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2026-08-15 - 22:42
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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 all highest latencies:
System rack1slot2.osadl.org (updated Sat Aug 15, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1371327267,0sleep10-21swapper/107:27:271
1365323930,0sleep20-21swapper/207:26:442
1369523727,0sleep30-21swapper/307:27:133
1373223127,0sleep00-21swapper/007:27:420
29805070,0irq/28-eth0-rx-0-21swapper/311:55:173
140289977,0cyclictest3571-21lldpd08:08:292
8305060,0irq/26-0000:00:18958-21crond09:45:172
339960,0migration/332317-21sh09:31:143
339960,0migration/330193-21sh11:44:033
339960,0migration/330193-21sh11:44:033
339960,0migration/32501-21sendmail_mailqu08:25:393
339960,0migration/323234-21sh11:58:163
339960,0migration/321325-21sh11:37:593
339960,0migration/320711-21sh12:54:363
329960,0watchdog/30-21swapper/311:04:123
29805060,0irq/28-eth0-rx-27401-21sh09:49:353
29805060,0irq/28-eth0-rx-16248-21cat09:00:343
29805060,0irq/28-eth0-rx-0-21swapper/312:16:333
140279965,0cyclictest28623-21kthreadcore08:00:341
140269960,0cyclictest0-21swapper/012:49:250
149960,0migration/032034-21sh12:04:040
8305050,0irq/26-0000:00:3222-17sedispatch09:35:162
8305050,0irq/26-0000:00:1924-21idleruntime-cro12:25:172
8305050,0irq/26-0000:00:18089-21ssh11:15:372
339950,0migration/39523-21fschecks_count12:10:323
339950,0migration/38210-21kthreadcore12:45:363
339950,0migration/36517-21aten_r1power_po10:15:293
339950,0migration/3551-21kthreadcore10:10:353
339950,0migration/34133-21kthreadcore12:05:363
339950,0migration/33800-21irqrtprio12:25:343
339950,0migration/331269-21sh10:28:473
339950,0migration/326941-21fschecks_time12:20:323
339950,0migration/32518-21taskset11:08:383
339950,0migration/323219-21kthreadcore07:35:343
339950,0migration/323120-21kthreadcore07:55:353
339950,0migration/32171-21kthreadcore08:50:343
339950,0migration/320081-21fschecks_time12:35:313
339950,0migration/319938-21kthreadcore09:25:343
339950,0migration/318618-21fschecks_count08:40:313
339950,0migration/317255-21munin-node10:40:313
339950,0migration/316372-21kthreadcore08:35:363
339950,0migration/315126-21kthreadcore07:50:353
339950,0migration/313896-21munin-node08:55:433
339950,0migration/311696-21munin-node09:40:323
339950,0migration/311322-21runrttasks09:56:013
339950,0migration/310333-21taskset07:48:383
329950,0watchdog/38603-21ssh09:36:043
329950,0watchdog/328867-21grep12:00:363
329950,0watchdog/322088-21perl12:55:323
329950,0watchdog/30-21swapper/312:30:363
329950,0watchdog/30-21swapper/310:51:443
29815050,0irq/29-eth0-tx-7193-21munin-node08:10:380
29815050,0irq/29-eth0-tx-5961-21kthreadcore11:10:352
29815050,0irq/29-eth0-tx-5693-21ssh11:46:522
29815050,0irq/29-eth0-tx-5693-21ssh11:46:522
29815050,0irq/29-eth0-tx-3030-21ssh11:25:422
29815050,0irq/29-eth0-tx-30154-21munin-node10:10:362
29815050,0irq/29-eth0-tx-30076-21ssh09:50:362
29815050,0irq/29-eth0-tx-28449-21ssh10:06:082
29815050,0irq/29-eth0-tx-27350-21ssh09:49:242
29815050,0irq/29-eth0-tx-25359-21ssh10:25:342
29815050,0irq/29-eth0-tx-25246-21ksmtuned09:29:460
29815050,0irq/29-eth0-tx-22112-21ssh10:21:542
29815050,0irq/29-eth0-tx-2186-21munin-node12:25:322
29815050,0irq/29-eth0-tx-20522-21munin-node11:20:292
