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2026-05-02 - 18:18
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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 May 02, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3043628175,0sleep00-21swapper/007:21:230
3016623624,0sleep10-21swapper/107:18:201
3007723329,0sleep20-21swapper/207:17:172
3018423127,0sleep30-21swapper/307:18:303
339960,0migration/327601-21sh12:00:003
339960,0migration/322353-21munin-node07:56:593
339960,0migration/321133-21sh12:14:493
339960,0migration/317688-21sh10:37:293
339960,0migration/31621-21sh09:32:343
329960,0watchdog/33608-21sh10:50:163
305349960,0cyclictest0-21swapper/209:23:082
305339965,0cyclictest20932-21sed10:01:591
305329960,0cyclictest0-21swapper/010:11:570
29805060,0irq/28-eth0-rx-18401-21cut11:36:553
29805060,0irq/28-eth0-rx-11655-21diskstats11:51:553
29805060,0irq/28-eth0-rx-1085-21diskstats12:41:543
179960,0migration/121738-21munin-node09:06:571
179960,0migration/112459-21kthreadcore07:51:591
149960,0migration/028100-21sh09:47:270
149960,0migration/02047-21taskset09:33:460
149960,0migration/014634-21needreboot10:17:010
8305050,0irq/26-0000:00:13292-21latency_hist12:11:412
8305050,0irq/26-0000:00:0-21swapper/308:26:403
339950,0migration/38772-21aten_r1power_vo10:16:533
339950,0migration/38430-21kthreadcore08:11:583
339950,0migration/35625-21kthreadcore10:31:583
339950,0migration/34579-21kthreadcore08:31:583
339950,0migration/34484-21latency08:51:593
339950,0migration/33895-21cpuspeed_turbos09:36:543
339950,0migration/331579-21irqcore11:06:563
339950,0migration/331575-21fschecks_time07:21:543
339950,0migration/330896-21kthreadcore10:27:003
339950,0migration/326630-21kthreadcore12:17:003
339950,0migration/326359-21kthreadcore10:06:583
339950,0migration/324750-21gltestperf08:46:543
339950,0migration/321671-21sendmail_mailtr11:17:043
339950,0migration/319859-21kthreadcore08:41:583
339950,0migration/316383-21kthreadcore09:01:583
339950,0migration/315735-21sh12:31:503
339950,0migration/31447-21taskset07:42:283
339950,0migration/313574-21idleruntime09:41:573
339950,0migration/313258-21munin-node07:31:543
339950,0migration/310559-21taskset11:50:403
329950,0watchdog/37345-21if_err_eth009:56:563
329950,0watchdog/328839-21sh11:03:203
329950,0watchdog/32047-21ls12:02:003
329950,0watchdog/314603-21ssh11:15:243
329950,0watchdog/30-21swapper/307:36:593
305349955,0cyclictest0-21swapper/212:27:072
305349955,0cyclictest0-21swapper/212:01:452
305349955,0cyclictest0-21swapper/210:42:452
305349955,0cyclictest0-21swapper/210:34:522
305349955,0cyclictest0-21swapper/210:14:422
305349955,0cyclictest0-21swapper/207:37:022
305349950,0cyclictest0-21swapper/212:41:472
305349950,0cyclictest0-21swapper/211:28:292
305349950,0cyclictest0-21swapper/210:03:302
305349950,0cyclictest0-21swapper/209:59:242
305339955,0cyclictest0-21swapper/112:45:101
305339950,0cyclictest0-21swapper/112:23:341
305339950,0cyclictest0-21swapper/110:17:171
305339950,0cyclictest0-21swapper/110:10:111
305339950,0cyclictest0-21swapper/107:26:421
305329955,0cyclictest0-21swapper/010:43:380
29815050,0irq/29-eth0-tx-9835-21ssh11:48:382
29815050,0irq/29-eth0-tx-27259-21munin-node07:42:000
29815050,0irq/29-eth0-tx-2314-21munin-node09:17:030
29815050,0irq/29-eth0-tx-21117-21iostat11:56:582
29815050,0irq/29-eth0-tx-17103-21ssh11:36:042
29815050,0irq/29-eth0-tx-16702-21ssh12:48:452
29815050,0irq/29-eth0-tx-0-21swapper/212:37:112
29815050,0irq/29-eth0-tx-0-21swapper/212:34:202
