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2026-04-15 - 15:40
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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 376 highest latencies:
System rack1slot2.osadl.org (updated Wed Apr 15, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2138626362,0sleep10-21swapper/107:19:181
2116925036,0sleep00-21swapper/007:16:480
2123323627,0sleep30-21swapper/307:17:323
1454623526,0sleep20-21swapper/207:15:182
215409976,0cyclictest0-21swapper/008:55:350
339960,0migration/38313-21sh12:48:503
339960,0migration/34351-21taskset09:56:053
339960,0migration/329255-21sh09:54:273
339960,0migration/315020-21munin-node11:35:373
339960,0migration/313221-21munin-node12:30:393
339960,0migration/311756-21sh09:43:593
339960,0migration/311645-21sh10:57:253
329960,0watchdog/320881-21chrt11:04:123
29815060,0irq/29-eth0-tx-11293-21munin-node08:20:340
29805060,0irq/28-eth0-rx-19274-21head09:30:283
215429960,0cyclictest0-21swapper/212:21:262
215419960,0cyclictest0-21swapper/110:24:191
149960,0migration/08437-21sh10:35:390
149960,0migration/06734-21sh10:16:140
149960,0migration/032293-21sh12:44:440
149960,0migration/031313-21sh11:27:550
8305050,0irq/26-0000:00:21516-21users10:05:422
339950,0migration/38481-21taskset11:35:123
339950,0migration/37812-21cpuspeed_turbos07:55:293
339950,0migration/36655-21kthreadcore07:30:333
339950,0migration/3520-21kthreadcore08:10:353
339950,0migration/331497-21sh11:28:253
339950,0migration/330506-21kthreadcore12:05:343
339950,0migration/329409-21latency_hist08:55:163
339950,0migration/327283-21kthreadcore07:45:323
339950,0migration/324984-21switchtime09:10:403
339950,0migration/322859-21irqcore11:05:333
339950,0migration/322607-21kthreadcore12:00:343
339950,0migration/319403-21taskset12:15:383
339950,0migration/319199-21diskmemload11:59:363
339950,0migration/318220-21taskset09:07:203
339950,0migration/318019-21taskset10:42:183
339950,0migration/316843-21kthreadcore10:05:343
339950,0migration/31365-21fschecks_time09:20:293
339950,0migration/310378-21munin-node09:00:353
329950,0watchdog/323577-21kthreadcore10:45:363
329950,0watchdog/322855-21perl08:05:313
329950,0watchdog/31270-21irqrtprio10:15:313
29815050,0irq/29-eth0-tx-8154-21chrt10:20:092
29815050,0irq/29-eth0-tx-14460-21kthreadcore09:45:332
29815050,0irq/29-eth0-tx-0-21swapper/211:43:122
29815050,0irq/29-eth0-tx-0-21swapper/211:14:332
29815050,0irq/29-eth0-tx-0-21swapper/210:20:562
29815050,0irq/29-eth0-tx-0-21swapper/210:10:292
29815050,0irq/29-eth0-tx-0-21swapper/209:43:282
29815050,0irq/29-eth0-tx-0-21swapper/209:31:312
29815050,0irq/29-eth0-tx-0-21swapper/009:20:250
29815050,0irq/29-eth0-tx-0-21swapper/008:26:340
29815050,0irq/29-eth0-tx-0-21swapper/008:05:460
29815050,0irq/29-eth0-tx-0-21swapper/007:57:260
29805050,0irq/28-eth0-rx-8916-21diskstats10:20:293
29805050,0irq/28-eth0-rx-8169-21kthreadcore11:15:343
29805050,0irq/28-eth0-rx-6489-21df10:00:293
29805050,0irq/28-eth0-rx-601-21diskstats07:50:283
29805050,0irq/28-eth0-rx-29836-21python10:10:383
29805050,0irq/28-eth0-rx-28281-21grep08:50:383
29805050,0irq/28-eth0-rx-2398-21entropy10:35:293
