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2026-05-20 - 19:23
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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 all highest latencies:
System rack1slot2.osadl.org (updated Wed May 20, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2807825238,0sleep00-21swapper/007:21:100
2792724836,0sleep30-21swapper/307:19:253
2789524432,0sleep10-21swapper/107:19:031
2799222824,0sleep20-21swapper/207:20:122
4160,0ktimersoftd/03575-21sh11:10:350
35160,0ktimersoftd/30-21swapper/311:25:093
35160,0ktimersoftd/30-21swapper/310:01:363
339960,0migration/39155-21kthreadcore08:13:273
339960,0migration/331053-21sh10:29:123
339960,0migration/327856-21idleruntime-cro09:53:093
339960,0migration/322740-21gltestperf10:08:233
339960,0migration/317755-21taskset08:23:063
29815060,0irq/29-eth0-tx-20388-21ssh11:19:172
29815060,0irq/29-eth0-tx-0-21swapper/007:28:340
29805060,0irq/28-eth0-rx-4922-21diskstats12:28:223
29805060,0irq/28-eth0-rx-29722-21perl08:53:243
259960,0migration/2851-21runrttasks09:36:562
149960,0migration/06869-21latency_hist07:53:100
8305050,0irq/26-0000:00:16749-21open_files09:43:302
339950,0migration/39166-21aten2.4-expect10:38:203
339950,0migration/38716-21kthreadcore11:33:283
339950,0migration/37579-21kthreadcore09:38:273
339950,0migration/36588-21kthreadcore11:13:293
339950,0migration/34225-21kthreadcore10:53:263
339950,0migration/33532-21runrttasks07:28:223
339950,0migration/332452-21taskset09:34:533
339950,0migration/331278-21kthreadcore12:23:283
339950,0migration/329166-21kthreadcore09:13:293
339950,0migration/328958-21kthreadcore12:03:273
339950,0migration/326474-21munin-node10:48:203
339950,0migration/323987-21smart_sda07:38:323
339950,0migration/320293-21latency08:43:283
339950,0migration/318883-21irqcore11:58:253
339950,0migration/313035-21latency_hist12:33:103
329950,0watchdog/38218-21ps10:18:253
329950,0watchdog/37206-21sh11:48:573
329950,0watchdog/36158-21munin-node09:18:293
329950,0watchdog/331282-21kthreadcore07:23:283
329950,0watchdog/311779-21kthreadcore08:38:283
329950,0watchdog/30-21swapper/310:13:213
329950,0watchdog/30-21swapper/310:05:253
29815050,0irq/29-eth0-tx-9860-21ssh09:41:562
29815050,0irq/29-eth0-tx-8990-21ps09:23:250
29815050,0irq/29-eth0-tx-27490-21ssh12:21:542
29815050,0irq/29-eth0-tx-1566-21interrupts10:33:272
29815050,0irq/29-eth0-tx-12505-21cut11:53:282
29815050,0irq/29-eth0-tx-0-21swapper/212:41:362
29815050,0irq/29-eth0-tx-0-21swapper/211:23:412
29815050,0irq/29-eth0-tx-0-21swapper/210:43:342
29815050,0irq/29-eth0-tx-0-21swapper/210:30:012
29815050,0irq/29-eth0-tx-0-21swapper/210:14:242
29815050,0irq/29-eth0-tx-0-21swapper/009:18:350
29815050,0irq/29-eth0-tx-0-21swapper/008:44:490
29815050,0irq/29-eth0-tx-0-21swapper/007:24:320
29805050,0irq/28-eth0-rx-6314-21runrttasks12:43:203
29805050,0irq/28-eth0-rx-24938-21latency_hist07:43:103
29805050,0irq/28-eth0-rx-2115-21needreboot11:08:303
29805050,0irq/28-eth0-rx-0-21swapper/312:38:283
29805050,0irq/28-eth0-rx-0-21swapper/312:18:143
29805050,0irq/28-eth0-rx-0-21swapper/311:53:283
29805050,0irq/28-eth0-rx-0-21swapper/311:45:253
29805050,0irq/28-eth0-rx-0-21swapper/311:39:513
29805050,0irq/28-eth0-rx-0-21swapper/311:28:263
