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2026-04-19 - 17:23
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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 792 highest latencies:
System rack1slot2.osadl.org (updated Sun Apr 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2592424938,0sleep10-21swapper/107:17:561
2585423928,0sleep30-21swapper/307:17:103
2585823627,0sleep20-21swapper/207:17:132
2541023026,0sleep00-21swapper/007:15:590
262249970,0cyclictest0-21swapper/212:15:552
4160,0ktimersoftd/00-21swapper/007:50:570
35160,0ktimersoftd/30-21swapper/307:50:573
339960,0migration/39832-21kthreadcore10:35:553
339960,0migration/37849-21sh09:39:473
339960,0migration/34936-21munin-node10:15:503
339960,0migration/330167-21sh11:44:403
339960,0migration/317238-21sh12:13:583
339960,0migration/317233-21sh10:00:593
339960,0migration/316001-21kthreadcore08:40:563
339960,0migration/315812-21sh10:56:303
329960,0watchdog/327441-21irqcore11:05:513
29805060,0irq/28-eth0-rx-6373-21ntpq10:50:573
29805060,0irq/28-eth0-rx-1660-21tail12:05:513
29805060,0irq/28-eth0-rx-13933-21df_abs11:35:503
29805060,0irq/28-eth0-rx-10662-21sh11:14:483
29805060,0irq/28-eth0-rx-0-21swapper/310:28:153
27160,0ktimersoftd/20-21swapper/207:50:572
262249960,0cyclictest0-21swapper/212:39:152
262239965,0cyclictest26823-21sed09:10:541
262229960,0cyclictest0-21swapper/010:54:030
149960,0migration/06872-21idleruntime-cro11:50:370
149960,0migration/018175-21sh10:02:410
8305050,0irq/26-0000:00:19404-21crond08:45:352
339950,0migration/38668-21kthreadcore11:30:563
339950,0migration/34385-21sendmail_mailtr09:15:583
339950,0migration/33600-21kthreadcore11:45:563
339950,0migration/330906-21fschecks_time07:45:493
339950,0migration/330607-21ntp_offset12:00:583
339950,0migration/326611-21kthreadcore08:25:533
339950,0migration/325761-21kthreadcore09:10:533
339950,0migration/325660-21munin-node08:45:573
339950,0migration/32484-21munin-node08:10:513
339950,0migration/323747-21fschecks_time07:40:493
339950,0migration/323747-21fschecks_time07:40:493
339950,0migration/323722-21taskset11:59:213
339950,0migration/318132-21kthreadcore08:20:533
339950,0migration/318045-21kthreadcore09:25:543
339950,0migration/317599-21irqrtprio09:05:533
339950,0migration/315564-21taskset09:01:543
339950,0migration/313590-21runrttasks09:25:003
329950,0watchdog/34122-21ssh12:42:563
329950,0watchdog/330900-21grep10:10:513
329950,0watchdog/329514-21rm11:25:513
329950,0watchdog/318349-21if_err_eth1.309:45:513
329950,0watchdog/310339-21cat08:15:553
329950,0watchdog/30-21swapper/310:40:513
29815050,0irq/29-eth0-tx-0-21swapper/210:36:032
29805050,0irq/28-eth0-rx-9072sleep308:07:213
29805050,0irq/28-eth0-rx-4860-21kthreadcore09:55:553
29805050,0irq/28-eth0-rx-21612-21awk12:35:543
29805050,0irq/28-eth0-rx-20728-21sh10:05:533
29805050,0irq/28-eth0-rx-20448-21grep11:00:543
29805050,0irq/28-eth0-rx-0-21swapper/312:25:563
29805050,0irq/28-eth0-rx-0-21swapper/312:22:393
29805050,0irq/28-eth0-rx-0-21swapper/312:20:083
29805050,0irq/28-eth0-rx-0-21swapper/311:20:543
29805050,0irq/28-eth0-rx-0-21swapper/311:16:493
29805050,0irq/28-eth0-rx-0-21swapper/310:45:533
29805050,0irq/28-eth0-rx-0-21swapper/310:20:453
