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2026-01-10 - 10:49
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Sat Jan 10, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
802927952,22sleep00-21swapper/019:08:420
267912710,0sleep10-21swapper/121:15:051
38452700,1sleep00-21swapper/020:20:080
782726654,8sleep10-21swapper/119:06:361
832099320,30cyclictest0-21swapper/023:35:040
8321992910,6cyclictest0-21swapper/122:05:091
832199288,19cyclictest0-21swapper/123:44:311
8321992810,10cyclictest0-21swapper/122:03:231
832099270,5cyclictest0-21swapper/022:33:040
832099270,22cyclictest0-21swapper/021:45:340
8321992612,9cyclictest636-21nscd00:20:021
832199260,16cyclictest0-21swapper/100:05:021
8320992625,0cyclictest0-21swapper/000:14:440
8320992610,8cyclictest0-21swapper/022:01:470
832199250,13cyclictest100350irq/108-eth1-tx21:20:011
8320992520,5cyclictest6149-21apache223:47:150
8320992510,12cyclictest0-21swapper/021:53:290
8321992420,4cyclictest6149-21apache221:31:161
832199241,20cyclictest0-21swapper/100:16:171
8321992410,7cyclictest100250irq/107-eth1-rx00:10:451
8321992410,7cyclictest0-21swapper/120:37:211
8321992410,13cyclictest0-21swapper/120:18:251
8321992410,10cyclictest0-21swapper/123:12:051
8320992421,2cyclictest16435-21/usr/sbin/munin23:55:080
832099241,3cyclictest0-21swapper/023:32:520
832099241,22cyclictest0-21swapper/023:26:090
8320992410,1cyclictest0-21swapper/000:01:480
832199232,6cyclictest10095-21cron19:14:511
832199232,6cyclictest10095-21cron19:14:511
8321992321,1cyclictest0-21swapper/122:51:311
8321992310,6cyclictest0-21swapper/122:35:081
8321992310,3cyclictest0-21swapper/121:57:441
8320992319,4cyclictest6153-21apache223:07:280
8320992319,3cyclictest6149-21apache200:21:020
8320992311,6cyclictest100250irq/107-eth1-rx00:38:450
8320992311,6cyclictest100250irq/107-eth1-rx00:38:450
8321992220,1cyclictest6780-21/usr/sbin/munin20:30:051
8321992212,8cyclictest0-21swapper/120:55:081
8321992210,1cyclictest0-21swapper/120:00:111
8320992219,3cyclictest6153-21apache221:12:190
8320992218,3cyclictest802-21apache222:40:590
8320992218,3cyclictest802-21apache219:28:590
8320992215,4cyclictest16637-21latency19:30:060
8320992210,8cyclictest22011-21diskmemload22:23:050
2418922210,0sleep00-21swapper/022:37:380
832199219,6cyclictest31421-21apache_volume20:10:011
832199218,1cyclictest0-21swapper/121:53:541
832199211,9cyclictest21009-21runrttasks00:00:071
8321992110,6cyclictest0-21swapper/123:31:581
8321992110,6cyclictest0-21swapper/123:06:281
8321992110,5cyclictest599-21avahi-daemon22:54:561
8321992110,5cyclictest0-21swapper/123:15:101
8321992110,1cyclictest0-21swapper/121:44:521
832099215,7cyclictest0-21swapper/023:15:020
832099214,8cyclictest0-21swapper/021:20:000
8320992117,4cyclictest947-21sendmail-mta20:25:160
8320992110,9cyclictest0-21swapper/023:51:220
2502422110,0sleep10-21swapper/121:12:591
832199203,15cyclictest0-21swapper/122:20:051
8321992018,1cyclictest6149-21apache222:19:181
8321992010,6cyclictest0-21swapper/120:25:031
8321992010,6cyclictest0-21swapper/119:20:001
8321992010,5cyclictest0-21swapper/123:55:001
8321992010,5cyclictest0-21swapper/123:39:081
8321992010,4cyclictest0-21swapper/122:30:031
8321992010,2cyclictest0-21swapper/123:01:171
8321992010,2cyclictest0-21swapper/120:45:111
8321992010,2cyclictest0-21swapper/119:15:041