29805050,0irq/28-eth0-rx-0-21swapper/311:21:333
29805050,0irq/28-eth0-rx-0-21swapper/311:04:293
29805050,0irq/28-eth0-rx-0-21swapper/310:44:443
29805050,0irq/28-eth0-rx-0-21swapper/310:37:003
29805050,0irq/28-eth0-rx-0-21swapper/309:53:113
29805050,0irq/28-eth0-rx-0-21swapper/309:24:573
29805050,0irq/28-eth0-rx-0-21swapper/308:23:303
29805050,0irq/28-eth0-rx-0-21swapper/308:23:303
283209950,0cyclictest0-21swapper/211:31:072
283209950,0cyclictest0-21swapper/210:59:542
283209950,0cyclictest0-21swapper/207:38:242
283209950,0cyclictest0-21swapper/207:28:382
283199955,0cyclictest0-21swapper/111:28:311
283199955,0cyclictest0-21swapper/110:07:001
283199955,0cyclictest0-21swapper/110:00:511
283199950,0cyclictest0-21swapper/111:14:291
283199950,0cyclictest0-21swapper/110:57:181
283199950,0cyclictest0-21swapper/109:35:191
283199950,0cyclictest0-21swapper/109:03:091
283199950,0cyclictest0-21swapper/108:33:121
283189955,0cyclictest0-21swapper/007:53:120
283189950,0cyclictest0-21swapper/012:31:470
283189950,0cyclictest0-21swapper/012:14:170
283189950,0cyclictest0-21swapper/011:41:010
27150,0ktimersoftd/20-21swapper/212:25:582
27150,0ktimersoftd/20-21swapper/210:52:152
259950,0migration/27094-21kthreadcore08:58:272
259950,0migration/227166-21sh12:03:232
259950,0migration/219782-21latency_hist11:03:102
259950,0migration/215286-21latency_hist11:38:102
259950,0migration/21389-21kthreadcore09:53:282
259950,0migration/212509-21taskset12:32:122
259950,0migration/210088-21kthreadcore09:23:262
249950,0watchdog/216590-21kthreadcore09:03:282
19150,0ktimersoftd/10-21swapper/107:58:311
179950,0migration/1661-21kthreadcore11:08:281
179950,0migration/1632-21sh12:04:091
179950,0migration/12298-21latency_hist12:08:101
179950,0migration/117743-21cpu11:58:211
179950,0migration/115376-21latency_hist10:23:091
169950,0watchdog/130563-21basename10:13:211
169950,0watchdog/110702-21ssh11:33:291
149950,0migration/07706-21gltestperf10:18:220
149950,0migration/07586-21hwlatdetect12:48:250
149950,0migration/06407-21kthreadcore08:58:260
149950,0migration/05527-21kthreadcore12:08:280
149950,0migration/03585-21taskset08:58:030
149950,0migration/030459-21munin-node10:13:200
149950,0migration/029795-21sh10:12:070
149950,0migration/028098-21kthreadcore11:43:280
149950,0migration/027096-21fschecks_time10:48:210
149950,0migration/026984-21fschecks_time12:03:220
149950,0migration/026054-21fschecks_time08:28:230
149950,0migration/025940-21munin-node07:43:230
149950,0migration/025096-21taskset09:33:100
149950,0migration/024680-21taskset08:24:560
149950,0migration/024680-21taskset08:24:560
149950,0migration/021319-21kthreadcore09:48:270
149950,0migration/01939-21kernelversion10:33:280
149950,0migration/01917-21cpuspeed_turbos09:38:200
149950,0migration/019163-21munin-node10:03:290
149950,0migration/018555-21taskset11:00:080
149950,0migration/018376-21sh09:46:090
149950,0migration/014630-21munin-node11:18:270
149950,0migration/013678-21fschecks_count12:33:220
149950,0migration/013468-21kthreadcore09:03:280
149950,0migration/011832-21kthreadcore08:38:280
8305040,0irq/26-0000:00:0-21swapper/208:38:102
8305040,0irq/26-0000:00:0-21swapper/207:53:102
339940,0migration/39180-21kthreadcore08:58:273
