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2026-09-20 - 00:48
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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 Sat Sep 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
88232710,1sleep08826-21switchtime07:28:100
3188826955,9sleep10-21swapper/107:04:381
3191426856,8sleep00-21swapper/007:04:550
214882650,0sleep00-21swapper/012:25:280
32377993737,0cyclictest0-21swapper/109:17:161
32376993310,0cyclictest0-21swapper/008:49:530
32376993010,2cyclictest0-21swapper/007:16:290
32376992929,0cyclictest0-21swapper/008:34:440
32376992910,18cyclictest0-21swapper/009:49:470
32376992828,0cyclictest0-21swapper/008:29:080
32376992710,4cyclictest0-21swapper/011:15:420
32376992619,6cyclictest0-21swapper/012:33:280
3237699260,0cyclictest0-21swapper/009:32:210
32376992523,1cyclictest7-21ksoftirqd/010:33:040
3237699251,6cyclictest2729-21ssh11:58:090
32377992421,3cyclictest636-21nscd11:18:091
32377992417,6cyclictest18647-21python07:53:111
32377992410,2cyclictest0-21swapper/110:07:001
3237799240,23cyclictest0-21swapper/110:32:391
3237799240,11cyclictest0-21swapper/109:08:081
3237699241,22cyclictest0-21swapper/009:16:270
32376992410,5cyclictest0-21swapper/010:03:020
32376992410,3cyclictest9865-21apache208:54:470
32376992410,3cyclictest0-21swapper/011:41:370
3237799237,12cyclictest0-21swapper/108:58:061
32377992310,10cyclictest0-21swapper/111:25:011
3237699236,10cyclictest13923-21diskmemload09:53:040
3237699232,1cyclictest0-21swapper/011:49:570
3237699231,4cyclictest0-21swapper/012:07:220
32376992311,7cyclictest0-21swapper/012:31:260
32376992310,6cyclictest0-21swapper/012:20:540
32376992310,4cyclictest0-21swapper/010:42:560
32376992310,12cyclictest0-21swapper/010:12:090
32376992310,10cyclictest0-21swapper/007:22:510
169422310,0sleep00-21swapper/011:57:110
3237799225,12cyclictest0-21swapper/110:43:121
32377992221,1cyclictest0-21swapper/111:45:481
32377992220,1cyclictest0-21swapper/111:53:101
32377992217,3cyclictest9881-21apache209:56:371
32377992210,9cyclictest0-21swapper/108:53:111
32377992210,7cyclictest0-21swapper/108:36:221
32377992210,2cyclictest0-21swapper/112:36:591
32376992222,0cyclictest0-21swapper/011:29:070
32376992222,0cyclictest0-21swapper/009:26:330
32376992220,1cyclictest0-21swapper/009:34:480
32376992217,2cyclictest4706-21grep08:43:060
32376992212,7cyclictest0-21swapper/012:08:010
32376992210,7cyclictest0-21swapper/010:48:080
32376992210,4cyclictest0-21swapper/010:42:270
3237799219,6cyclictest0-21swapper/108:48:111
3237799215,8cyclictest0-21swapper/107:48:051
3237799214,12cyclictest0-21swapper/110:16:111
32377992121,0cyclictest0-21swapper/110:57:321
32377992110,7cyclictest0-21swapper/112:04:241
32377992110,6cyclictest0-21swapper/107:13:051
32377992110,2cyclictest0-21swapper/112:08:371
3237799210,20cyclictest0-21swapper/109:43:111
3237699219,5cyclictest27434-21expr10:13:050
3237699214,7cyclictest0-21swapper/007:11:340
32376992121,0cyclictest0-21swapper/008:01:170
32376992110,4cyclictest0-21swapper/009:41:150
32376992110,3cyclictest0-21swapper/009:21:310
32376992110,1cyclictest0-21swapper/011:26:220
3237699210,0cyclictest0-21swapper/010:19:490
3237799206,11cyclictest31187-21/usr/sbin/munin10:18:061
3237799201,2cyclictest0-21swapper/109:24:391
3237799201,12cyclictest0-21swapper/109:03:111