29815050,0irq/29-eth0-tx-0-21swapper/209:41:542
29815050,0irq/29-eth0-tx-0-21swapper/009:14:260
29815050,0irq/29-eth0-tx-0-21swapper/009:09:240
29815050,0irq/29-eth0-tx-0-21swapper/008:56:550
29815050,0irq/29-eth0-tx-0-21swapper/008:49:210
29815050,0irq/29-eth0-tx-0-21swapper/007:32:000
29805050,0irq/28-eth0-rx-734-21grep11:26:553
29805050,0irq/28-eth0-rx-7253-21irqcore08:56:573
29805050,0irq/28-eth0-rx-29986-21sh09:51:513
29805050,0irq/28-eth0-rx-29073-21cut11:41:583
29805050,0irq/28-eth0-rx-15045-21aten_r1power_po10:01:523
29805050,0irq/28-eth0-rx-1462-21tr12:21:593
29805050,0irq/28-eth0-rx-12692-21ssh10:56:283
29805050,0irq/28-eth0-rx-1234-21irqcore10:11:583
29805050,0irq/28-eth0-rx-0-21swapper/312:46:563
29805050,0irq/28-eth0-rx-0-21swapper/312:36:593
29805050,0irq/28-eth0-rx-0-21swapper/312:26:573
29805050,0irq/28-eth0-rx-0-21swapper/312:06:493
29805050,0irq/28-eth0-rx-0-21swapper/310:21:573
29805050,0irq/28-eth0-rx-0-21swapper/309:31:193
27150,0ktimersoftd/20-21swapper/212:13:532
27150,0ktimersoftd/20-21swapper/211:37:282
27150,0ktimersoftd/20-21swapper/207:34:212
259950,0migration/26513-21latency_hist11:11:412
259950,0migration/229069-21gltestperf10:46:552
259950,0migration/217157-21sendmail_mailqu10:37:042
259950,0migration/216494-21latency_hist07:56:402
259950,0migration/213887-21kthreadcore11:51:592
249950,0watchdog/2666-21kthreadcore09:12:002
249950,0watchdog/214444-21kthreadcore08:36:592
19150,0ktimersoftd/10-21swapper/109:34:341
179950,0migration/19480-21kthreadcore11:11:581
179950,0migration/19096-21taskset09:18:131
179950,0migration/15136-21taskset07:23:371
179950,0migration/13671-21sh11:46:561
179950,0migration/13203-21munin-node10:31:551
179950,0migration/128456-21taskset12:01:441
179950,0migration/127188-21sh11:58:511
179950,0migration/125266-21kthreadcore10:42:001
179950,0migration/123266-21kthreadcore07:36:591
179950,0migration/123005-21munin-node07:57:061
179950,0migration/119714-21unixbench_singl10:57:081
179950,0migration/119669-21kthreadcore11:36:591
179950,0migration/116960-21sh11:35:401
179950,0migration/115616-21missed_timers09:22:001
179950,0migration/114478-21idleruntime12:11:571
179950,0migration/112489-21taskset08:13:131
179950,0migration/112453-21sh09:57:021
169950,0watchdog/129356-21kthreadcore12:37:001
149950,0migration/08712-21kthreadcore09:36:590
149950,0migration/07265-21kthreadcore12:06:580
149950,0migration/0496-21taskset10:28:080
149950,0migration/04718-21kthreadcore11:46:580
149950,0migration/03847-21kthreadcore08:31:580
149950,0migration/030683-21latency_hist12:21:410
149950,0migration/030321-21kthreadcore12:01:580
149950,0migration/029502-21taskset11:05:080
149950,0migration/028080-21fschecks_time08:26:540
149950,0migration/02788-21fschecks_time07:46:550
149950,0migration/02741-21kthreadcore08:06:580
149950,0migration/026038-21latency_hist11:41:410
149950,0migration/025986-21kthreadcore10:06:580
149950,0migration/024463-21kthreadcore07:36:590
149950,0migration/023663-21switchtime10:22:040
149950,0migration/022760-21kthreadcore08:21:580
149950,0migration/018232-21latency_hist09:26:410
149950,0migration/017351-21kthreadcore10:01:580
149950,0migration/016601-21kthreadcore12:12:000
149950,0migration/016576-21kthreadcore11:52:000
149950,0migration/015908-21taskset07:52:100
149950,0migration/013900-21runrttasks11:13:270
149950,0migration/012744-21timerandwakeup09:57:060
149950,0migration/011632-21kthreadcore11:31:590
149950,0migration/010121-21fschecks_count09:21:550
