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2026-06-11 - 14:47
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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 highest latencies:
System rackcslot2.osadl.org (updated Thu Jun 11, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247272730,1sleep00-21swapper/022:45:570
153926847,17sleep10-21swapper/119:08:021
124726855,8sleep00-21swapper/019:04:570
1789993310,1cyclictest0-21swapper/123:16:521
1789993010,19cyclictest31548-21kworker/1:019:28:251
1789992710,6cyclictest0-21swapper/122:07:121
1789992710,11cyclictest0-21swapper/121:51:521
1788992725,1cyclictest0-21swapper/000:26:370
178899271,22cyclictest0-21swapper/021:57:500
1788992710,1cyclictest0-21swapper/022:16:440
1789992623,2cyclictest231ktimersoftd/119:28:541
1789992621,4cyclictest802-21apache221:07:071
1788992616,9cyclictest19568-21apache222:58:530
1788992611,9cyclictest100250irq/107-eth1-rx23:49:560
1788992610,7cyclictest0-21swapper/000:28:540
1788992610,10cyclictest0-21swapper/022:27:140
1789992523,1cyclictest2983-21diskstats21:33:551
1789992510,15cyclictest0-21swapper/100:36:461
1789992510,14cyclictest0-21swapper/121:45:221
178999250,20cyclictest0-21swapper/121:15:071
1788992511,9cyclictest11799-1kworker/u5:223:59:590
1788992510,1cyclictest0-21swapper/022:40:380
178899250,6cyclictest0-21swapper/021:23:590
1789992424,0cyclictest0-21swapper/119:54:501
1789992423,1cyclictest0-21swapper/123:48:311
1789992413,7cyclictest0-21swapper/123:28:031
1789992411,5cyclictest0-21swapper/121:02:251
1788992410,8cyclictest0-21swapper/021:49:190
1788992410,8cyclictest0-21swapper/021:44:040
178899240,11cyclictest23767-21apache_volume23:28:540
178999236,10cyclictest18565-21/usr/sbin/munin00:04:031
1789992318,4cyclictest19568-21apache200:00:261
1789992310,2cyclictest0-21swapper/120:35:591
1789992310,10cyclictest0-21swapper/122:01:241
1788992323,0cyclictest0-21swapper/022:57:120
1788992317,4cyclictest19594-21apache219:12:480
178899231,21cyclictest5348-21runrttasks21:36:530
1788992311,3cyclictest0-21swapper/023:23:570
1788992310,4cyclictest0-21swapper/021:18:470
1788992310,3cyclictest0-21swapper/020:38:560
1788992310,2cyclictest0-21swapper/000:19:050
1789992222,0cyclictest0-21swapper/123:21:491
1789992211,4cyclictest1786-21cyclictest23:43:041
1788992220,1cyclictest0-21swapper/021:41:440
1788992210,5cyclictest0-21swapper/019:33:560
178899220,21cyclictest13395-21rm22:30:270
776922110,0sleep10-21swapper/123:49:351
178999216,6cyclictest0-21swapper/120:42:131
178999213,12cyclictest0-21swapper/119:48:591
1789992120,1cyclictest19568-21apache222:09:571
1789992116,3cyclictest19568-21apache222:36:401
1789992113,5cyclictest19594-21apache221:28:091
1789992111,4cyclictest0-21swapper/120:28:531
1789992110,6cyclictest0-21swapper/120:48:561
1789992110,3cyclictest0-21swapper/100:28:541
178899214,10cyclictest0-21swapper/020:33:530
1788992115,5cyclictest802-21apache220:03:580
178899211,19cyclictest0-21swapper/021:30:550
1788992110,5cyclictest0-21swapper/022:37:140
547522010,0sleep10-21swapper/119:18:431
215122010,1sleep00-21swapper/023:43:250
1990422010,0sleep10-21swapper/121:56:111
178999205,10cyclictest0-21swapper/123:29:011
178999204,9cyclictest0-21swapper/122:54:021
178999204,6cyclictest0-21swapper/123:08:331
