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2025-12-09 - 06:46
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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 Tue Dec 09, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2091226854,9sleep10-21swapper/119:04:501
1933226754,8sleep00-21swapper/019:01:440
91702610,1sleep10-21swapper/121:14:511
21266993310,22cyclictest0-21swapper/022:40:570
21266993010,2cyclictest0-21swapper/000:11:440
21266993010,15cyclictest0-21swapper/023:17:230
2126799290,0cyclictest0-21swapper/121:48:211
21267992810,1cyclictest0-21swapper/121:17:281
21266992820,5cyclictest5337-21apache222:46:120
21266992811,12cyclictest97950irq/108-eth1-tx21:57:000
2126699280,27cyclictest103450irq/104-eth321:22:520
2126799272,1cyclictest0-21swapper/123:21:341
21266992710,0cyclictest0-21swapper/023:33:280
21267992622,3cyclictest19194-21sshd20:23:391
21266992621,4cyclictest5353-21apache223:53:330
21267992522,2cyclictest5353-21apache222:31:331
21267992510,10cyclictest0-21swapper/100:27:431
21266992524,1cyclictest0-21swapper/019:37:340
21266992523,1cyclictest15581-21ssh22:07:120
21266992520,2cyclictest1111-21runrttasks21:42:170
21266992511,7cyclictest0-21swapper/000:02:530
21266992410,8cyclictest0-21swapper/021:17:010
21266992410,3cyclictest0-21swapper/021:51:500
2126699240,23cyclictest0-21swapper/020:05:380
21267992312,7cyclictest17554-21kworker/u4:000:00:311
2126799230,3cyclictest0-21swapper/123:24:271
2126799230,11cyclictest0-21swapper/120:42:001
2126699232,20cyclictest0-21swapper/023:02:330
21266992317,5cyclictest21958-21ssh22:16:550
21266992310,9cyclictest0-21swapper/020:41:580
21266992310,8cyclictest0-21swapper/023:38:220
21266992310,1cyclictest0-21swapper/021:27:550
2126699230,17cyclictest0-21swapper/023:57:510
2126799225,12cyclictest0-21swapper/122:32:031
2126799224,13cyclictest0-21swapper/122:46:541
21267992213,7cyclictest10350-21latency_hist22:01:391
2126699224,8cyclictest23075-21kworker/u4:222:51:320
2126699222,3cyclictest0-21swapper/000:19:250
21266992221,1cyclictest0-21swapper/019:16:560
21266992220,2cyclictest5353-21apache222:04:050
21266992217,3cyclictest636-21nscd23:21:570
21266992212,4cyclictest0-21swapper/019:57:010
21266992210,7cyclictest0-21swapper/021:09:050
21267992116,4cyclictest5337-21apache222:40:401
21267992115,3cyclictest817-21apache222:46:121
21267992114,4cyclictest5337-21apache223:44:321
21267992112,5cyclictest5337-21apache221:35:041
2126799211,19cyclictest18629-21/usr/sbin/munin22:56:551
21267992111,6cyclictest0-21swapper/120:51:571
21267992110,3cyclictest0-21swapper/122:51:591
2126699213,11cyclictest0-21swapper/022:56:490
2126699212,10cyclictest21844-21latency21:31:570
21266992121,0cyclictest0-21swapper/022:32:320
21266992110,5cyclictest0-21swapper/023:09:480
3126722010,0sleep00-21swapper/023:15:090
2126799205,7cyclictest29691-21python23:12:001
2126799204,9cyclictest0-21swapper/119:16:581
2126799204,8cyclictest0-21swapper/122:06:511
21267992020,0cyclictest0-21swapper/100:25:041
2126799201,1cyclictest0-21swapper/123:09:201
2126799201,12cyclictest2460-21diskmemload22:16:401
21267992010,6cyclictest0-21swapper/123:31:591
21267992010,6cyclictest0-21swapper/123:26:551
21267992010,6cyclictest0-21swapper/100:04:451
21267992010,5cyclictest0-21swapper/100:06:581