29805050,0irq/28-eth0-rx-0-21swapper/309:50:543
29805050,0irq/28-eth0-rx-0-21swapper/309:31:513
29805050,0irq/28-eth0-rx-0-21swapper/307:25:523
27150,0ktimersoftd/20-21swapper/212:49:302
262249955,0cyclictest0-21swapper/211:53:032
262249955,0cyclictest0-21swapper/211:36:202
262249955,0cyclictest0-21swapper/209:30:322
262249950,0cyclictest0-21swapper/212:05:492
262249950,0cyclictest0-21swapper/210:21:552
262249950,0cyclictest0-21swapper/210:01:352
262249950,0cyclictest0-21swapper/209:40:372
262239955,0cyclictest0-21swapper/108:56:041
262229955,0cyclictest16894-21kworker/0:009:21:090
262229955,0cyclictest16894-21kworker/0:009:15:430
262229955,0cyclictest16894-21kworker/0:009:10:370
262229955,0cyclictest16894-21kworker/0:009:05:410
262229955,0cyclictest16894-21kworker/0:009:00:490
262229955,0cyclictest16894-21kworker/0:008:55:430
262229955,0cyclictest16894-21kworker/0:008:50:430
262229955,0cyclictest16894-21kworker/0:008:45:590
262229955,0cyclictest16894-21kworker/0:008:40:530
262229955,0cyclictest16894-21kworker/0:008:35:410
262229955,0cyclictest16894-21kworker/0:008:30:370
262229955,0cyclictest16894-21kworker/0:008:25:510
262229955,0cyclictest15375-21kworker/0:208:20:450
262229955,0cyclictest15375-21kworker/0:208:15:370
262229955,0cyclictest15375-21kworker/0:208:10:390
262229955,0cyclictest15375-21kworker/0:208:05:410
262229955,0cyclictest15375-21kworker/0:208:00:590
262229955,0cyclictest15375-21kworker/0:207:56:030
262229955,0cyclictest15375-21kworker/0:207:45:430
262229955,0cyclictest15375-21kworker/0:207:40:390
262229955,0cyclictest15375-21kworker/0:207:40:390
262229955,0cyclictest15375-21kworker/0:207:30:370
262229955,0cyclictest15375-21kworker/0:207:25:510
262229955,0cyclictest15375-21kworker/0:207:20:370
262229955,0cyclictest0-21swapper/012:07:410
262229955,0cyclictest0-21swapper/011:14:330
249950,0watchdog/211489-21grep11:31:042
179950,0migration/16897-21latency_hist11:50:371
179950,0migration/1440-21kthreadcore10:30:541
179950,0migration/13854-21kthreadcore09:55:541
179950,0migration/131685-21kthreadcore08:50:531
179950,0migration/13104-21aten_r1power_fr12:25:501
179950,0migration/127729-21irqrtprio11:05:521
179950,0migration/11662-21kthreadcore09:35:541
179950,0migration/114465-21gltestperf11:35:511
179950,0migration/112960-21kthreadcore10:55:551
169950,0watchdog/123847-21kthreadcore10:05:551
149950,0migration/09572-21fschecks_time10:55:500
149950,0migration/0601-21taskset09:52:210
149950,0migration/029266-21kthreadcore12:20:540
149950,0migration/027086-21kthreadcore12:00:550
149950,0migration/026899-21taskset10:08:070
149950,0migration/026526-21kthreadcore09:30:530
149950,0migration/025167-21kthreadcore11:20:550
149950,0migration/023501-21sh11:58:450
149950,0migration/021779-21munin-node10:25:480
149950,0migration/021515-21latency07:35:530
149950,0migration/02148-21kthreadcore10:30:550
149950,0migration/018009-21kthreadcore09:25:540
149950,0migration/017972-21sh11:16:040
149950,0migration/015016-21taskset11:54:110
149950,0migration/011895-21munin-node12:30:480
8305040,0irq/26-0000:00:0-21swapper/207:35:552
339940,0migration/39408-21kthreadcore08:35:543
339940,0migration/314323-21diskmemload11:52:173
339940,0migration/311780-21taskset12:30:473
