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2026-04-23 - 23:14
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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 rackcslot2.osadl.org (updated Thu Apr 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320712750,1sleep10-21swapper/109:44:021
2264526957,8sleep10-21swapper/107:07:021
2251026754,8sleep00-21swapper/007:05:370
23024993610,2cyclictest0-21swapper/110:08:241
23023993332,0cyclictest0-21swapper/009:07:200
23024992927,0cyclictest0-21swapper/108:35:181
23024992910,4cyclictest0-21swapper/112:33:241
23023992924,3cyclictest744-21snmpd10:55:300
23024992820,4cyclictest460-21apache209:22:371
23024992810,2cyclictest0-21swapper/110:41:201
23023992818,9cyclictest0-21swapper/007:14:510
23023992810,12cyclictest0-21swapper/011:27:570
23024992710,0cyclictest0-21swapper/107:56:381
23023992722,4cyclictest460-21apache212:10:300
23024992626,0cyclictest0-21swapper/110:04:031
23024992610,9cyclictest0-21swapper/108:44:221
23024992610,6cyclictest0-21swapper/108:00:411
23024992610,2cyclictest0-21swapper/109:56:271
23023992617,6cyclictest460-21apache211:03:480
23024992518,4cyclictest460-21apache210:29:011
23024992517,7cyclictest460-21apache212:21:391
2302499250,21cyclictest4576-21diskmemload11:18:071
23023992525,0cyclictest0-21swapper/008:26:150
23023992513,5cyclictest0-21swapper/010:35:150
23024992422,2cyclictest0-21swapper/108:08:571
23024992418,4cyclictest802-21apache210:20:401
23024992415,5cyclictest231ktimersoftd/112:12:491
23023992424,0cyclictest0-21swapper/012:22:080
23023992410,7cyclictest0-21swapper/009:37:550
23023992410,11cyclictest0-21swapper/010:32:370
2302399240,20cyclictest0-21swapper/011:05:450
545022310,0sleep10-21swapper/109:49:301
23024992323,0cyclictest0-21swapper/108:19:061
23024992310,7cyclictest0-21swapper/107:49:181
23024992310,6cyclictest0-21swapper/109:45:111
23024992310,5cyclictest0-21swapper/111:29:161
23023992322,1cyclictest460-21apache209:18:370
23023992313,5cyclictest28546-21ssh11:44:180
2302399231,21cyclictest3807-21ssh11:11:180
23023992310,6cyclictest0-21swapper/008:39:230
2302399230,23cyclictest0-21swapper/012:04:250
2302499226,7cyclictest18873-21irqstats10:49:191
2302499223,2cyclictest16820-21kworker/u4:209:38:191
23024992222,0cyclictest0-21swapper/111:22:561
23024992210,7cyclictest0-21swapper/107:15:301
23024992210,5cyclictest0-21swapper/107:34:221
23024992210,4cyclictest0-21swapper/110:54:181
2302499220,3cyclictest0-21swapper/111:24:251
2302399225,11cyclictest0-21swapper/011:20:060
2302399224,8cyclictest0-21swapper/009:19:240
23023992218,2cyclictest0-21swapper/010:04:570
23023992210,8cyclictest0-21swapper/012:00:040
23023992210,7cyclictest0-21swapper/009:24:260
23023992210,6cyclictest0-21swapper/012:14:180
23023992210,2cyclictest0-21swapper/009:57:170
192922210,2sleep10-21swapper/111:50:271
2990222110,0sleep10-21swapper/111:04:081
2302499218,12cyclictest7705-21kworker/u4:009:14:581
23024992121,0cyclictest0-21swapper/107:29:221
23024992116,4cyclictest0-21swapper/111:59:451
23024992110,7cyclictest0-21swapper/112:04:151
23024992110,5cyclictest0-21swapper/107:09:131
23024992110,4cyclictest0-21swapper/107:39:541
2302399216,10cyclictest0-21swapper/010:49:220
2302399212,15cyclictest0-21swapper/009:59:180
2302399212,15cyclictest0-21swapper/007:29:200
23023992110,7cyclictest100250irq/107-eth1-rx09:43:150
23023992110,7cyclictest0-21swapper/011:34:180
23023992110,5cyclictest0-21swapper/009:29:180
23023992110,3cyclictest0-21swapper/012:35:150
2302399210,20cyclictest0-21swapper/012:30:420
2302499204,8cyclictest0-21swapper/111:34:251
2302499204,6cyclictest19414-21/usr/sbin/munin12:14:181
2302499203,9cyclictest0-21swapper/110:37:031
2302499202,14cyclictest0-21swapper/109:31:491
23024992013,1cyclictest0-21swapper/111:12:491
23024992010,6cyclictest0-21swapper/109:11:051
23024992010,5cyclictest27610-21missed_timers07:19:221
23024992010,5cyclictest1567-1kworker/u5:111:55:361
23024992010,5cyclictest0-21swapper/111:46:351
2302399204,9cyclictest0-21swapper/009:54:050
2302399204,10cyclictest0-21swapper/008:59:170
2302399203,10cyclictest0-21swapper/008:14:240
23023992010,6cyclictest0-21swapper/011:42:340
23023992010,3cyclictest0-21swapper/011:55:070
23024991917,1cyclictest460-21apache212:24:161
23024991910,7cyclictest0-21swapper/110:15:561
23024991910,6cyclictest0-21swapper/108:59:191
23024991910,3cyclictest0-21swapper/108:29:251
23023991915,2cyclictest23021-21cyclictest12:26:320
23023991911,6cyclictest15542-21timerwakeupswit10:44:280
23023991911,6cyclictest100250irq/107-eth1-rx07:49:210
23023991910,6cyclictest0-21swapper/008:04:180
23023991910,5cyclictest0-21swapper/009:49:060
23023991910,4cyclictest0-21swapper/011:29:120
23023991910,4cyclictest0-21swapper/008:19:170
23023991910,3cyclictest0-21swapper/010:24:250
2302399190,18cyclictest0-21swapper/010:22:160
3216421810,0sleep00-21swapper/008:54:240
2302499184,7cyclictest0-21swapper/108:24:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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