29815050,0irq/29-eth0-tx-17575-21rm12:15:282
29815050,0irq/29-eth0-tx-16852-21kthreadcore11:35:352
29815050,0irq/29-eth0-tx-0-21swapper/211:05:352
29815050,0irq/29-eth0-tx-0-21swapper/210:52:162
29815050,0irq/29-eth0-tx-0-21swapper/210:00:372
29815050,0irq/29-eth0-tx-0-21swapper/209:55:422
29805050,0irq/28-eth0-rx-7972-21grep08:30:353
29805050,0irq/28-eth0-rx-29843-21fschecks_time11:25:303
29805050,0irq/28-eth0-rx-27014-21kthreadcore10:45:343
29805050,0irq/28-eth0-rx-25683-21kthreadcore10:05:353
29805050,0irq/28-eth0-rx-15442-21ps07:30:323
29805050,0irq/28-eth0-rx-11750-21sed11:15:173
29805050,0irq/28-eth0-rx-0-21swapper/311:21:213
29805050,0irq/28-eth0-rx-0-21swapper/310:30:433
29805050,0irq/28-eth0-rx-0-21swapper/310:20:403
29805050,0irq/28-eth0-rx-0-21swapper/310:00:363
27150,0ktimersoftd/20-21swapper/212:01:482
259950,0migration/29618-21ntp_offset08:30:372
259950,0migration/27699-21latency09:35:342
259950,0migration/26563-21diskmemload10:30:512
259950,0migration/23455-21latency_hist08:30:162
259950,0migration/221648-21missed_timers11:55:362
259950,0migration/220146-21kthreadcore09:25:342
259950,0migration/21877-21munin-node12:40:422
259950,0migration/217816-21kthreadcore07:30:342
259950,0migration/213208-21kthreadcore10:55:352
259950,0migration/211819-21sh12:30:332
19150,0ktimersoftd/10-21swapper/112:01:481
179950,0migration/15022-21latency_hist11:30:171
179950,0migration/13105-21kthreadcore08:50:351
179950,0migration/112112-21irqcore12:30:351
169950,0watchdog/132044-21cut08:25:351
169950,0watchdog/10-21swapper/107:30:351
140289954,0cyclictest8736-21tr08:55:342
140279950,0cyclictest0-21swapper/111:47:581
140279950,0cyclictest0-21swapper/111:47:581
140279950,0cyclictest0-21swapper/109:49:051
140279950,0cyclictest0-21swapper/109:40:251
140269955,0cyclictest7393-21kworker/0:010:17:380
140269955,0cyclictest4812-21kworker/0:110:14:040
140269955,0cyclictest4812-21kworker/0:109:50:360
140269955,0cyclictest4812-21kworker/0:109:45:360
140269955,0cyclictest28174-21kworker/0:012:50:500
140269955,0cyclictest28174-21kworker/0:012:16:420
140269955,0cyclictest28174-21kworker/0:012:13:300
140269955,0cyclictest28174-21kworker/0:012:06:100
140269955,0cyclictest28174-21kworker/0:011:54:360
140269955,0cyclictest28174-21kworker/0:011:46:240
140269955,0cyclictest28174-21kworker/0:011:46:240
140269955,0cyclictest28174-21kworker/0:011:37:000
140269955,0cyclictest28174-21kworker/0:011:29:520
140269955,0cyclictest28174-21kworker/0:011:21:280
140269955,0cyclictest28174-21kworker/0:011:15:280
140269955,0cyclictest15963-21kworker/0:110:22:060
140269955,0cyclictest14743-21kworker/0:211:00:420
140269955,0cyclictest14743-21kworker/0:210:41:020
140269955,0cyclictest14743-21kworker/0:210:36:400
140269955,0cyclictest0-21swapper/012:35:330
140269955,0cyclictest0-21swapper/012:30:390
140269955,0cyclictest0-21swapper/009:15:290
140269950,0cyclictest0-21swapper/010:48:010
140269950,0cyclictest0-21swapper/008:55:180
149950,0migration/07594-21missed_timers10:50:360
149950,0migration/04135-21fschecks_count08:30:300
149950,0migration/03267-21latency_hist07:45:160
149950,0migration/032047-21taskset08:48:370
149950,0migration/031973-21latency12:20:370
149950,0migration/031961-21latency_hist10:30:170
149950,0migration/031676-21pmu-power09:30:380
