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2026-08-30 - 18:07
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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 Sun Aug 30, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2804227361,7sleep00-21swapper/007:05:460
2820827058,8sleep10-21swapper/107:07:301
28438992910,8cyclictest0-21swapper/110:38:181
28437992927,1cyclictest22794-21/usr/sbin/munin10:58:180
2843899270,2cyclictest0-21swapper/111:42:531
28437992710,16cyclictest0-21swapper/011:51:300
28438992620,5cyclictest0-21swapper/107:18:121
28438992610,7cyclictest0-21swapper/110:44:351
28438992610,2cyclictest0-21swapper/111:52:241
28437992610,15cyclictest0-21swapper/010:09:450
2843899252,21cyclictest0-21swapper/109:55:531
2843799252,6cyclictest0-21swapper/009:40:110
28437992510,10cyclictest0-21swapper/009:27:020
28438992420,3cyclictest1199-21runrttasks10:35:391
28438992417,4cyclictest0-21swapper/111:02:171
28438992416,5cyclictest28435-21cyclictest09:34:011
28438992410,1cyclictest0-21swapper/112:27:401
2843899240,2cyclictest0-21swapper/112:03:411
2843799245,15cyclictest0-21swapper/011:07:320
2843799244,14cyclictest12643-21munin-run09:58:010
2843799243,8cyclictest0-21swapper/011:28:200
28437992424,0cyclictest0-21swapper/010:04:140
28437992419,3cyclictest5890-21apache209:15:530
28437992410,8cyclictest0-21swapper/009:35:530
28437992410,0cyclictest0-21swapper/012:26:070
793122310,0sleep10-21swapper/112:10:491
28438992318,4cyclictest12656-21ssh12:18:141
28438992317,4cyclictest5863-21apache212:30:551
28438992316,5cyclictest18236-21ssh10:04:351
28438992310,6cyclictest0-21swapper/108:23:191
28438992310,3cyclictest0-21swapper/108:43:141
28437992317,4cyclictest5890-21apache209:18:050
28437992310,6cyclictest0-21swapper/012:03:050
28437992310,12cyclictest0-21swapper/011:44:210
28438992217,2cyclictest7479-21grep08:58:211
2843899221,2cyclictest30445-21df10:23:141
28438992210,5cyclictest0-21swapper/112:17:391
28438992210,3cyclictest0-21swapper/110:50:061
2843799223,12cyclictest0-21swapper/010:45:360
28437992212,5cyclictest0-21swapper/010:48:580
28437992210,1cyclictest0-21swapper/010:23:310
28437992210,11cyclictest0-21swapper/007:38:210
28437992210,11cyclictest0-21swapper/007:13:170
2843799220,10cyclictest0-21swapper/010:13:120
2843899214,11cyclictest0-21swapper/109:38:161
28438992117,2cyclictest5890-21apache209:30:561
28438992111,7cyclictest5863-21apache209:51:061
2843899211,16cyclictest0-21swapper/110:13:571
28438992110,4cyclictest0-21swapper/111:29:481
28438992110,4cyclictest0-21swapper/107:08:191
28438992110,2cyclictest100350irq/108-eth1-tx10:56:491
2843799219,10cyclictest32085-21grep11:58:190
2843799217,7cyclictest7076-21apache_volume11:23:120
2843799215,11cyclictest5863-21apache209:10:040
28437992111,5cyclictest0-21swapper/010:28:140
28437992110,4cyclictest0-21swapper/012:09:380
28437992110,3cyclictest0-21swapper/008:37:110
2843799210,5cyclictest0-21swapper/009:58:590
285122010,0sleep10-21swapper/111:16:521
2843899206,8cyclictest0-21swapper/110:18:201
2843899205,8cyclictest0-21swapper/108:33:171
2843899204,4cyclictest13905-21/usr/sbin/munin09:58:211
28438992015,3cyclictest802-21apache207:24:431
28438992015,0cyclictest0-21swapper/111:43:121
28438992011,5cyclictest0-21swapper/111:23:151
2843899201,12cyclictest0-21swapper/107:33:151