178999203,5cyclictest0-21swapper/122:31:041
178999203,4cyclictest0-21swapper/100:18:541
1789992020,0cyclictest0-21swapper/121:19:021
1789992017,2cyclictest19594-21apache223:11:071
1789992017,2cyclictest1786-21cyclictest22:20:201
1789992017,1cyclictest0-21swapper/122:51:551
178999201,18cyclictest0-21swapper/122:48:011
1789992010,6cyclictest0-21swapper/100:12:241
1789992010,5cyclictest0-21swapper/121:11:241
178999200,4cyclictest0-21swapper/123:54:231
178899204,6cyclictest0-21swapper/020:24:020
178899204,10cyclictest0-21swapper/021:03:550
1788992020,0cyclictest0-21swapper/019:28:560
1788992020,0cyclictest0-21swapper/000:37:540
1788992017,3cyclictest19594-21apache222:11:150
1788992017,2cyclictest19594-21apache220:53:530
1788992012,3cyclictest0-21swapper/020:53:390
1788992010,9cyclictest0-21swapper/023:47:460
1788992010,7cyclictest0-21swapper/022:02:240
1788992010,5cyclictest0-21swapper/023:18:260
1788992010,5cyclictest0-21swapper/023:12:030
1788992010,2cyclictest0-21swapper/019:38:540
1788992010,1cyclictest0-21swapper/022:05:390
178899200,1cyclictest0-21swapper/022:21:580
178999199,2cyclictest27808-21cut23:33:561
178999194,14cyclictest0-21swapper/121:38:591
1789991910,4cyclictest0-21swapper/122:13:561
1789991910,4cyclictest0-21swapper/120:54:021
1789991910,4cyclictest0-21swapper/120:13:591
178899199,3cyclictest9024-21runrttasks19:25:370
178899195,11cyclictest0-21swapper/022:49:030
1788991917,1cyclictest26069-21ls20:09:030
1788991912,6cyclictest0-21swapper/020:14:010
1788991912,0cyclictest0-21swapper/023:05:150
1788991910,5cyclictest0-21swapper/019:13:560
1788991910,4cyclictest0-21swapper/023:20:000
1788991910,3cyclictest0-21swapper/019:48:430
1788991910,1cyclictest0-21swapper/023:34:150
2446921810,0sleep10-21swapper/120:06:061
178999184,9cyclictest0-21swapper/122:23:531
178999181,5cyclictest0-21swapper/121:30:461
1789991815,2cyclictest1786-21cyclictest23:01:531
1789991810,3cyclictest0-21swapper/120:23:581
1789991810,0cyclictest0-21swapper/119:17:491
178999180,5cyclictest0-21swapper/119:36:461
1788991811,4cyclictest2559-21kworker/0:021:00:340
1788991810,3cyclictest0-21swapper/021:10:260
1788991810,3cyclictest0-21swapper/000:15:570
1788991810,2cyclictest0-21swapper/020:46:190
178899180,13cyclictest0-21swapper/023:58:190
178999176,5cyclictest0-21swapper/119:12:301
1789991710,3cyclictest0-21swapper/120:09:031
1789991710,3cyclictest0-21swapper/119:58:541
1789991710,3cyclictest0-21swapper/119:39:041
178899173,7cyclictest0-21swapper/021:13:540
178899173,7cyclictest0-21swapper/020:18:540
178899172,7cyclictest21428-21/usr/sbin/munin19:58:570
1788991710,3cyclictest0-21swapper/019:48:540
1788991710,3cyclictest0-21swapper/000:08:570
1788991710,2cyclictest0-21swapper/000:05:150
178999165,8cyclictest0-21swapper/100:14:031
178999163,7cyclictest0-21swapper/122:38:521
1789991610,2cyclictest0-21swapper/120:44:011
1789991610,2cyclictest0-21swapper/119:44:031
1788991611,3cyclictest2559-21kworker/0:019:55:260
704721510,0sleep00-21swapper/019:19:590
178999151,4cyclictest0-21swapper/120:22:211
1789991510,1cyclictest0-21swapper/100:23:561
1788991410,1cyclictest0-21swapper/020:28:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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