29805050,0irq/28-eth0-rx-14341-21cut09:25:353
29805050,0irq/28-eth0-rx-11830-21ssh12:12:013
29805050,0irq/28-eth0-rx-0-21swapper/311:21:513
29805050,0irq/28-eth0-rx-0-21swapper/310:50:313
29805050,0irq/28-eth0-rx-0-21swapper/310:25:333
29805050,0irq/28-eth0-rx-0-21swapper/309:45:203
259950,0migration/232758-21runrttasks12:45:242
259950,0migration/231554-21kthreadcore11:45:352
259950,0migration/222813-21irqcore11:05:332
259950,0migration/21832-21sendmail_mailqu10:50:382
259950,0migration/215789-21cpuspeed_turbos12:35:302
259950,0migration/215214-21smart_sdb11:35:402
259950,0migration/21446-21kthreadcore09:55:342
259950,0migration/214278-21kthreadcore10:40:342
259950,0migration/210610-21missed_timers12:10:352
249950,0watchdog/212534-21memory11:15:362
249950,0watchdog/20-21swapper/209:37:152
215429955,0cyclictest0-21swapper/211:34:182
215429955,0cyclictest0-21swapper/210:56:182
215429955,0cyclictest0-21swapper/210:36:172
215429955,0cyclictest0-21swapper/210:26:022
215429955,0cyclictest0-21swapper/209:22:492
215429955,0cyclictest0-21swapper/208:50:392
215429950,0cyclictest0-21swapper/212:03:092
215429950,0cyclictest0-21swapper/211:04:022
215419950,0cyclictest0-21swapper/111:39:211
215419950,0cyclictest0-21swapper/109:42:321
215419950,0cyclictest0-21swapper/107:47:171
215409955,0cyclictest0-21swapper/011:23:190
215409950,0cyclictest0-21swapper/010:42:480
179950,0migration/19490-21kthreadcore10:00:341
179950,0migration/19226-21kthreadcore12:30:341
179950,0migration/1722-21missed_timers09:35:341
179950,0migration/16657-21latency_hist12:30:171
179950,0migration/13899-21latency_hist08:15:161
179950,0migration/131625-21munin-node11:10:351
179950,0migration/129930-21kthreadcore09:15:341
179950,0migration/129039-21sh09:53:511
179950,0migration/127941-21switchtime11:05:411
179950,0migration/126094-21df_abs08:30:291
179950,0migration/125768-21munin-node10:30:261
179950,0migration/125493-21taskset09:13:151
179950,0migration/123633-21kthreadcore07:20:331
179950,0migration/121538-21kthreadcore12:00:341
179950,0migration/121403-21sh12:19:391
179950,0migration/11682-21munin-node08:35:331
179950,0migration/113761-21kthreadcore07:35:321
169950,0watchdog/125539-21kthreadcore08:05:351
149950,0migration/09937-21munin-node08:15:350
149950,0migration/08634-21fschecks_time08:40:300
149950,0migration/07063-21unixbench-2d08:35:420
149950,0migration/06800-21sh10:00:300
149950,0migration/05490-21kthreadcore11:50:350
149950,0migration/04449-21fschecks_time09:40:290
149950,0migration/03273-21taskset07:27:140
149950,0migration/032271-21kthreadcore12:25:340
149950,0migration/031900-21smart_nvme0n108:30:380
149950,0migration/02461-21ksmtuned10:51:190
149950,0migration/023555-21sh12:39:270
149950,0migration/021663-21kthreadcore09:10:330
149950,0migration/019552-21cpu10:45:300
149950,0migration/018930-21fschecks_time07:40:280
149950,0migration/018350-21fschecks_time11:40:300
149950,0migration/018240-21taskset09:07:340
149950,0migration/017746-21taskset07:36:590
149950,0migration/017200-21aten_r1power_fr10:25:270
149950,0migration/016116-21irqcore10:05:330
149950,0migration/015958-21munin-node08:45:290
149950,0migration/015220-21kthreadcore09:25:350