339940,0migration/316732-21kthreadcore09:03:293
339940,0migration/310584-21runrttasks09:43:133
329940,0watchdog/312955-21munin-node07:53:283
329940,0watchdog/30-21swapper/309:08:283
329940,0watchdog/30-21swapper/308:48:203
329940,0watchdog/30-21swapper/308:08:283
329940,0watchdog/30-21swapper/307:48:203
29815040,0irq/29-eth0-tx-6040-21iostat_ios11:13:282
29815040,0irq/29-eth0-tx-15441-21ssh11:38:122
29815040,0irq/29-eth0-tx-0-21swapper/212:43:182
29815040,0irq/29-eth0-tx-0-21swapper/212:33:182
29815040,0irq/29-eth0-tx-0-21swapper/212:13:202
29815040,0irq/29-eth0-tx-0-21swapper/212:08:202
29815040,0irq/29-eth0-tx-0-21swapper/211:58:262
29815040,0irq/29-eth0-tx-0-21swapper/211:49:372
29815040,0irq/29-eth0-tx-0-21swapper/211:08:282
29815040,0irq/29-eth0-tx-0-21swapper/210:23:172
29815040,0irq/29-eth0-tx-0-21swapper/210:08:132
29815040,0irq/29-eth0-tx-0-21swapper/210:03:222
29815040,0irq/29-eth0-tx-0-21swapper/009:08:260
29805040,0irq/28-eth0-rx-0-21swapper/312:48:293
29805040,0irq/28-eth0-rx-0-21swapper/312:15:033
29805040,0irq/28-eth0-rx-0-21swapper/312:11:583
29805040,0irq/28-eth0-rx-0-21swapper/310:59:563
29805040,0irq/28-eth0-rx-0-21swapper/310:24:463
29805040,0irq/28-eth0-rx-0-21swapper/309:28:203
29805040,0irq/28-eth0-rx-0-21swapper/308:03:213
283209943,0cyclictest7860-21awk10:18:232
283209943,0cyclictest3571-21lldpd09:19:232
283209943,0cyclictest3571-21lldpd08:44:242
283209943,0cyclictest3571-21lldpd07:33:222
283209943,0cyclictest3524-21snmpd10:38:172
283209943,0cyclictest3250-21irqbalance12:48:172
283209943,0cyclictest3250-21irqbalance08:29:062
283209943,0cyclictest3250-21irqbalance08:23:162
283209943,0cyclictest3250-21irqbalance08:23:162
283209943,0cyclictest3250-21irqbalance08:03:262
283209943,0cyclictest3250-21irqbalance07:23:162
283209943,0cyclictest30009-21awk08:53:262
283209943,0cyclictest29732-21awk08:08:252
283209943,0cyclictest26473-21awk09:13:272
283209943,0cyclictest22797-21awk08:48:222
283209943,0cyclictest17522-21awk09:28:242
283199944,0cyclictest0-21swapper/112:43:241
283199943,0cyclictest3571-21lldpd12:35:251
283199943,0cyclictest3571-21lldpd12:28:551
283199943,0cyclictest3571-21lldpd12:23:251
283199943,0cyclictest3571-21lldpd11:44:251
283199943,0cyclictest3571-21lldpd11:00:241
283199943,0cyclictest3571-21lldpd10:38:241
283199943,0cyclictest3571-21lldpd09:53:241
283199943,0cyclictest3571-21lldpd09:48:531
283199943,0cyclictest3571-21lldpd09:27:231
283199943,0cyclictest3571-21lldpd08:53:231
283199943,0cyclictest3524-21snmpd08:10:461
283199943,0cyclictest27433-21awk10:48:231
283199943,0cyclictest26012-21awk07:43:241
283199943,0cyclictest22942-21awk10:08:251
283199943,0cyclictest20829-21awk12:18:261
283199943,0cyclictest14547-21awk11:18:261
283199943,0cyclictest10348-21sadc09:43:091
283189944,0cyclictest0-21swapper/012:43:170
283189944,0cyclictest0-21swapper/012:21:040
283189944,0cyclictest0-21swapper/011:17:030
283189944,0cyclictest0-21swapper/009:55:420
283189943,0cyclictest3571-21lldpd11:33:550
283189943,0cyclictest3571-21lldpd10:56:240
283189943,0cyclictest3571-21lldpd08:08:230
283189943,0cyclictest3524-21snmpd10:41:320
283189943,0cyclictest16562-21awk10:23:250
283189943,0cyclictest15384-21awk07:58:250
283189943,0cyclictest11835-21awk08:18:240
