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2026-04-29 - 15:22
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack1slot2.osadl.org (updated Wed Apr 29, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2848224435,0sleep10-21swapper/107:17:151
2869023928,0sleep30-21swapper/307:19:373
2853923524,0sleep00-21swapper/007:17:540
2880023425,0sleep20-21swapper/207:20:562
289189993,0cyclictest12485-21awk09:41:420
289189993,0cyclictest10731-21awk11:51:410
289189983,0cyclictest3524-21snmpd07:25:580
289189983,0cyclictest30913-21sadc12:41:260
289189980,0cyclictest13542-21kthreadcore08:36:440
289189975,0cyclictest0-21swapper/011:34:210
289189973,0cyclictest3571-21lldpd09:09:150
289189973,0cyclictest19439-21awk07:36:420
289189972,0cyclictest12551-21awk08:16:420
289189971,0cyclictest0-21swapper/010:56:260
289189970,0cyclictest0-21swapper/012:08:060
289189970,0cyclictest0-21swapper/009:50:560
339960,0migration/37156-21munin-node11:46:483
339960,0migration/36016-21sh11:27:453
339960,0migration/332642-21sh11:45:043
339960,0migration/323523-21sh10:23:473
329960,0watchdog/31072-21sh09:34:013
29805060,0irq/28-eth0-rx-9359-21cut09:56:443
29805060,0irq/28-eth0-rx-8733-21iostat_ios10:16:433
29805060,0irq/28-eth0-rx-8513-21perl11:31:393
29805060,0irq/28-eth0-rx-6688-21iostat11:11:413
29805060,0irq/28-eth0-rx-18076-21ntp_states10:56:463
289199964,0cyclictest0-21swapper/110:06:441
289189962,0cyclictest6242-21kthreadcore09:36:440
289189962,0cyclictest32081-21grep07:41:480
289189962,0cyclictest23660-21awk10:06:430
289189962,0cyclictest1936-21awk09:16:410
289189960,0cyclictest0-21swapper/009:13:120
289189960,0cyclictest0-21swapper/008:53:080
289189960,0cyclictest0-21swapper/008:53:080
289189960,0cyclictest0-21swapper/007:26:490
259960,0migration/26254-21sh11:28:252
4150,0ktimersoftd/00-21swapper/011:02:020
4150,0ktimersoftd/00-21swapper/010:48:570
339950,0migration/39371-21runrttasks09:37:163
339950,0migration/37360-21kthreadcore07:26:443
339950,0migration/36211-21kthreadcore08:56:423
339950,0migration/332281-21if_eth010:11:413
339950,0migration/331276-21kthreadcore08:51:423
339950,0migration/331276-21kthreadcore08:51:423
339950,0migration/32912-21rt-features07:21:463
339950,0migration/328414-21pmu-power08:46:463
339950,0migration/328172-21kthreadcore09:11:433
339950,0migration/324072-21sh09:27:553
339950,0migration/322328-21kthreadcore10:41:443
339950,0migration/322229-21aten_r1power_po08:01:363
339950,0migration/320007-21kthreadcore11:36:443
339950,0migration/317800-21missed_timers12:11:453
339950,0migration/315126-21kthreadcore07:31:423
339950,0migration/314160-21sendmail_mailtr08:36:473
339950,0migration/313578-21kthreadcore09:01:423
329950,0watchdog/326943-21munin-node12:01:373
329950,0watchdog/321448-21cat12:16:413
329950,0watchdog/319975-21kthreadcore07:36:443
329950,0watchdog/31853-21cut08:06:443
329950,0watchdog/316086-21kthreadcore08:16:443
29815050,0irq/29-eth0-tx-7911-21diskmemload11:47:392
29815050,0irq/29-eth0-tx-7911-21diskmemload09:44:072
29815050,0irq/29-eth0-tx-533-21ssh10:46:442
29815050,0irq/29-eth0-tx-27091-21ssh09:47:112
29815050,0irq/29-eth0-tx-10465-21ssh10:53:022
29815050,0irq/29-eth0-tx-0-21swapper/212:21:512