149950,0migration/014341-21idleruntime12:15:330
149950,0migration/011833-21kthreadcore11:15:350
149950,0migration/011292-21sh10:56:260
149950,0migration/010380-21kthreadcore10:20:330
8305040,0irq/26-0000:00:0-21swapper/209:05:372
339940,0migration/325330-21taskset08:28:533
339940,0migration/322878-21kthreadcore11:40:353
339940,0migration/322310-21fschecks_count07:20:303
339940,0migration/317821-21kthreadcore12:35:353
339940,0migration/316537-21kthreadcore08:20:343
329940,0watchdog/35457-21cut08:35:353
329940,0watchdog/326715-21munin-node08:30:313
329940,0watchdog/30-21swapper/311:50:363
329940,0watchdog/30-21swapper/310:30:323
329940,0watchdog/30-21swapper/309:35:273
329940,0watchdog/30-21swapper/308:47:473
329940,0watchdog/30-21swapper/308:15:353
329940,0watchdog/30-21swapper/307:37:273
29815040,0irq/29-eth0-tx-6836-21ssh12:30:252
29815040,0irq/29-eth0-tx-395-21diskmemload12:40:182
29815040,0irq/29-eth0-tx-3534-21sshd09:02:280
29815040,0irq/29-eth0-tx-21950-21ssh11:20:512
29815040,0irq/29-eth0-tx-10585-21if_eth109:25:322
29815040,0irq/29-eth0-tx-0-21swapper/212:15:182
29815040,0irq/29-eth0-tx-0-21swapper/212:06:202
29815040,0irq/29-eth0-tx-0-21swapper/211:55:342
29815040,0irq/29-eth0-tx-0-21swapper/211:50:192
29815040,0irq/29-eth0-tx-0-21swapper/211:25:192
29815040,0irq/29-eth0-tx-0-21swapper/210:30:182
29815040,0irq/29-eth0-tx-0-21swapper/210:00:222
29815040,0irq/29-eth0-tx-0-21swapper/209:50:272
29815040,0irq/29-eth0-tx-0-21swapper/007:45:260
29805040,0irq/28-eth0-rx-26353-21egrep11:45:293
29805040,0irq/28-eth0-rx-0-21swapper/312:40:333
29805040,0irq/28-eth0-rx-0-21swapper/312:25:293
29805040,0irq/28-eth0-rx-0-21swapper/312:21:163
29805040,0irq/28-eth0-rx-0-21swapper/311:10:323
29805040,0irq/28-eth0-rx-0-21swapper/308:00:333
259940,0migration/29048-21kthreadcore07:30:332
259940,0migration/230901-21kthreadcore07:25:322
259940,0migration/224104-21kthreadcore08:25:352
259940,0migration/220556-21munin-node10:45:342
259940,0migration/214335-21unixbench_multi08:40:422
249940,0watchdog/20-21swapper/208:30:352
249940,0watchdog/20-21swapper/208:10:352
215429944,0cyclictest0-21swapper/207:55:192
215429943,0cyclictest5379-21awk09:00:302
215429943,0cyclictest3524-21snmpd08:20:212
215429943,0cyclictest3524-21snmpd07:20:362
215429943,0cyclictest31597-21awk12:25:322
215429943,0cyclictest1362-21awk07:50:312
215419944,0cyclictest0-21swapper/112:43:501
215419944,0cyclictest0-21swapper/111:27:221
215419944,0cyclictest0-21swapper/110:15:381
215419943,0cyclictest8927-21awk08:40:321
215419943,0cyclictest8627-21awk07:55:321
215419943,0cyclictest19527-21awk08:25:311
215419943,0cyclictest19424-21awk07:40:301
215419943,0cyclictest14066-21awk11:00:321
215419940,0cyclictest0-21swapper/111:54:481
215409944,0cyclictest0-21swapper/012:05:430
215409944,0cyclictest0-21swapper/011:49:200
215409943,0cyclictest3524-21snmpd11:31:530
215409943,0cyclictest3524-21snmpd08:54:060
215409943,0cyclictest31358-21awk11:10:340
215409943,0cyclictest23004-21awk12:20:310
215409943,0cyclictest22328-21awk09:50:310
215409943,0cyclictest15817-21awk08:00:310
215409940,0cyclictest0-21swapper/009:30:420
179940,0migration/18420-21taskset09:23:211
