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2026-08-19 - 18:53
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100 highest latencies:
System rack1slot1.osadl.org (updated Wed Aug 19, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192092229157,25sleep30-21swapper/307:08:593
191242219153,22sleep20-21swapper/207:07:532
192062202149,21sleep00-21swapper/007:08:560
191922199162,24sleep10-21swapper/107:08:451
49002720,1sleep24895-21fschecks_count07:45:152
19388991110,1cyclictest28-21ksoftirqd/211:55:002
19388991110,1cyclictest24251-21ssh10:59:152
309162100,0sleep20-21swapper/211:08:082
1939899101,5cyclictest16156-21apt-get08:10:113
1938899109,1cyclictest28-21ksoftirqd/212:10:202
1938899109,1cyclictest28-21ksoftirqd/210:40:002
1938899109,1cyclictest28-21ksoftirqd/210:25:192
1938899109,1cyclictest28-21ksoftirqd/209:20:002
1938899108,1cyclictest28-21ksoftirqd/210:50:122
1938899108,1cyclictest28-21ksoftirqd/209:50:002
1938899103,3cyclictest61650irq/122-eno112:15:132
1938899100,9cyclictest0-21swapper/211:49:352
1938899100,0cyclictest0-21swapper/211:27:012
1937999100,10cyclictest0-21swapper/110:00:171
1937199102,4cyclictest2641-21cut08:50:000
1937199101,4cyclictest23066-21cut08:25:000
152102100,0sleep00-21swapper/012:17:470
193989997,1cyclictest12795-21mailstats08:00:203
193989991,6cyclictest158002sleep311:32:203
193889999,0cyclictest28-21ksoftirqd/208:25:132
193889998,1cyclictest28-21ksoftirqd/210:40:142
193889998,1cyclictest28-21ksoftirqd/209:35:142
193889998,1cyclictest28-21ksoftirqd/209:30:132
193889998,1cyclictest28-21ksoftirqd/207:55:002
193889997,1cyclictest28-21ksoftirqd/211:10:132
193889997,1cyclictest28-21ksoftirqd/210:10:162
193889997,1cyclictest28-21ksoftirqd/210:09:402
193889997,1cyclictest28-21ksoftirqd/207:10:142
193889991,7cyclictest32064-21apt-get07:35:122
193889990,8cyclictest0-21swapper/208:40:172
193719993,5cyclictest9724-21perf09:05:010
193719992,1cyclictest240-21systemd-journal12:14:550
193719990,8cyclictest0-21swapper/007:35:290
4150280,2sleep30-21swapper/312:00:523
193989988,0cyclictest35-21ksoftirqd/310:02:063
193989986,1cyclictest24140-21cat08:25:163
193989986,1cyclictest11301-21snmpd12:35:053
193989986,1cyclictest11301-21snmpd10:19:223
193989981,6cyclictest35-21ksoftirqd/310:25:193
193989980,5cyclictest18665-21/usr/sbin/munin10:05:193
193889988,0cyclictest28-21ksoftirqd/209:40:152
193889988,0cyclictest28-21ksoftirqd/209:25:202
193889988,0cyclictest28-21ksoftirqd/209:20:212
193889986,1cyclictest61650irq/122-eno112:38:062
193889986,1cyclictest61650irq/122-eno111:01:092
193889986,1cyclictest32318-21ntpq11:55:192
193889986,1cyclictest28-21ksoftirqd/212:00:232
193889986,1cyclictest28-21ksoftirqd/210:45:222
193889980,4cyclictest3715-21hwlatdetect11:15:162
193889980,2cyclictest0-21swapper/207:30:112
193889980,0cyclictest0-21swapper/212:08:292
193799983,5cyclictest0-21swapper/107:46:351
193799980,8cyclictest0-21swapper/111:30:241
193719987,1cyclictest9-21ksoftirqd/011:39:170
193719987,1cyclictest7245-21ssh10:35:100
193719987,1cyclictest3527-21ssh09:42:230
193719987,1cyclictest29836-21ssh11:51:430
193719987,1cyclictest27497-21ssh11:03:210
193719987,1cyclictest16428-21ssh11:34:230
193719987,1cyclictest1473-21ssh11:11:240
193719987,1cyclictest14283-21ssh10:45:130
193719986,1cyclictest23508-21cat07:15:150
193719986,1cyclictest11301-21snmpd09:15:180
193719986,1cyclictest11301-21snmpd07:40:590
193719985,2cyclictest21897-21cron10:10:000
193719981,6cyclictest32394-21taskset08:41:470
193719981,5cyclictest240-21systemd-journal12:40:010
193719981,1cyclictest6401-21apt-get11:20:100
193719981,1cyclictest2399-21ssh10:26:310
193719980,4cyclictest14048-21cut10:45:000
193719980,1cyclictest22698-21ssh12:29:190
23356270,1sleep223334-21gltestperf07:15:152
193989976,1cyclictest35-21ksoftirqd/312:27:423
193989976,1cyclictest11301-21snmpd10:45:473
193989975,1cyclictest35-21ksoftirqd/308:40:003
193989975,1cyclictest11301-21snmpd12:30:283
193989975,1cyclictest11301-21snmpd09:46:313
193989975,1cyclictest11301-21snmpd07:52:293
193989975,1cyclictest11301-21snmpd07:12:493
193989974,1cyclictest240-21systemd-journal11:59:553
193989973,2cyclictest240-21systemd-journal08:44:553
193989973,1cyclictest12038-21diskmemload09:25:033
193989971,3cyclictest12038-21diskmemload10:51:573
193989971,3cyclictest12038-21diskmemload09:40:033
193989970,6cyclictest4857-21ssh11:15:583
193989970,5cyclictest0-21swapper/310:34:503
193989970,4cyclictest0-21swapper/312:16:313
193989970,3cyclictest0-21swapper/311:14:133
193989970,3cyclictest0-21swapper/309:32:123
193989970,2cyclictest0-21swapper/311:41:493
193989970,2cyclictest0-21swapper/310:35:113
193989970,1cyclictest0-21swapper/310:10:123
193989970,1cyclictest0-21swapper/308:05:123
193889977,0cyclictest28-21ksoftirqd/209:55:142
193889976,1cyclictest61650irq/122-eno111:21:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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