21267992010,3cyclictest0-21swapper/120:31:521
21267992010,10cyclictest0-21swapper/123:50:251
2126799200,6cyclictest0-21swapper/119:06:531
2126699202,7cyclictest0-21swapper/023:44:150
21266992019,1cyclictest0-21swapper/020:11:340
21266992014,2cyclictest0-21swapper/022:53:400
21266992010,6cyclictest0-21swapper/022:14:240
21266992010,5cyclictest0-21swapper/021:02:050
21266992010,4cyclictest0-21swapper/021:11:570
21266992010,4cyclictest0-21swapper/020:51:380
21266992010,3cyclictest0-21swapper/000:31:560
21266992010,2cyclictest0-21swapper/020:21:530
2126699200,12cyclictest0-21swapper/019:41:500
2026622010,0sleep00-21swapper/000:30:170
2480021910,0sleep10-21swapper/120:37:021
2298721910,0sleep10-21swapper/123:02:341
2126799199,4cyclictest97750irq/106-eth1-rx19:31:501
2126799194,11cyclictest0-21swapper/119:26:581
2126799194,10cyclictest0-21swapper/120:08:551
21267991910,5cyclictest0-21swapper/123:36:561
21267991910,5cyclictest0-21swapper/122:24:121
2126799190,8cyclictest0-21swapper/120:01:531
2126799190,1cyclictest0-21swapper/121:08:281
21266991917,1cyclictest1111-21runrttasks20:30:530
21266991917,1cyclictest0-21swapper/023:30:090
21266991915,3cyclictest5353-21apache219:51:510
2126699191,15cyclictest25338-21perl21:36:530
2126699191,10cyclictest0-21swapper/023:46:540
21266991910,5cyclictest0-21swapper/020:56:570
21266991910,4cyclictest0-21swapper/020:11:590
21266991910,2cyclictest0-21swapper/020:31:490
2126799187,10cyclictest0-21swapper/119:36:511
2126799185,7cyclictest28353-21munin-run23:56:391
2126799185,6cyclictest2460-21diskmemload21:21:481
2126799184,9cyclictest0-21swapper/119:51:511
2126799184,8cyclictest2460-21diskmemload21:30:411
21267991818,0cyclictest0-21swapper/119:56:541
21267991817,0cyclictest0-21swapper/122:11:531
21267991812,1cyclictest12554-21ssh00:19:191
2126799181,12cyclictest0-21swapper/121:41:591
21267991810,5cyclictest0-21swapper/122:03:361
21267991810,3cyclictest0-21swapper/121:36:511
21267991810,3cyclictest0-21swapper/120:46:551
21267991810,3cyclictest0-21swapper/119:48:001
21267991810,1cyclictest0-21swapper/100:13:361
21267991810,0cyclictest0-21swapper/121:54:541
2126699182,8cyclictest0-21swapper/022:21:570
21266991810,4cyclictest0-21swapper/022:26:540
2126799177,5cyclictest27739-21ls19:21:551
21267991715,1cyclictest5337-21apache200:34:081
21267991710,4cyclictest97750irq/106-eth1-rx19:46:131
21267991710,3cyclictest0-21swapper/119:11:571
2126699176,7cyclictest0-21swapper/020:52:000
2126699173,7cyclictest0-21swapper/019:11:530
2126699173,7cyclictest0-21swapper/019:06:540
2126699173,4cyclictest0-21swapper/019:31:520
21266991711,5cyclictest24038-21kworker/0:021:48:280
21266991710,4cyclictest0-21swapper/020:19:550
21266991710,4cyclictest0-21swapper/019:21:440
21266991710,4cyclictest0-21swapper/000:11:320
21266991710,3cyclictest0-21swapper/019:29:420
21266991710,0cyclictest0-21swapper/000:21:520
2126699170,10cyclictest25162-21taskset20:40:460
2112221710,0sleep10-21swapper/120:28:471
1523421710,1sleep10-21swapper/120:12:311
2126799162,8cyclictest0-21swapper/121:01:531
1754221610,0sleep10-21swapper/120:21:241
2126799154,7cyclictest0-21swapper/120:56:541
21266991410,1cyclictest0-21swapper/019:46:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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