179940,0migration/16419-21latency_hist11:15:171
179940,0migration/15227-21fschecks_count12:10:301
179940,0migration/13890-21kthreadcore11:30:341
179940,0migration/131321-21kthreadcore10:50:341
179940,0migration/129089-21taskset08:54:021
179940,0migration/119249-21latency_hist10:45:171
179940,0migration/117869-21df_abs11:40:291
179940,0migration/117101-21kthreadcore11:20:341
179940,0migration/116660-21kthreadcore08:20:341
179940,0migration/114833-21aten_r1power_fr08:00:271
179940,0migration/113834-21irqcore09:45:321
179940,0migration/11250-21idleruntime07:50:301
179940,0migration/111504-21latency_hist09:05:161
169940,0watchdog/19917-21load08:15:351
169940,0watchdog/17655-21ssh12:47:001
169940,0watchdog/15107-21perl10:55:321
169940,0watchdog/13539-21ssh12:08:041
169940,0watchdog/119582-21iostat_ios09:30:311
169940,0watchdog/10-21swapper/110:11:151
169940,0watchdog/10-21swapper/110:05:231
169940,0watchdog/10-21swapper/109:59:551
149940,0migration/03846-21kthreadcore07:50:330
149940,0migration/014175-21kthreadcore11:35:350
149940,0migration/013314-21fschecks_time09:45:290
8305030,0irq/26-0000:00:0-21swapper/207:45:422
8305030,0irq/26-0000:00:0-21swapper/207:35:222
29815030,0irq/29-eth0-tx-0-21swapper/007:20:280
29805030,0irq/28-eth0-rx-0-21swapper/309:15:283
29805030,0irq/28-eth0-rx-0-21swapper/308:40:343
29805030,0irq/28-eth0-rx-0-21swapper/307:40:263
29805030,0irq/28-eth0-rx-0-21swapper/307:25:263
249930,0watchdog/20-21swapper/208:05:312
215429933,0cyclictest5153-21awk08:15:322
215429933,0cyclictest0-21swapper/208:45:172
215429932,0cyclictest449-21aten2.4-expect08:35:282
215429932,0cyclictest3524-21snmpd09:10:362
215419932,0cyclictest23580-21sort10:25:401
215419932,0cyclictest16191-21awk08:45:311
215419932,0cyclictest12298-21awk11:55:311
215419931,0cyclictest17583-21kthreadcore12:35:351
215419930,0cyclictest4871-21munin-node07:30:301
215419930,0cyclictest13123-21kthreadcore10:40:341
215409933,0cyclictest3571-21lldpd12:46:540
215409932,0cyclictest6983-21aten_r1power_vo12:30:290
215409932,0cyclictest4682-21aten_r1power_en12:10:280
215409932,0cyclictest395-21diskmemload11:05:290
215409932,0cyclictest3524-21snmpd09:56:070
215409932,0cyclictest30391-21kthreadcore10:30:320
215409932,0cyclictest28399-21awk09:35:310
215409932,0cyclictest24549-21awk10:10:310
215409930,0cyclictest13696-21cut11:00:300
215409930,0cyclictest0-21swapper/009:15:290
215409930,0cyclictest0-21swapper/008:10:290
179930,0migration/131680-21kthreadcore07:25:321
179930,0migration/112846-21kthreadcore09:25:341
169930,0watchdog/123417-21cut12:20:321
169930,0watchdog/10-21swapper/111:46:041
169930,0watchdog/10-21swapper/110:35:281
10622233,0sleep03524-21snmpd07:33:060
249920,0watchdog/20-21swapper/208:55:192
215429921,0cyclictest25837-21latency_hist09:15:162
215429920,0cyclictest0-21swapper/208:00:162
215429920,0cyclictest0-21swapper/207:40:152
215409920,0cyclictest11104-21ssh11:55:200
215409920,0cyclictest0-21swapper/012:00:230
169920,0watchdog/10-21swapper/109:00:191
169920,0watchdog/10-21swapper/108:55:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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