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2022-06-27 - 04:03

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 highest latencies:
System rack6slot5.osadl.org (updated Mon Jun 27, 2022 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24159990134766,4244cyclictest21432-21kworker/0:019:12:070
12842792183,177sleep00-21swapper19:05:160
24159950156,204cyclictest13108-21ssh22:21:400
24159949136,440cyclictest13562-21fschecks_count21:06:110
24159949055,191cyclictest19391-21perl22:36:310
24159946121,379cyclictest4451-21seq20:42:250
24159945559,373cyclictest14035-21diskmemload22:00:300
2415994555,436cyclictest7064-21ssh23:24:390
24159945320,363cyclictest8257-21ssh22:10:540
24159944516,367cyclictest4300-21lldpd23:30:150
24159944267,360cyclictest13312-21ssh23:38:450
24159944255,373cyclictest0-21swapper19:29:100
24159943916,363cyclictest15951-21ssh21:13:360
24159943851,373cyclictest0-21swapper19:57:260
2415994374,372cyclictest20160-21ssh21:22:460
2415994361,374cyclictest0-21swapper21:18:190
24159943568,308cyclictest13902-21munin-node22:25:540
24159943555,366cyclictest24968-21ssh00:07:400
2415994352,373cyclictest0-21swapper19:22:230
2415994341,373cyclictest0-21swapper20:07:160
2415994341,373cyclictest0-21swapper19:42:580
24159943147,370cyclictest4681-21ssh23:18:290
24159942759,354cyclictest7602-21wc20:50:490
24159942632,87cyclictest29096-21ssh21:43:380
2415994261,249cyclictest14035-21diskmemload21:59:160
24159942563,302cyclictest14035-21diskmemload23:13:460
24159942261,300cyclictest1156-21ssh00:28:080
24159942161,87cyclictest347-21ssh23:08:500
24159942149,302cyclictest7751-21ssh23:25:440
24159941948,358cyclictest0-21swapper00:22:380
24159941832,372cyclictest26104-21ssh21:36:150
24159941637,87cyclictest30730-21ssh23:04:060
24159941553,303cyclictest0-21swapper21:54:130
24159941150,87cyclictest4915-21runrttasks19:45:530
24159941036,360cyclictest4915-21runrttasks20:47:320
24159940932,369cyclictest14035-21diskmemload22:33:060
24159940835,371cyclictest8847-21kworker/u2:123:54:110
24159940832,362cyclictest23498-21ssh22:46:170
24159940753,354cyclictest0-21swapper20:15:580
24159940732,360cyclictest30930-21ssh21:46:510
24159940660,346cyclictest0-21swapper20:57:490
24159940555,337cyclictest360150irq/10-yenta19:52:470
24159940522,368cyclictest7034-21ssh22:08:220
24159940458,346cyclictest0-21swapper00:34:540
24159940054,346cyclictest0-21swapper19:33:180
24159940051,349cyclictest0-21swapper21:02:560
24159939938,361cyclictest0-21swapper21:26:040
24159939938,302cyclictest0-21swapper00:12:260
24159939751,346cyclictest0-21swapper20:11:330
24159939735,178cyclictest4930-21ssh00:36:180
24159939535,360cyclictest0-21swapper22:17:330
24159939532,350cyclictest31409-21seq20:29:100
24159939532,350cyclictest22758-21ssh00:02:140
24159939334,359cyclictest0-21swapper20:35:350
24159939238,339cyclictest14612-21ssh23:41:350
24159939232,360cyclictest0-21swapper23:48:380
24159939137,339cyclictest4266-21nscd23:57:270
24159939131,360cyclictest0-21swapper19:38:190
24159939036,331cyclictest28854-21latency_hist23:00:070
24159939031,359cyclictest0-21swapper21:33:480
241599389120,88cyclictest4319-21snmpd22:50:230
24159938614,88cyclictest22013-21ssh22:43:150
24159937834,344cyclictest3712sleep020:31:070
2415993734,369cyclictest0-21swapper19:15:520
24159937132,339cyclictest28512-21chrt20:20:370
24159937034,336cyclictest14035-21diskmemload00:19:190
24159934664,268cyclictest11-21ksoftirqd/020:00:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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