149950,0migration/025645-21fschecks_count08:00:290
149950,0migration/025325-21kthreadcore08:20:350
149950,0migration/024996-21kthreadcore10:05:350
149950,0migration/024199-21kthreadcore09:05:340
149950,0migration/023863-21irqrtprio11:40:340
149950,0migration/023863-21irqrtprio11:40:340
149950,0migration/023098-21kthreadcore07:35:340
149950,0migration/023017-21kthreadcore12:55:360
149950,0migration/016840-21sh10:55:450
149950,0migration/016691-21missed_timers08:35:360
149950,0migration/016078-21munin-node09:00:340
149950,0migration/013353-21cpuspeed_turbos10:00:310
149950,0migration/012138-21sh11:31:020
149950,0migration/010915-21switchtime09:55:420
8305040,0irq/26-0000:00:0-21swapper/211:00:172
339940,0migration/331201-21netstat08:45:373
339940,0migration/330439-21irqrtprio09:10:333
339940,0migration/315414-21if_err_eth008:15:313
329940,0watchdog/39481-21kthreadcore09:15:353
329940,0watchdog/331453-21kthreadcore12:40:363
329940,0watchdog/30-21swapper/310:55:363
329940,0watchdog/30-21swapper/309:50:203
329940,0watchdog/30-21swapper/308:01:393
329940,0watchdog/30-21swapper/307:40:353
29815040,0irq/29-eth0-tx-16861-21ssh10:40:182
29815040,0irq/29-eth0-tx-0-21swapper/212:55:582
29815040,0irq/29-eth0-tx-0-21swapper/212:35:372
29815040,0irq/29-eth0-tx-0-21swapper/212:05:232
29815040,0irq/29-eth0-tx-0-21swapper/210:46:012
29815040,0irq/29-eth0-tx-0-21swapper/210:35:192
29815040,0irq/29-eth0-tx-0-21swapper/210:15:492
29815040,0irq/29-eth0-tx-0-21swapper/007:55:420
29805040,0irq/28-eth0-rx-0-21swapper/311:48:223
29805040,0irq/28-eth0-rx-0-21swapper/311:48:223
29805040,0irq/28-eth0-rx-0-21swapper/311:30:293
29805040,0irq/28-eth0-rx-0-21swapper/311:16:343
29805040,0irq/28-eth0-rx-0-21swapper/310:36:413
259940,0migration/28719-21irqrtprio08:10:342
259940,0migration/28155-21kthreadcore12:45:362
259940,0migration/26536-21irqcore11:30:342
259940,0migration/225607-21fschecks_count08:00:292
259940,0migration/217767-21kthreadcore08:15:342
259940,0migration/214693-21aten_r1power_vo09:00:292
259940,0migration/212942-21kthreadcore08:35:352
249940,0watchdog/230306-21cut08:45:352
249940,0watchdog/227929-21kthreadcore11:40:362
249940,0watchdog/227929-21kthreadcore11:40:362
249940,0watchdog/217273-21kthreadcore12:50:362
249940,0watchdog/20-21swapper/207:40:352
179940,0migration/17455-21if_err_eth010:15:321
179940,0migration/17132-21sh10:32:301
179940,0migration/14553-21kthreadcore12:05:361
179940,0migration/13592-21kthreadcore10:10:361
179940,0migration/129452-21kthreadcore08:45:351
179940,0migration/128023-21munin-node12:40:301
179940,0migration/127823-21timerwakeupswit07:35:421
179940,0migration/123491-21kthreadcore12:55:371
179940,0migration/121571-21runrttasks10:05:261
179940,0migration/120945-21kthreadcore09:25:341
179940,0migration/120245-21fschecks_time12:35:311
179940,0migration/118934-21idleruntime07:55:321
179940,0migration/116879-21if_eth1.211:55:331
179940,0migration/110843-21kthreadcore10:35:341
179940,0migration/110305-21timerwakeupswit09:15:421
169940,0watchdog/1648-21cut07:40:351
169940,0watchdog/14419-21taskset09:55:241
169940,0watchdog/128175-21sh11:05:321
169940,0watchdog/125305-21diskmemload09:50:201
169940,0watchdog/117274-21kthreadcore12:50:361
169940,0watchdog/116345-21kthreadcore07:50:351
169940,0watchdog/112037-21telnet11:15:281
