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2026-04-09 - 20:42
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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 Thu Apr 09, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2541924736,0sleep00-21swapper/007:19:010
2532024637,0sleep20-21swapper/207:17:512
2513723928,0sleep30-21swapper/307:15:433
2541523627,0sleep10-21swapper/107:18:581
25559991515,0cyclictest3524-21snmpd07:49:052
255579999,0cyclictest3524-21snmpd11:04:440
339960,0migration/331876-21munin-node11:05:053
339960,0migration/324783-21kthreadcore08:25:043
339960,0migration/319748-21sh11:35:223
29815060,0irq/29-eth0-tx-9245-21ssh09:57:182
29815060,0irq/29-eth0-tx-31871-21idleruntime-cro10:49:472
29805060,0irq/28-eth0-rx-24317-21kthreadcore10:05:043
29805060,0irq/28-eth0-rx-19943-21sed09:25:113
29805060,0irq/28-eth0-rx-18661-21if_eth1.312:15:023
29805060,0irq/28-eth0-rx-10479-21awk11:30:053
255599960,0cyclictest0-21swapper/211:27:482
259960,0migration/217094-21sh10:59:542
149960,0migration/08059-21sh08:59:460
149960,0migration/07067-21sh10:51:350
149960,0migration/023536-21sh11:59:440
149960,0migration/012762-21timerandwakeup10:35:120
8305050,0irq/26-0000:00:0-21swapper/208:55:032
339950,0migration/34373-21latency_hist08:34:463
339950,0migration/34081-21kthreadcore11:10:053
339950,0migration/331322-21kthreadcore07:20:053
339950,0migration/33127-21kthreadcore08:10:043
339950,0migration/330254-21kthreadcore12:40:053
339950,0migration/325724-21ksmtuned08:47:093
339950,0migration/325289-21latency11:20:063
339950,0migration/324477-21gltestperf10:45:013
339950,0migration/314549-21switchtime09:00:113
339950,0migration/31382-21kthreadcore10:50:043
339950,0migration/312708-21kthreadcore10:00:013
339950,0migration/312699-21kthreadcore11:15:053
339950,0migration/311087-21rt-features09:20:083
339950,0migration/310939-21kthreadcore12:10:023
339950,0migration/310590-21missed_timers12:45:063
339950,0migration/310205-21kthreadcore10:35:043
329950,0watchdog/39042-21iostat_ios07:30:013
329950,0watchdog/322138-21ps09:06:093
329950,0watchdog/314905-21sh10:39:543
329950,0watchdog/30-21swapper/311:55:063
329950,0watchdog/30-21swapper/310:11:183
329950,0watchdog/30-21swapper/309:54:583
29815050,0irq/29-eth0-tx-7842-21munin-node07:29:580
29815050,0irq/29-eth0-tx-4980-21diskstats12:45:002
29815050,0irq/29-eth0-tx-29684-21munin-node08:29:590
29815050,0irq/29-eth0-tx-22208-21perl10:25:012
29815050,0irq/29-eth0-tx-0-21swapper/212:24:262
29815050,0irq/29-eth0-tx-0-21swapper/211:40:012
29815050,0irq/29-eth0-tx-0-21swapper/211:11:422
29815050,0irq/29-eth0-tx-0-21swapper/210:53:582
29815050,0irq/29-eth0-tx-0-21swapper/210:43:132
29815050,0irq/29-eth0-tx-0-21swapper/209:45:142
29815050,0irq/29-eth0-tx-0-21swapper/209:35:042
29815050,0irq/29-eth0-tx-0-21swapper/008:44:590
29815050,0irq/29-eth0-tx-0-21swapper/007:40:010
29805050,0irq/28-eth0-rx-9160-21ssh11:50:063
29805050,0irq/28-eth0-rx-3257-21cut08:55:033
29805050,0irq/28-eth0-rx-32230-21python08:05:153
29805050,0irq/28-eth0-rx-30340-21cat12:00:113
29805050,0irq/28-eth0-rx-26082-21cut10:25:053
