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2025-11-17 - 10:42
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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 Mon Nov 17, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1544427448,21sleep00-21swapper/019:03:240
1547926957,8sleep10-21swapper/119:03:451
15953993210,7cyclictest0-21swapper/122:17:051
15953993210,3cyclictest0-21swapper/123:52:221
15953992921,6cyclictest24479-21apache222:46:481
15952992910,3cyclictest0-21swapper/022:31:190
15953992810,17cyclictest0-21swapper/120:48:031
1595399280,7cyclictest8181-21kworker/u4:121:56:151
1595399271,4cyclictest32069-21ssh00:04:121
15953992714,4cyclictest15950-21cyclictest00:07:111
15952992727,0cyclictest0-21swapper/023:19:400
1595399265,6cyclictest0-21swapper/119:17:051
1595399261,10cyclictest636-21nscd22:46:061
1595299260,25cyclictest0-21swapper/023:31:310
1595299260,11cyclictest0-21swapper/000:04:300
1595399253,8cyclictest0-21swapper/119:52:091
15953992519,3cyclictest24452-21apache200:18:491
15953992510,8cyclictest0-21swapper/123:22:091
15953992510,6cyclictest0-21swapper/121:42:011
15952992510,7cyclictest0-21swapper/019:12:000
15953992423,1cyclictest0-21swapper/121:20:531
15953992420,3cyclictest24452-21apache220:08:411
15953992410,6cyclictest0-21swapper/100:16:101
1595399240,12cyclictest0-21swapper/123:49:261
15952992424,0cyclictest7-21ksoftirqd/021:42:100
1595399235,10cyclictest0-21swapper/119:27:011
15953992322,0cyclictest231ktimersoftd/120:17:091
1595399231,7cyclictest0-21swapper/121:37:021
1595299236,7cyclictest0-21swapper/023:22:010
1595299232,16cyclictest0-21swapper/021:34:400
1595299231,16cyclictest0-21swapper/023:39:420
15952992311,6cyclictest0-21swapper/019:57:120
1595299230,22cyclictest0-21swapper/022:41:110
1595399225,10cyclictest0-21swapper/122:27:111
15953992222,0cyclictest0-21swapper/123:30:161
15953992219,2cyclictest24452-21apache223:14:221
15953992210,10cyclictest3924-21ls19:57:121
1595399220,16cyclictest0-21swapper/121:32:121
1595299225,12cyclictest0-21swapper/000:11:440
1595299223,13cyclictest2799-21kworker/u4:000:16:510
15952992222,0cyclictest0-21swapper/022:54:170
15952992210,7cyclictest0-21swapper/021:29:210
15952992210,4cyclictest0-21swapper/022:57:220
15952992210,0cyclictest0-21swapper/000:24:150
1595399215,9cyclictest0-21swapper/100:27:091
15953992110,6cyclictest0-21swapper/123:57:021
15953992110,4cyclictest0-21swapper/121:22:591
1595399210,3cyclictest13339-21rm23:38:511
1595399210,3cyclictest0-21swapper/122:14:591
1595299215,10cyclictest25626-21/usr/sbin/munin19:32:090
15952992119,1cyclictest24452-21apache221:57:210
15952992110,9cyclictest0-21swapper/020:07:540
15952992110,4cyclictest0-21swapper/023:47:000
15952992110,3cyclictest98050irq/109-eth1-tx00:28:180
15952992110,3cyclictest0-21swapper/021:17:040
1569722110,0sleep10-21swapper/121:31:061
2259222010,0sleep00-21swapper/021:39:540
1595399202,11cyclictest0-21swapper/120:32:081
15953992016,2cyclictest29600-21diskmemload00:25:231
15953992010,8cyclictest0-21swapper/120:02:021
15953992010,3cyclictest0-21swapper/123:36:351
15953992010,3cyclictest0-21swapper/121:13:181
15953992010,0cyclictest0-21swapper/121:09:061
1595399200,9cyclictest0-21swapper/123:21:201
1595299204,10cyclictest27100-21python23:57:080
1595299203,13cyclictest0-21swapper/019:07:060
15952992017,2cyclictest636-21nscd22:45:300
15952992016,2cyclictest24479-21apache221:22:510
15952992014,4cyclictest0-21swapper/019:22:070
15952992014,3cyclictest97850irq/107-eth1-rx23:04:520
15952992012,3cyclictest0-21swapper/023:07:070
15952992010,8cyclictest24452-21apache219:30:400
15952992010,6cyclictest0-21swapper/021:51:590
15952992010,5cyclictest0-21swapper/022:21:590
15952992010,2cyclictest0-21swapper/023:16:160
15952992010,0cyclictest0-21swapper/020:46:250
1939821910,0sleep10-21swapper/119:14:211
1595399196,7cyclictest27834-21/usr/sbin/munin21:02:011
1595399195,5cyclictest23510-21munin-run19:26:481
1595399194,6cyclictest29600-21diskmemload22:02:061
15953991919,0cyclictest0-21swapper/119:35:081
15953991917,2cyclictest24452-21apache223:08:361
15953991910,7cyclictest0-21swapper/120:39:181
15953991910,3cyclictest0-21swapper/122:37:011
15953991910,2cyclictest0-21swapper/122:32:011
1595299194,10cyclictest0-21swapper/019:42:010
15952991918,1cyclictest24479-21apache219:49:390
15952991918,1cyclictest0-21swapper/000:32:460
15952991917,1cyclictest81ktimersoftd/023:52:580
15952991910,7cyclictest0-21swapper/021:15:060
15952991910,7cyclictest0-21swapper/020:16:380
15952991910,6cyclictest0-21swapper/021:47:480
15952991910,6cyclictest0-21swapper/019:55:050
15952991910,5cyclictest0-21swapper/023:42:100
15952991910,4cyclictest0-21swapper/020:51:480
15952991910,3cyclictest0-21swapper/022:06:570
15952991910,3cyclictest0-21swapper/020:17:100
1518521910,1sleep00-21swapper/022:13:080
2912921810,0sleep00-21swapper/019:40:040
1595399189,6cyclictest24452-21apache223:01:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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