
139009945494,347cyclictest345450irq/10-yenta00:04:470
139009945392,348cyclictest6870-21ssh21:43:410
139009945336,356cyclictest25146-21diskmemload22:07:090
139009945136,345cyclictest13446-21rm23:13:270
139009945067,369cyclictest20069-21ssh23:30:280
139009945015,420cyclictest25146-21diskmemload00:19:510
139009944914,419cyclictest25767-21ssh22:26:450
139009944869,365cyclictest1830-21munin-node20:05:420
139009944438,343cyclictest19643-21munin-node19:25:450
139009944436,348cyclictest32713-21kworker/u2:021:33:390
139009944436,338cyclictest17088-21ssh23:22:520
139009944317,402cyclictest19702-21rm23:29:450
139009944273,357cyclictest345450irq/10-yenta23:58:030
139009944236,346cyclictest4922-19udevd22:36:390
139009944215,412cyclictest29032-21munin-node21:20:250
139009943917,408cyclictest25425-21kworker/u2:023:49:100
139009943873,365cyclictest0-21swapper19:18:430
139009943736,339cyclictest2987-21munin-node00:05:180
139009943513,399cyclictest25146-21diskmemload21:15:180
139009943496,163cyclictest13-21rcuc/020:16:170
139009943354,318cyclictest12-21rcu_preempt22:20:100
139009942917,388cyclictest687-21ssh22:44:220
139009942868,301cyclictest8695-1kworker/u3:221:53:030
139009942763,305cyclictest13-21rcuc/022:34:540
139009942515,339cyclictest21591-21mailstats21:00:110
139009942514,395cyclictest16845-21cat00:36:180
139009942416,337cyclictest8016-21perl23:00:310
139009942118,341cyclictest14891-21grep00:31:150
139009941738,365cyclictest25146-21diskmemload21:57:210
139009941616,377cyclictest2956-21copy20:11:410
139009940860,348cyclictest0-21swapper21:10:000
139009940514,376cyclictest13-21rcuc/020:30:290
139009940243,344cyclictest3584-19ntpd23:39:350
139009939853,285cyclictest9625-21chrt20:26:010
139009939838,346cyclictest5042-21ssh22:53:180
139009939836,346cyclictest4083-21syslogd20:05:020
139009939737,337cyclictest17263-21apt19:20:320
139009938335,288cyclictest4906-21runrttasks00:42:120
139009938335,288cyclictest157802sleep020:43:460
139009938235,347cyclictest0-21swapper20:35:550
139009938135,286cyclictest30048-21df19:55:200
139009938133,287cyclictest4906-21runrttasks19:53:310
139009938051,269cyclictest22552-21munin-node19:35:390
139009937834,284cyclictest4922-19udevd20:46:010
139009937535,326cyclictest893-21jbd2/sda1-820:50:060
139009937430,328cyclictest21445-21sh21:00:010
139009936733,274cyclictest7179-21cpu20:20:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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