29805050,0irq/28-eth0-rx-0-21swapper/312:27:563
29805050,0irq/28-eth0-rx-0-21swapper/312:20:043
29805050,0irq/28-eth0-rx-0-21swapper/312:06:133
29805050,0irq/28-eth0-rx-0-21swapper/311:41:403
29805050,0irq/28-eth0-rx-0-21swapper/311:26:033
29805050,0irq/28-eth0-rx-0-21swapper/310:29:483
29805050,0irq/28-eth0-rx-0-21swapper/309:51:373
29805050,0irq/28-eth0-rx-0-21swapper/309:35:043
29805050,0irq/28-eth0-rx-0-21swapper/309:30:053
27150,0ktimersoftd/20-21swapper/208:14:122
255599955,0cyclictest0-21swapper/210:30:442
255599955,0cyclictest0-21swapper/209:28:082
255599950,0cyclictest0-21swapper/212:16:182
255599950,0cyclictest0-21swapper/212:04:512
255599950,0cyclictest0-21swapper/211:58:522
255599950,0cyclictest0-21swapper/210:08:302
255599950,0cyclictest0-21swapper/209:52:252
255599950,0cyclictest0-21swapper/209:43:162
255599950,0cyclictest0-21swapper/209:30:592
255589955,0cyclictest0-21swapper/111:42:521
255589955,0cyclictest0-21swapper/109:25:051
255589954,0cyclictest3524-21snmpd08:29:041
255589950,0cyclictest0-21swapper/111:09:081
255589950,0cyclictest0-21swapper/110:35:431
255589950,0cyclictest0-21swapper/110:26:241
255589950,0cyclictest0-21swapper/110:09:231
255589950,0cyclictest0-21swapper/109:40:321
255589950,0cyclictest0-21swapper/109:36:541
259950,0migration/29562-21kthreadcore10:15:052
259950,0migration/29414-21if_eth109:00:022
259950,0migration/27131-21kthreadcore08:35:052
259950,0migration/27010-21kthreadcore09:20:042
259950,0migration/232359-21kthreadcore11:45:042
259950,0migration/219935-21munin-node08:00:012
259950,0migration/218868-21pmu-power10:20:072
259950,0migration/217399-21munin-node07:55:062
249950,0watchdog/20-21swapper/211:23:302
19150,0ktimersoftd/10-21swapper/111:12:081
19150,0ktimersoftd/10-21swapper/108:14:121
169950,0watchdog/15217-21cut10:50:061
149950,0migration/09782-21kthreadcore09:40:030
149950,0migration/09144-21kthreadcore11:30:030
149950,0migration/0843-21kthreadcore11:45:050
149950,0migration/07574-21taskset08:11:260
149950,0migration/07198-21kthreadcore09:20:040
149950,0migration/04754-21sh10:31:200
149950,0migration/04070-21sh12:44:140
149950,0migration/03351-21irqcore11:10:050
149950,0migration/031659-21munin-node09:34:590
149950,0migration/030862-21irqrtprio07:45:020
149950,0migration/029952-21aten_r1power_en09:14:590
149950,0migration/029709-21kthreadcore09:50:030
149950,0migration/029634-21kthreadcore08:50:030
149950,0migration/028433-21taskset11:40:260
149950,0migration/027678-21taskset12:38:530
149950,0migration/026703-21sh11:21:550
149950,0migration/023142-21fschecks_time09:30:010
149950,0migration/019924-21munin-node09:25:110
149950,0migration/018855-21aten_r1power_po07:59:570
149950,0migration/017623-21aten_r1power_vo12:14:580
149950,0migration/01561-21latency_hist09:54:470
149950,0migration/015276-21latency_hist08:19:460
149950,0migration/014095-21kthreadcore12:30:040
149950,0migration/013352-21kthreadcore07:55:040
149950,0migration/01264-21kthreadcore11:25:050
149950,0migration/011948-21kthreadcore11:50:060
149950,0migration/01093-21fschecks_count07:24:590
149950,0migration/010643-21kthreadcore08:15:040