29815050,0irq/29-eth0-tx-0-21swapper/212:19:242
29815050,0irq/29-eth0-tx-0-21swapper/212:14:372
29815050,0irq/29-eth0-tx-0-21swapper/211:06:442
29815050,0irq/29-eth0-tx-0-21swapper/211:05:012
29815050,0irq/29-eth0-tx-0-21swapper/210:32:022
29815050,0irq/29-eth0-tx-0-21swapper/209:53:122
29805050,0irq/28-eth0-rx-7961-21diskstats12:46:393
29805050,0irq/28-eth0-rx-5583-21cat12:06:443
29805050,0irq/28-eth0-rx-5407-21kthreadcore10:51:433
29805050,0irq/28-eth0-rx-31068-21python10:26:483
29805050,0irq/28-eth0-rx-30999-21grep11:06:433
29805050,0irq/28-eth0-rx-30032-21if_err_eth1.209:51:413
29805050,0irq/28-eth0-rx-22508-21cut08:21:433
29805050,0irq/28-eth0-rx-19464-21if_eth1.311:56:423
29805050,0irq/28-eth0-rx-16301-21cut11:16:433
29805050,0irq/28-eth0-rx-15180-21irqcore12:31:443
29805050,0irq/28-eth0-rx-0-21swapper/312:43:253
29805050,0irq/28-eth0-rx-0-21swapper/311:51:403
29805050,0irq/28-eth0-rx-0-21swapper/311:21:423
29805050,0irq/28-eth0-rx-0-21swapper/311:04:063
29805050,0irq/28-eth0-rx-0-21swapper/310:46:533
29805050,0irq/28-eth0-rx-0-21swapper/310:36:523
29805050,0irq/28-eth0-rx-0-21swapper/310:31:433
29805050,0irq/28-eth0-rx-0-21swapper/309:48:043
29805050,0irq/28-eth0-rx-0-21swapper/309:41:443
289239955,0cyclictest0-21swapper/212:26:432
289239954,0cyclictest0-21swapper/208:21:432
289239950,0cyclictest0-21swapper/212:01:482
289199950,0cyclictest0-21swapper/111:12:471
289189955,0cyclictest0-21swapper/012:46:430
289189955,0cyclictest0-21swapper/010:40:550
289189954,0cyclictest0-21swapper/011:18:540
289189953,0cyclictest0-21swapper/008:35:440
289189952,0cyclictest3571-21lldpd12:01:160
289189950,0cyclictest29537-21diskmemload11:22:030
289189950,0cyclictest0-21swapper/011:40:490
289189950,0cyclictest0-21swapper/010:24:020
289189950,0cyclictest0-21swapper/009:56:180
289189950,0cyclictest0-21swapper/009:21:360
259950,0migration/28989-21irqrtprio12:46:432
259950,0migration/26275-21kthreadcore12:06:442
259950,0migration/231692-21kthreadcore07:21:422
259950,0migration/231309-21munin-node10:11:382
259950,0migration/229793-21sh12:38:202
259950,0migration/224763-21sh11:41:292
259950,0migration/218299-21runrttasks08:19:572
259950,0migration/214179-21munin-node08:36:482
249950,0watchdog/217239-21idleruntime11:36:412
179950,0migration/18285-21kthreadcore12:06:451
179950,0migration/131668-21kthreadcore08:51:421
179950,0migration/131668-21kthreadcore08:51:421
179950,0migration/129114-21timerwakeupswit12:36:541
179950,0migration/12059-21kthreadcore12:21:441
179950,0migration/113381-21latency10:16:451
8305040,0irq/26-0000:00:0-21swapper/308:31:263
8305040,0irq/26-0000:00:0-21swapper/210:36:432
339940,0migration/32306-21irqrtprio09:16:423
339940,0migration/320643-21kthreadcore08:41:433
329940,0watchdog/3298050irq/28-eth0-rx-07:51:443
329940,0watchdog/328742-21processes10:06:493
329940,0watchdog/323029-21awk12:36:413
329940,0watchdog/30-21swapper/310:01:413
329940,0watchdog/30-21swapper/308:26:363
329940,0watchdog/30-21swapper/308:11:363
29815040,0irq/29-eth0-tx-18332-21munin-node10:41:392
29815040,0irq/29-eth0-tx-14192-21ssh10:16:542
29815040,0irq/29-eth0-tx-0-21swapper/212:41:282
29815040,0irq/29-eth0-tx-0-21swapper/211:56:312