169940,0watchdog/111612-21cut11:50:361
169940,0watchdog/10-21swapper/109:37:521
169940,0watchdog/10-21swapper/109:30:361
140289944,0cyclictest0-21swapper/212:10:392
140289943,0cyclictest8251-21awk11:50:332
140289943,0cyclictest3524-21snmpd09:18:092
140289943,0cyclictest30118-21awk09:10:322
140289943,0cyclictest22592-21awk08:20:322
140289943,0cyclictest22570-21awk07:35:332
140289943,0cyclictest11769-21awk07:50:322
140279944,0cyclictest0-21swapper/111:39:081
140279943,0cyclictest5276-21awk12:45:331
140279943,0cyclictest3671-21egrep07:45:291
140279943,0cyclictest3571-21lldpd10:23:011
140279943,0cyclictest3571-21lldpd09:00:291
140279943,0cyclictest3524-21snmpd12:20:561
140279943,0cyclictest3524-21snmpd11:13:261
140279943,0cyclictest3524-21snmpd10:45:251
140279943,0cyclictest3524-21snmpd09:07:241
140279943,0cyclictest3524-21snmpd08:43:091
140279943,0cyclictest3524-21snmpd08:30:241
140279943,0cyclictest3524-21snmpd08:20:231
140279943,0cyclictest3524-21snmpd08:05:231
140279943,0cyclictest3250-21irqbalance12:19:331
140279943,0cyclictest3250-21irqbalance10:55:231
140279943,0cyclictest3250-21irqbalance10:52:331
140279943,0cyclictest3250-21irqbalance08:10:231
140279943,0cyclictest21598-21awk11:20:321
140279943,0cyclictest19774-21awk11:00:331
140279943,0cyclictest15459-21awk08:15:321
140279943,0cyclictest14263-21awk10:00:341
140279943,0cyclictest12194-21awk09:20:311
140279943,0cyclictest11882-21awk08:35:331
140279940,0cyclictest0-21swapper/110:43:571
140269944,0cyclictest4812-21kworker/0:109:41:380
140269944,0cyclictest4812-21kworker/0:109:35:300
140269944,0cyclictest28174-21kworker/0:012:40:220
140269944,0cyclictest28174-21kworker/0:012:25:200
140269944,0cyclictest28174-21kworker/0:011:56:240
140269944,0cyclictest28174-21kworker/0:011:10:220
140269944,0cyclictest15963-21kworker/0:110:25:180
140269944,0cyclictest14743-21kworker/0:211:05:220
140269943,0cyclictest940-21awk08:05:320
140269943,0cyclictest3524-21snmpd08:41:540
140269943,0cyclictest3250-21irqbalance09:20:230
140269943,0cyclictest3250-21irqbalance09:11:030
140269943,0cyclictest3250-21irqbalance08:50:430
140269943,0cyclictest3250-21irqbalance07:50:330
140269943,0cyclictest3250-21irqbalance07:45:330
149940,0migration/015223-21fschecks_time08:15:300
339930,0migration/321671-21aten_r1power_po08:20:293
339930,0migration/317217-21proc_pri09:20:373
329930,0watchdog/30-21swapper/308:05:353
29805030,0irq/28-eth0-rx-0-21swapper/309:07:093
29805030,0irq/28-eth0-rx-0-21swapper/308:10:273
249930,0watchdog/20-21swapper/208:50:352
249930,0watchdog/20-21swapper/208:40:352
249930,0watchdog/20-21swapper/207:45:352
169930,0watchdog/113104-21kthreadcore12:10:361
169930,0watchdog/10-21swapper/112:26:321
169930,0watchdog/10-21swapper/111:40:361
169930,0watchdog/10-21swapper/111:40:361
140289932,0cyclictest3571-21lldpd09:25:002
140289932,0cyclictest18988-21awk07:55:322
140289930,0cyclictest0-21swapper/209:05:352
140279932,0cyclictest8004-21tune2fs08:55:311
140279932,0cyclictest3524-21snmpd09:10:241
140279931,0cyclictest27248-21cut10:25:351
140279930,0cyclictest7722-21grep11:30:351
140269932,0cyclictest3524-21snmpd08:25:230
140269932,0cyclictest15940-21cut07:30:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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