832099209,10cyclictest11378-21ssh23:04:140
832099205,12cyclictest0-21swapper/022:25:000
832099205,10cyclictest0-21swapper/020:30:030
8320992019,1cyclictest6149-21apache200:07:230
8320992010,4cyclictest0-21swapper/022:10:020
8320992010,4cyclictest0-21swapper/021:05:060
8320992010,3cyclictest0-21swapper/022:55:320
8320992010,1cyclictest0-21swapper/021:39:200
312122010,0sleep10-21swapper/121:26:101
1518022010,0sleep10-21swapper/123:52:251
1466922010,0sleep00-21swapper/021:41:170
832199196,5cyclictest0-21swapper/122:25:291
832199194,11cyclictest0-21swapper/120:40:011
832199194,10cyclictest0-21swapper/120:05:021
8321991914,4cyclictest100150irq/106-eth1-rx19:25:031
832199191,13cyclictest0-21swapper/100:30:101
8321991910,9cyclictest0-21swapper/122:11:151
8321991910,6cyclictest0-21swapper/100:37:061
8321991910,6cyclictest0-21swapper/100:37:061
8321991910,4cyclictest0-21swapper/119:45:061
8321991910,3cyclictest0-21swapper/121:40:021
832199190,8cyclictest20474-21/usr/sbin/munin21:05:021
832099195,12cyclictest0-21swapper/021:55:040
832099192,8cyclictest0-21swapper/020:35:050
8320991918,1cyclictest802-21apache222:49:510
8320991918,1cyclictest6153-21apache221:18:450
8320991915,1cyclictest81ktimersoftd/000:25:560
8320991912,5cyclictest5568-21fschecks_time21:30:040
8320991910,8cyclictest167-21systemd-journal19:49:500
8320991910,5cyclictest0-21swapper/023:23:430
8320991910,4cyclictest0-21swapper/020:10:010
8320991910,3cyclictest0-21swapper/023:40:110
8320991910,3cyclictest0-21swapper/022:44:560
8320991910,2cyclictest0-21swapper/022:05:010
8320991910,2cyclictest0-21swapper/000:32:050
2003921910,0sleep00-21swapper/021:04:270
832199186,7cyclictest3237-21fw_packets20:20:021
832199182,13cyclictest0-21swapper/122:45:041
8321991812,4cyclictest22011-21diskmemload00:28:311
8321991810,5cyclictest0-21swapper/122:40:051
8321991810,4cyclictest0-21swapper/123:20:011
8321991810,3cyclictest0-21swapper/123:25:021
832099183,9cyclictest0-21swapper/019:10:090
832099183,9cyclictest0-21swapper/019:10:090
8320991815,1cyclictest744-21snmpd20:40:090
8320991814,3cyclictest100150irq/106-eth1-rx19:39:240
8320991813,1cyclictest0-21swapper/020:01:530
8320991810,5cyclictest0-21swapper/023:11:420
8320991810,4cyclictest0-21swapper/020:05:070
8320991810,3cyclictest0-21swapper/021:25:000
8320991810,3cyclictest0-21swapper/019:48:470
8320991810,2cyclictest0-21swapper/022:15:020
8320991810,0cyclictest0-21swapper/020:50:080
1233121810,0sleep10-21swapper/123:49:061
832199172,9cyclictest0-21swapper/119:50:301
8321991712,3cyclictest231ktimersoftd/120:50:081
8321991710,4cyclictest0-21swapper/121:35:051
832199170,13cyclictest0-21swapper/119:34:101
8320991713,1cyclictest8318-21cyclictest20:15:060
8320991710,4cyclictest0-21swapper/019:15:060
8320991710,3cyclictest0-21swapper/000:15:010
832199164,9cyclictest0-21swapper/119:40:001
8321991611,3cyclictest0-21swapper/119:36:051
832099165,7cyclictest0-21swapper/019:55:080
832099163,10cyclictest0-21swapper/020:55:060
8320991610,4cyclictest0-21swapper/019:40:040
8320991610,3cyclictest0-21swapper/019:21:170
1411121610,0sleep00-21swapper/020:47:490
832199151,7cyclictest0-21swapper/119:55:031
8321991410,1cyclictest19888-21runrttasks21:02:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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