28438992010,6cyclictest0-21swapper/110:28:131
28438992010,4cyclictest0-21swapper/111:33:151
28438992010,1cyclictest0-21swapper/107:28:191
2843799206,8cyclictest0-21swapper/011:18:190
2843799204,9cyclictest508-21/usr/sbin/munin07:18:160
2843799202,6cyclictest167-21systemd-journal08:27:560
28437992019,1cyclictest5890-21apache210:21:220
28437992016,3cyclictest802-21apache208:02:000
28437992016,3cyclictest599-21avahi-daemon12:15:120
28437992010,4cyclictest0-21swapper/009:29:390
2843799200,1cyclictest0-21swapper/009:03:140
2843899199,7cyclictest100150irq/106-eth1-rx08:48:121
2843899194,9cyclictest0-21swapper/112:33:201
2843899194,9cyclictest0-21swapper/108:28:211
2843899193,8cyclictest0-21swapper/108:08:161
2843899192,12cyclictest0-21swapper/109:13:121
2843899192,11cyclictest0-21swapper/107:13:141
28438991918,1cyclictest5863-21apache207:38:331
28438991910,6cyclictest0-21swapper/112:02:161
28438991910,3cyclictest0-21swapper/109:43:181
2843899190,8cyclictest21662-21ssh09:23:191
2843899190,3cyclictest28464-21kworker/u4:211:09:551
2843899190,10cyclictest3894-21/usr/sbin/munin11:18:131
2843899190,10cyclictest0-21swapper/111:53:191
2843799194,8cyclictest28584-21ntp_states11:53:180
2843799194,8cyclictest0-21swapper/008:43:200
28437991916,2cyclictest100150irq/106-eth1-rx07:36:090
28437991916,0cyclictest0-21swapper/009:51:080
28437991910,6cyclictest0-21swapper/010:38:130
28437991910,2cyclictest0-21swapper/007:48:110
2300221910,0sleep10-21swapper/110:12:461
564921810,0sleep00-21swapper/008:54:030
3264321810,0sleep10-21swapper/108:42:381
2843899187,6cyclictest0-21swapper/109:19:161
2843899183,11cyclictest0-21swapper/108:53:131
2843899182,2cyclictest10467-21sshd09:08:151
28438991810,5cyclictest0-21swapper/108:23:011
28438991810,2cyclictest0-21swapper/111:06:191
28438991810,2cyclictest0-21swapper/107:43:141
2843799189,7cyclictest30946-21apache_accesses08:38:130
2843799187,9cyclictest9951-21diskmemload11:08:140
2843799186,4cyclictest19549-21cstates08:08:130
2843799183,5cyclictest24347-21ls08:18:200
2843799182,9cyclictest0-21swapper/010:33:120
2843799182,5cyclictest0-21swapper/012:18:120
2843799182,10cyclictest0-21swapper/009:43:150
28437991817,0cyclictest0-21swapper/008:03:170
28437991816,1cyclictest13899-21/usr/sbin/munin11:33:160
28437991813,3cyclictest1199-21runrttasks07:44:350
2843799180,6cyclictest9951-21diskmemload11:13:160
2843899175,6cyclictest0-21swapper/107:48:121
2843899175,5cyclictest0-21swapper/107:58:151
2843899173,9cyclictest0-21swapper/108:05:261
2843899170,10cyclictest0-21swapper/108:13:161
2843799172,8cyclictest0-21swapper/008:48:200
28437991716,1cyclictest2523-21ls07:23:190
28437991711,3cyclictest0-21swapper/012:28:130
28437991710,2cyclictest0-21swapper/007:28:140
28437991710,1cyclictest0-21swapper/008:33:010
1740421710,0sleep00-21swapper/011:38:130
2843799161,8cyclictest14506-21grep07:53:200
28437991614,1cyclictest0-21swapper/010:54:070
28437991610,3cyclictest0-21swapper/007:08:220
28438991510,4cyclictest0-21swapper/107:53:131
2843799156,5cyclictest7035-21/usr/sbin/munin08:58:180
28437991510,1cyclictest0-21swapper/008:13:110
28438991410,3cyclictest0-21swapper/109:05:051
28437991410,3cyclictest0-21swapper/012:33:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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