339940,0migration/327847-21kthreadcore08:50:033
339940,0migration/310914-21latency_hist12:29:473
329940,0watchdog/33849-21cat11:45:063
329940,0watchdog/321114-21port_sshpriv07:35:053
329940,0watchdog/317772-21python07:55:093
329940,0watchdog/30-21swapper/308:35:053
329940,0watchdog/30-21swapper/308:19:573
329940,0watchdog/30-21swapper/307:24:573
29815040,0irq/29-eth0-tx-4272-21ssh11:29:542
29815040,0irq/29-eth0-tx-26556-21perl11:04:582
29815040,0irq/29-eth0-tx-15316-21ssh10:55:332
29815040,0irq/29-eth0-tx-0-21swapper/212:40:052
29815040,0irq/29-eth0-tx-0-21swapper/212:30:042
29815040,0irq/29-eth0-tx-0-21swapper/212:24:472
29815040,0irq/29-eth0-tx-0-21swapper/211:59:482
29815040,0irq/29-eth0-tx-0-21swapper/211:49:532
29815040,0irq/29-eth0-tx-0-21swapper/211:14:552
29815040,0irq/29-eth0-tx-0-21swapper/210:34:562
29815040,0irq/29-eth0-tx-0-21swapper/210:10:302
29805040,0irq/28-eth0-rx-11339-21kthreadcore09:40:033
29805040,0irq/28-eth0-rx-0-21swapper/312:34:593
29805040,0irq/28-eth0-rx-0-21swapper/311:01:383
29805040,0irq/28-eth0-rx-0-21swapper/310:55:233
29805040,0irq/28-eth0-rx-0-21swapper/310:14:503
29805040,0irq/28-eth0-rx-0-21swapper/309:44:533
29805040,0irq/28-eth0-rx-0-21swapper/308:40:033
29805040,0irq/28-eth0-rx-0-21swapper/308:15:053
29805040,0irq/28-eth0-rx-0-21swapper/308:00:003
255599944,0cyclictest0-21swapper/207:34:472
255599943,0cyclictest9906-21awk12:10:012
255599943,0cyclictest3524-21snmpd11:34:512
255599943,0cyclictest3524-21snmpd09:08:492
255599943,0cyclictest3524-21snmpd08:22:192
255599943,0cyclictest27026-21awk08:05:012
255599943,0cyclictest23347-21awk07:40:012
255599943,0cyclictest20734-21awk12:35:032
255599943,0cyclictest20089-21awk08:45:022
255589944,0cyclictest0-21swapper/112:42:371
255589944,0cyclictest0-21swapper/112:34:261
255589944,0cyclictest0-21swapper/112:27:201
255589944,0cyclictest0-21swapper/111:45:521
255589944,0cyclictest0-21swapper/111:24:541
255589944,0cyclictest0-21swapper/110:03:331
255589943,0cyclictest9701-21awk10:55:031
255589943,0cyclictest9392-21awk09:00:021
255589943,0cyclictest3571-21lldpd11:24:041
255589943,0cyclictest3571-21lldpd11:16:341
255589943,0cyclictest3571-21lldpd09:11:031
255589943,0cyclictest3571-21lldpd07:40:021
255589943,0cyclictest3571-21lldpd07:37:321
255589943,0cyclictest3571-21lldpd07:27:021
255589943,0cyclictest3524-21snmpd11:00:351
255589943,0cyclictest3524-21snmpd10:30:351
255589943,0cyclictest3524-21snmpd10:20:351
255589943,0cyclictest3524-21snmpd08:04:491
255589943,0cyclictest3524-21snmpd07:57:341
255589943,0cyclictest25041-21awk12:00:031
255589943,0cyclictest20766-21awk12:35:041
255589943,0cyclictest19835-21awk08:00:011
255589943,0cyclictest17759-21awk09:45:031
255589943,0cyclictest16255-21awk11:55:031
255589943,0cyclictest12791-21awk08:40:001
255589940,0cyclictest0-21swapper/109:16:181
255579943,0cyclictest9652-21awk10:55:030
255579943,0cyclictest3571-21lldpd07:20:320
255579943,0cyclictest3524-21snmpd10:15:050
255579943,0cyclictest28765-21awk10:10:010
255579943,0cyclictest16520-21awk09:05:020
255579943,0cyclictest1266-21awk12:05:030
255579940,0cyclictest15269-21awk09:04:460