29815040,0irq/29-eth0-tx-0-21swapper/211:51:372
29815040,0irq/29-eth0-tx-0-21swapper/211:31:372
29815040,0irq/29-eth0-tx-0-21swapper/211:21:312
29815040,0irq/29-eth0-tx-0-21swapper/211:18:262
29815040,0irq/29-eth0-tx-0-21swapper/210:56:382
29815040,0irq/29-eth0-tx-0-21swapper/210:26:432
29815040,0irq/29-eth0-tx-0-21swapper/210:06:362
29815040,0irq/29-eth0-tx-0-21swapper/210:01:452
29815040,0irq/29-eth0-tx-0-21swapper/209:56:382
29815040,0irq/29-eth0-tx-0-21swapper/209:36:422
29815040,0irq/29-eth0-tx-0-21swapper/209:31:362
29815040,0irq/29-eth0-tx-0-21swapper/209:28:302
29805040,0irq/28-eth0-rx-19475-21fschecks_count09:06:403
29805040,0irq/28-eth0-rx-19265-21kthreadcore07:56:433
29805040,0irq/28-eth0-rx-0-21swapper/312:26:423
29805040,0irq/28-eth0-rx-0-21swapper/312:24:573
29805040,0irq/28-eth0-rx-0-21swapper/309:23:273
289239944,0cyclictest0-21swapper/207:31:442
289239943,0cyclictest7510-21sadc07:51:252
289239943,0cyclictest3571-21lldpd08:57:442
289239943,0cyclictest3571-21lldpd08:53:442
289239943,0cyclictest3571-21lldpd08:53:442
289239943,0cyclictest3571-21lldpd08:34:142
289239943,0cyclictest3524-21snmpd09:16:302
289239943,0cyclictest30385-21awk08:06:422
289239943,0cyclictest27087-21awk09:11:412
289239943,0cyclictest16078-21awk07:56:412
289239943,0cyclictest12722-21awk09:01:412
289239940,0cyclictest5455-21munin-node11:11:462
289199943,0cyclictest9232-21awk09:21:411
289199943,0cyclictest3571-21lldpd11:51:461
289199943,0cyclictest3571-21lldpd10:58:451
289199943,0cyclictest3571-21lldpd10:44:451
289199943,0cyclictest3524-21snmpd11:18:161
289199943,0cyclictest3524-21snmpd11:09:461
289199943,0cyclictest32228-21awk10:11:411
289199943,0cyclictest23255-21awk08:01:401
289199943,0cyclictest12461-21awk09:41:421
289199943,0cyclictest10769-21awk10:36:411
289199940,0cyclictest0-21swapper/112:33:021
289189944,0cyclictest0-21swapper/010:59:020
289189944,0cyclictest0-21swapper/010:13:290
289189944,0cyclictest0-21swapper/008:46:270
289189943,0cyclictest401-21sadc08:31:260
289189943,0cyclictest3571-21lldpd11:26:450
289189943,0cyclictest3571-21lldpd11:14:150
289189943,0cyclictest3571-21lldpd09:31:440
289189943,0cyclictest3571-21lldpd09:29:150
289189943,0cyclictest3571-21lldpd07:59:430
289189943,0cyclictest3524-21snmpd12:43:470
289189943,0cyclictest3524-21snmpd12:29:170
289189943,0cyclictest3524-21snmpd11:44:460
289189943,0cyclictest3524-21snmpd09:59:150
289189943,0cyclictest25932-21awk10:26:420
289189943,0cyclictest1464-21awk07:46:380
289189943,0cyclictest12908-21awk12:11:410
289189943,0cyclictest12277-21awk07:31:390
259940,0migration/23998-21taskset07:26:342
259940,0migration/225302-21kthreadcore08:46:422
259940,0migration/219139-21kthreadcore08:41:432
259940,0migration/217304-21kthreadcore12:31:452
259940,0migration/216029-21latency_hist10:21:262
259940,0migration/214469-21munin-node09:21:492
259940,0migration/213537-21latency07:51:442
249940,0watchdog/220086-21kthreadcore07:36:442
249940,0watchdog/20-21swapper/208:26:362
19140,0ktimersoftd/10-21swapper/109:48:261
179940,0migration/17929-21ksmtuned11:47:201
179940,0migration/17269-21kthreadcore08:11:431
179940,0migration/17266-21kthreadcore08:56:431
179940,0migration/14775-21kthreadcore08:31:421