29815040,0irq/29-eth0-tx-5162-21diskmemload11:20:592
29815040,0irq/29-eth0-tx-4973-21ssh10:31:562
29815040,0irq/29-eth0-tx-32482-21sed09:51:012
29815040,0irq/29-eth0-tx-31912-21ssh09:35:442
29815040,0irq/29-eth0-tx-2457-21munin-node11:10:552
29815040,0irq/29-eth0-tx-0-21swapper/212:23:192
29815040,0irq/29-eth0-tx-0-21swapper/212:11:582
29815040,0irq/29-eth0-tx-0-21swapper/212:00:492
29815040,0irq/29-eth0-tx-0-21swapper/211:45:512
29815040,0irq/29-eth0-tx-0-21swapper/211:42:462
29815040,0irq/29-eth0-tx-0-21swapper/211:27:042
29815040,0irq/29-eth0-tx-0-21swapper/211:18:052
29815040,0irq/29-eth0-tx-0-21swapper/211:00:402
29815040,0irq/29-eth0-tx-0-21swapper/210:55:492
29815040,0irq/29-eth0-tx-0-21swapper/210:50:592
29815040,0irq/29-eth0-tx-0-21swapper/210:46:422
29815040,0irq/29-eth0-tx-0-21swapper/210:06:272
29815040,0irq/29-eth0-tx-0-21swapper/209:46:042
29805040,0irq/28-eth0-rx-14713-21python07:30:573
29805040,0irq/28-eth0-rx-0-21swapper/312:45:563
29805040,0irq/28-eth0-rx-0-21swapper/310:31:393
29805040,0irq/28-eth0-rx-0-21swapper/309:41:463
29805040,0irq/28-eth0-rx-0-21swapper/307:35:463
262249944,0cyclictest0-21swapper/210:25:422
262249943,0cyclictest9784-21awk08:15:532
262249943,0cyclictest9662-21awk07:30:512
262249943,0cyclictest3571-21lldpd08:31:092
262249943,0cyclictest3524-21snmpd12:41:362
262249943,0cyclictest3524-21snmpd12:27:352
262249943,0cyclictest3524-21snmpd09:21:342
262249943,0cyclictest3524-21snmpd09:07:042
262249943,0cyclictest3524-21snmpd08:54:192
262249943,0cyclictest3524-21snmpd08:29:332
262249943,0cyclictest3524-21snmpd08:20:482
262249943,0cyclictest3524-21snmpd08:05:032
262249943,0cyclictest3524-21snmpd07:46:332
262249943,0cyclictest3524-21snmpd07:43:332
262249943,0cyclictest3524-21snmpd07:43:332
262249943,0cyclictest27331-21awk11:05:512
262249943,0cyclictest2639-21awk08:10:512
262249943,0cyclictest24457-21awk09:10:522
262249943,0cyclictest24126-21awk09:30:502
262249943,0cyclictest20751-21awk08:45:522
262249943,0cyclictest16362-21awk10:40:532
262239944,0cyclictest0-21swapper/112:42:571
262239944,0cyclictest0-21swapper/112:01:571
262239943,0cyclictest5440-21awk10:15:521
262239943,0cyclictest3571-21lldpd12:05:411
262239943,0cyclictest3571-21lldpd11:55:421
262239943,0cyclictest3571-21lldpd11:17:421
262239943,0cyclictest3571-21lldpd11:11:411
262239943,0cyclictest3524-21snmpd11:01:351
262239943,0cyclictest2500-21awk08:10:511
262239943,0cyclictest24348-21awk08:25:511
262239943,0cyclictest19307-21awk12:15:521
262239943,0cyclictest17276-21awk09:05:521
262239943,0cyclictest17103-21awk08:20:521
262239943,0cyclictest1204-21sadc08:10:361
262239943,0cyclictest10559-21awk12:10:531
262229944,0cyclictest16894-21kworker/0:009:36:330
262229944,0cyclictest0-21swapper/011:01:470
262229943,0cyclictest3524-21snmpd11:41:200
262229943,0cyclictest3250-21irqbalance11:25:430
262229943,0cyclictest3250-21irqbalance09:55:530
262229943,0cyclictest3250-21irqbalance09:46:230
262229943,0cyclictest3250-21irqbalance09:40:530
262229943,0cyclictest30225-21awk12:40:540
262229943,0cyclictest11502-21sadc12:30:370
262229940,0cyclictest0-21swapper/010:17:310
259940,0migration/25330-21sh08:35:472
249940,0watchdog/22128-21munin-node09:55:512