259940,0migration/211988-21kthreadcore08:15:052
249940,0watchdog/22916-21kthreadcore09:15:052
249940,0watchdog/210410-21munin-node10:00:102
169940,0watchdog/17394-21ssh12:06:381
169940,0watchdog/132635-21chrt07:23:411
169940,0watchdog/110741-21tr11:50:061
169940,0watchdog/10-21swapper/109:54:581
169940,0watchdog/10-21swapper/108:15:091
169940,0watchdog/10-21swapper/107:50:051
149940,0migration/032046-21sh11:05:080
149940,0migration/02830-21fschecks_count12:25:000
149940,0migration/026590-21kthreadcore12:00:040
149940,0migration/020105-21kthreadcore09:45:050
339930,0migration/313640-21munin-node10:20:003
329930,0watchdog/30-21swapper/307:49:493
329930,0watchdog/30-21swapper/307:45:013
329930,0watchdog/30-21swapper/307:40:053
29815030,0irq/29-eth0-tx-22503-21munin-node08:24:580
29815030,0irq/29-eth0-tx-0-21swapper/009:09:570
29815030,0irq/29-eth0-tx-0-21swapper/007:34:560
29805030,0irq/28-eth0-rx-0-21swapper/309:14:583
255599932,0cyclictest3571-21lldpd09:10:032
255599932,0cyclictest31981-21sensors07:20:092
255599932,0cyclictest30065-21grep08:50:032
255599932,0cyclictest23537-21awk08:25:022
255599932,0cyclictest1681-21awk07:25:012
255599932,0cyclictest12837-21awk08:40:012
255599932,0cyclictest10921-21grep07:30:022
255589933,0cyclictest3571-21lldpd07:30:021
255589932,0cyclictest3571-21lldpd09:22:331
255589932,0cyclictest3571-21lldpd09:05:331
255589932,0cyclictest3524-21snmpd12:19:561
255589932,0cyclictest3524-21snmpd11:29:481
255589932,0cyclictest29746-21grep07:44:571
255589932,0cyclictest26574-21awk09:50:011
255589932,0cyclictest23450-21cat10:44:471
255589932,0cyclictest2018-21awk08:55:011
255589932,0cyclictest20041-21awk08:45:021
255589932,0cyclictest16378-21awk08:20:011
255589930,0cyclictest4974-21diskstats08:35:001
255589930,0cyclictest26609-21diskstats08:49:581
255579932,0cyclictest3524-21snmpd08:39:490
255579932,0cyclictest32205-21nfs_client12:20:050
255579932,0cyclictest27436-21sadc10:09:470
255579932,0cyclictest24655-21awk10:45:030
255579932,0cyclictest15143-21sensors12:10:070
255579932,0cyclictest14013-21awk11:35:020
255579932,0cyclictest0-21swapper/007:49:580
255579931,0cyclictest13379-21fschecks_time10:19:590
255579931,0cyclictest0-21swapper/011:15:060
255579930,0cyclictest5447-21perl08:35:010
255579930,0cyclictest26381-21diskstats08:04:590
259930,0migration/230398-21fschecks_time08:29:592
249930,0watchdog/20-21swapper/207:49:492
169930,0watchdog/14552-21diskmemload11:35:221
169930,0watchdog/117796-21ssh12:14:581
169930,0watchdog/10-21swapper/112:46:381
169930,0watchdog/10-21swapper/112:09:541
169930,0watchdog/10-21swapper/110:39:541
169930,0watchdog/10-21swapper/110:16:261
169930,0watchdog/10-21swapper/110:11:181
169930,0watchdog/10-21swapper/109:30:021
149930,0migration/022142-21diskmemload10:41:380
149930,0migration/018309-21diskmemload10:03:270
329920,0watchdog/30-21swapper/309:09:573
255579921,0cyclictest4483-21cut12:44:470
255579921,0cyclictest0-21swapper/010:24:580
169920,0watchdog/10-21swapper/108:29:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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