179940,0migration/13635-21kthreadcore12:41:451
179940,0migration/132708-21irqcore11:26:441
179940,0migration/132693-21kthreadcore07:21:421
179940,0migration/13227-21taskset10:51:341
179940,0migration/130261-21kthreadcore11:41:431
179940,0migration/130239-21taskset11:24:031
179940,0migration/12874-21missed_timers08:06:451
179940,0migration/127991-21hwlatdetect10:46:401
179940,0migration/124530-21dump-pmu-power11:41:261
179940,0migration/124300-21munin-node11:56:451
179940,0migration/123702-21kthreadcore11:01:461
179940,0migration/122214-21kthreadcore08:21:431
179940,0migration/121486-21taskset10:04:141
179940,0migration/120950-21fschecks_count12:16:401
179940,0migration/120856-21kthreadcore09:06:431
179940,0migration/120671-21kthreadcore07:36:441
179940,0migration/120387-21kthreadcore08:41:431
179940,0migration/119744-21kthreadcore09:26:431
179940,0migration/117305-21kthreadcore07:56:421
179940,0migration/116733-21fschecks_count10:21:401
179940,0migration/115498-21taskset11:35:121
179940,0migration/113666-21latency_hist10:01:251
179940,0migration/113359-21sh12:30:321
179940,0migration/112377-21fschecks_count12:11:391
169940,0watchdog/18540-21munin-node12:46:411
169940,0watchdog/125948-21basename08:26:361
169940,0watchdog/12508-21munin-node09:51:451
169940,0watchdog/124787-21aten2.4-expect10:26:371
169940,0watchdog/117670-21sensors_temp08:16:481
169940,0watchdog/110392-21ssh09:39:531
169940,0watchdog/10-21swapper/109:36:251
8305030,0irq/26-0000:00:0-21swapper/307:41:263
329930,0watchdog/30-21swapper/307:46:443
29815030,0irq/29-eth0-tx-0-21swapper/008:21:410
289239932,0cyclictest25786-21crond09:11:262
289239932,0cyclictest23190-21awk08:01:402
289239930,0cyclictest26364-21perl07:41:372
289199933,0cyclictest3571-21lldpd07:49:431
289199932,0cyclictest3571-21lldpd09:16:451
289199932,0cyclictest3250-21irqbalance08:46:421
289199932,0cyclictest26705-21awk07:41:391
289199932,0cyclictest15335-21grep07:31:421
289189933,0cyclictest9417-21kworker/0:012:22:310
289189933,0cyclictest9417-21kworker/0:012:02:310
289189933,0cyclictest7129-21kworker/0:211:48:530
289189933,0cyclictest7129-21kworker/0:210:35:230
289189933,0cyclictest7129-21kworker/0:210:01:270
289189933,0cyclictest3571-21lldpd08:04:430
289189933,0cyclictest0-21swapper/012:18:210
289189932,0cyclictest9648-21kthreadcore08:56:430
289189932,0cyclictest6111-21kthreadcore08:11:420
289189932,0cyclictest29706-21grep11:06:390
289189932,0cyclictest23760-21kthreadcore10:41:450
289189932,0cyclictest15171-21munin-node08:41:370
289189932,0cyclictest15093-21awk12:31:430
289189932,0cyclictest14717-21latency_hist07:56:260
289189932,0cyclictest13801-21sensors10:16:490
289189930,0cyclictest12874-21munin-node09:01:420
289189930,0cyclictest0-21swapper/008:06:380
249930,0watchdog/20-21swapper/208:11:362
169930,0watchdog/10-21swapper/112:01:451
169930,0watchdog/10-21swapper/110:31:331
169930,0watchdog/10-21swapper/109:16:211
169930,0watchdog/10-21swapper/109:01:371
169930,0watchdog/10-21swapper/107:26:441
169920,0watchdog/10-21swapper/108:36:281
169920,0watchdog/10-21swapper/107:51:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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