259940,0migration/26866-21kthreadcore10:53:272
259940,0migration/23169-21kthreadcore08:33:262
259940,0migration/224329-21cpuspeed_turbos11:43:222
259940,0migration/220523-21switchtime07:58:342
259940,0migration/217184-21timerwakeupswit08:18:342
259940,0migration/211503-21sh09:59:282
249940,0watchdog/23647-21sh08:13:202
249940,0watchdog/232276-21aten_r1power_fr07:48:202
249940,0watchdog/20-21swapper/209:48:292
179940,0migration/16377-21pmu-power09:18:311
179940,0migration/14930-21kernelversion07:28:271
179940,0migration/126547-21kthreadcore10:28:261
179940,0migration/12650-21kthreadcore11:48:281
179940,0migration/125021-21latency_hist08:28:101
179940,0migration/125021-21latency_hist08:28:101
179940,0migration/122666-21kthreadcore10:43:271
179940,0migration/122161-21aten_r1power_fr11:23:221
179940,0migration/120792-21kthreadcore07:38:271
179940,0migration/120453-21fschecks_count11:03:231
179940,0migration/120012-21kthreadcore11:38:281
179940,0migration/117774-21irqcore09:28:251
179940,0migration/117612-21taskset08:21:291
179940,0migration/113267-21timerandwakeup10:18:331
179940,0migration/111885-21kthreadcore12:48:291
179940,0migration/111656-21if_err_eth107:33:241
179940,0migration/110994-21latency_hist12:13:101
179940,0migration/110822-21turbostat09:03:091
169940,0watchdog/17404-21ssh10:34:091
169940,0watchdog/132274-21aten_r1power_fr07:48:201
169940,0watchdog/131284-21kthreadcore07:23:281
169940,0watchdog/127617-21mdstat12:38:291
169940,0watchdog/127499-21cut09:13:291
169940,0watchdog/117043-21ssh11:57:291
169940,0watchdog/10-21swapper/109:08:281
169940,0watchdog/10-21swapper/108:48:201
149940,0migration/04923-21irqrtprio08:13:250
149940,0migration/031929-21irqcore11:28:270
149940,0migration/024024-21latency_hist10:28:090
149940,0migration/021986-21fschecks_count08:03:230
149940,0migration/021675-21sh12:38:170
149940,0migration/011558-21kthreadcore11:53:270
149940,0migration/011311-21fschecks_time07:33:220
29805030,0irq/28-eth0-rx-0-21swapper/308:34:313
29805030,0irq/28-eth0-rx-0-21swapper/308:28:153
29805030,0irq/28-eth0-rx-0-21swapper/307:58:223
29805030,0irq/28-eth0-rx-0-21swapper/307:33:223
283209932,0cyclictest3571-21lldpd07:43:222
283209932,0cyclictest19294-21awk09:08:252
283199932,0cyclictest15553-21awk08:43:251
283199930,0cyclictest11338-21perl09:43:231
283199930,0cyclictest0-21swapper/108:03:521
283189933,0cyclictest19001-21kworker/0:009:28:190
283189933,0cyclictest19001-21kworker/0:008:48:150
283189933,0cyclictest19001-21kworker/0:008:33:150
283189933,0cyclictest19001-21kworker/0:007:38:160
283189933,0cyclictest17378-21kworker/0:212:23:130
283189933,0cyclictest17378-21kworker/0:211:58:170
283189933,0cyclictest17378-21kworker/0:211:48:150
283189933,0cyclictest17378-21kworker/0:211:23:210
283189933,0cyclictest17378-21kworker/0:211:03:130
283189933,0cyclictest17378-21kworker/0:210:43:150
283189933,0cyclictest17378-21kworker/0:209:58:130
283189930,0cyclictest0-21swapper/009:13:250
179930,0migration/129853-21kthreadcore08:28:281
169930,0watchdog/10-21swapper/108:38:281
169930,0watchdog/10-21swapper/108:13:201
169920,0watchdog/10-21swapper/107:53:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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