249940,0watchdog/214884-21netstat09:00:552
249940,0watchdog/20-21swapper/211:55:562
249940,0watchdog/20-21swapper/210:17:312
249940,0watchdog/20-21swapper/208:55:592
179940,0migration/19718-21kthreadcore11:50:541
179940,0migration/13515-21kthreadcore08:30:551
179940,0migration/129152-21fschecks_count11:25:511
179940,0migration/128139-21kthreadcore09:50:531
179940,0migration/127752-21kthreadcore09:30:531
179940,0migration/125107-21kthreadcore07:40:521
179940,0migration/125107-21kthreadcore07:40:521
179940,0migration/123665-21kthreadcore12:35:551
179940,0migration/122429-21kthreadcore08:45:541
179940,0migration/120592-21kthreadcore09:45:531
179940,0migration/115035-21kthreadcore08:40:551
179940,0migration/113992-21kthreadcore12:30:541
179940,0migration/110457-21kthreadcore08:35:541
179940,0migration/110093-21kthreadcore10:35:551
169940,0watchdog/132706-21memory12:20:561
169940,0watchdog/122999-21perl11:40:521
169940,0watchdog/120934-1kworker/1:2H10:22:311
169940,0watchdog/117795-21kthreadcore07:55:551
169940,0watchdog/116201-21perl10:40:511
169940,0watchdog/115761-21chrt09:04:151
169940,0watchdog/115694-21ssh09:42:191
169940,0watchdog/113184-21ssh09:23:591
169940,0watchdog/10-21swapper/111:30:551
169940,0watchdog/10-21swapper/110:45:551
169940,0watchdog/10-21swapper/110:10:511
169940,0watchdog/10-21swapper/110:01:551
169940,0watchdog/10-21swapper/109:25:471
149940,0migration/025209-21irqcore10:45:540
149940,0migration/021619-21sensors_temp10:41:000
329930,0watchdog/317798-21kthreadcore07:55:553
329930,0watchdog/30-21swapper/308:55:593
329930,0watchdog/30-21swapper/308:30:593
329930,0watchdog/30-21swapper/307:20:513
29805030,0irq/28-eth0-rx-0-21swapper/308:50:463
29805030,0irq/28-eth0-rx-0-21swapper/308:02:423
262249932,0cyclictest3571-21lldpd09:15:392
262249932,0cyclictest0-21swapper/212:30:492
262249930,0cyclictest26695-21expr07:20:482
262239933,0cyclictest3571-21lldpd09:16:101
262239933,0cyclictest31260-21awk07:45:511
262239932,0cyclictest8276-21sadc07:30:361
262239932,0cyclictest3571-21lldpd12:46:421
262239932,0cyclictest3571-21lldpd11:23:111
262239932,0cyclictest3571-21lldpd07:35:101
262239932,0cyclictest27615-21awk07:20:511
262239932,0cyclictest24562-21kthreadcore10:25:541
262239932,0cyclictest21414-21kthreadcore08:00:531
262229933,0cyclictest5377-21kworker/0:110:35:440
262229933,0cyclictest4349-21kworker/0:112:45:420
262229933,0cyclictest2490-21kworker/0:012:35:400
262229933,0cyclictest2490-21kworker/0:012:15:400
262229933,0cyclictest2490-21kworker/0:012:10:500
262229933,0cyclictest2490-21kworker/0:011:35:440
262229933,0cyclictest2490-21kworker/0:011:30:400
262229933,0cyclictest16894-21kworker/0:010:10:370
262229932,0cyclictest18338-21kthreadcore10:20:540
262229930,0cyclictest26636-21diskstats11:05:480
259930,0migration/27490-21munin-node07:25:572
249930,0watchdog/226633-21munin-node08:05:472
249930,0watchdog/217796-21kthreadcore07:55:552
249930,0watchdog/20-21swapper/210:10:432
179930,0migration/115859-21aten2.4-expect07:35:461
169930,0watchdog/10-21swapper/110:50:511
169930,0watchdog/10-21swapper/108:15:551
262239920,0cyclictest0-21swapper/107:50:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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