32377992010,7cyclictest0-21swapper/110:48:101
32377992010,4cyclictest0-21swapper/108:23:071
32377992010,2cyclictest0-21swapper/109:32:541
32377992010,2cyclictest0-21swapper/108:02:401
3237799200,6cyclictest24479-21snmpd10:32:581
3237799200,10cyclictest0-21swapper/107:43:041
3237699205,1cyclictest0-21swapper/011:20:330
3237699202,13cyclictest0-21swapper/011:43:300
32376992020,0cyclictest9881-21apache210:55:180
32376992015,5cyclictest9881-21apache212:16:400
32376992014,6cyclictest0-21swapper/009:11:210
32376992010,7cyclictest0-21swapper/009:05:290
32376992010,6cyclictest0-21swapper/010:01:040
1852422010,0sleep10-21swapper/112:21:361
3237799198,3cyclictest13923-21diskmemload10:38:091
3237799192,11cyclictest0-21swapper/107:32:511
32377991916,3cyclictest9881-21apache212:13:171
32377991914,3cyclictest9881-21apache208:31:521
32377991914,1cyclictest0-21swapper/109:19:321
32377991910,6cyclictest0-21swapper/109:48:231
32377991910,5cyclictest0-21swapper/108:18:101
32377991910,4cyclictest0-21swapper/111:33:061
32377991910,3cyclictest0-21swapper/112:23:481
32377991910,2cyclictest0-21swapper/111:40:071
32377991910,2cyclictest0-21swapper/107:38:031
32377991910,1cyclictest0-21swapper/111:15:161
3237799190,11cyclictest0-21swapper/107:28:041
3237699192,12cyclictest0-21swapper/007:23:060
32376991919,0cyclictest0-21swapper/007:37:470
32376991918,1cyclictest24479-21snmpd10:30:520
32376991912,5cyclictest7-21ksoftirqd/009:43:560
32376991911,3cyclictest100250irq/107-eth1-rx11:03:020
32376991910,5cyclictest0-21swapper/010:24:340
32376991910,3cyclictest0-21swapper/007:47:510
1630621910,0sleep10-21swapper/111:30:461
731321810,0sleep10-21swapper/107:25:101
3237799186,8cyclictest649-21nscd10:09:331
3237799184,8cyclictest0-21swapper/108:38:081
3237799183,9cyclictest28819-21ssh11:48:111
32377991811,4cyclictest9881-21apache208:08:091
32377991810,3cyclictest0-21swapper/111:00:051
32377991810,3cyclictest0-21swapper/110:22:551
32377991810,0cyclictest0-21swapper/112:00:071
3237799180,7cyclictest167-21systemd-journal07:18:111
3237799180,13cyclictest0-21swapper/109:38:031
3237699185,9cyclictest0-21swapper/008:03:080
3237699183,7cyclictest17641-21diskstats11:33:060
32376991814,3cyclictest29982-21pmu-power08:23:090
32376991810,2cyclictest0-21swapper/008:41:150
32376991810,0cyclictest0-21swapper/010:58:060
307921810,0sleep10-21swapper/111:12:151
3237799174,9cyclictest0-21swapper/108:43:131
32377991710,4cyclictest0-21swapper/111:03:031
32377991710,4cyclictest0-21swapper/108:03:031
32377991710,1cyclictest0-21swapper/109:28:341
3237699175,10cyclictest100150irq/106-eth1-rx11:09:500
32376991717,0cyclictest0-21swapper/008:08:120
2453121710,0sleep10-21swapper/112:29:331
32377991610,4cyclictest0-21swapper/110:01:251
32377991610,1cyclictest0-21swapper/107:11:341
32376991616,0cyclictest0-21swapper/007:48:120
32376991615,0cyclictest7-21ksoftirqd/008:22:520
32376991610,3cyclictest0-21swapper/007:53:030
32376991610,1cyclictest0-21swapper/008:58:100
3237799157,5cyclictest0-21swapper/108:13:041
3237799157,5cyclictest0-21swapper/108:13:041
32376991510,1cyclictest0-21swapper/007:38:210
32376991510,0cyclictest0-21swapper/008:16:490
32376991510,0cyclictest0-21swapper/008:16:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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