8305040,0irq/26-0000:00:0-21swapper/309:16:413
339940,0migration/325438-21mdstat10:42:003
339940,0migration/317627-21kthreadcore08:17:013
339940,0migration/311645-21kthreadcore07:51:583
339940,0migration/310631-21gltestperf09:21:553
329940,0watchdog/325687-21kthreadcore09:47:003
329940,0watchdog/30-21swapper/309:12:003
329940,0watchdog/30-21swapper/308:36:593
329940,0watchdog/30-21swapper/308:01:513
305349944,0cyclictest0-21swapper/211:43:182
305349943,0cyclictest5459-21awk10:51:552
305349943,0cyclictest3571-21lldpd11:21:432
305349943,0cyclictest3571-21lldpd08:51:412
305349943,0cyclictest3571-21lldpd08:47:122
305349943,0cyclictest3571-21lldpd08:11:422
305349943,0cyclictest3571-21lldpd07:47:412
305349943,0cyclictest3306-21awk08:31:562
305349943,0cyclictest3250-21irqbalance11:16:472
305349943,0cyclictest3250-21irqbalance11:06:572
305349943,0cyclictest3250-21irqbalance10:27:172
305349943,0cyclictest3250-21irqbalance09:26:472
305349943,0cyclictest3250-21irqbalance08:21:472
305349943,0cyclictest3250-21irqbalance08:17:072
305349943,0cyclictest14176-21awk09:01:562
305349940,0cyclictest0-21swapper/209:19:062
305339944,0cyclictest0-21swapper/109:52:411
305339943,0cyclictest3571-21lldpd12:16:431
305339943,0cyclictest3524-21snmpd10:47:401
305339943,0cyclictest3524-21snmpd10:21:551
305339943,0cyclictest3524-21snmpd09:16:401
305339943,0cyclictest3524-21snmpd08:16:541
305339943,0cyclictest3524-21snmpd08:08:391
305339943,0cyclictest28292-21awk07:41:561
305339943,0cyclictest22371-21awk09:46:571
305339943,0cyclictest21362-21awk08:21:571
305329944,0cyclictest0-21swapper/011:19:440
305329943,0cyclictest8712-21sadc11:31:400
305329943,0cyclictest17665-21awk07:56:560
305329940,0cyclictest0-21swapper/008:16:400
29815040,0irq/29-eth0-tx-0-21swapper/212:21:442
29815040,0irq/29-eth0-tx-0-21swapper/212:17:062
29815040,0irq/29-eth0-tx-0-21swapper/211:02:422
29815040,0irq/29-eth0-tx-0-21swapper/210:16:552
29815040,0irq/29-eth0-tx-0-21swapper/210:07:392
29815040,0irq/29-eth0-tx-0-21swapper/209:31:462
29815040,0irq/29-eth0-tx-0-21swapper/008:16:540
29815040,0irq/29-eth0-tx-0-21swapper/007:26:590
29805040,0irq/28-eth0-rx-9425-21df_inode11:31:543
29805040,0irq/28-eth0-rx-6314-21runrttasks08:08:283
29805040,0irq/28-eth0-rx-24716-21kthreadcore09:06:593
29805040,0irq/28-eth0-rx-0-21swapper/311:21:413
29805040,0irq/28-eth0-rx-0-21swapper/310:56:543
259940,0migration/28265-21kthreadcore08:56:582
259940,0migration/27043-21kthreadcore09:36:592
259940,0migration/23678-21kthreadcore08:06:582
259940,0migration/232080-21kthreadcore09:51:572
259940,0migration/231820-21kthreadcore08:26:582
259940,0migration/230370-21taskset08:02:572
259940,0migration/223148-21kthreadcore09:06:582
259940,0migration/221190-21latency_hist09:46:412
259940,0migration/217663-21df_inode10:21:522
259940,0migration/217562-21gltestperf08:41:542
259940,0migration/212607-21kthreadcore07:51:592
259940,0migration/21123-21kthreadcore07:21:582
249940,0watchdog/232398-21kthreadcore07:41:592
249940,0watchdog/213762-21tune2fs10:56:562
249940,0watchdog/211511-21missed_timers07:26:592
179940,0migration/19039-21kthreadcore08:56:581
179940,0migration/17675-21kthreadcore07:47:001
179940,0migration/16372-21kernelversion12:06:581
179940,0migration/13834-21kthreadcore11:26:591
179940,0migration/129139-21kthreadcore08:46:591
179940,0migration/128767-21kthreadcore11:41:581
179940,0migration/127596-21kthreadcore11:21:581
179940,0migration/123836-21kthreadcore11:01:581
179940,0migration/12248-21aten_r1power_fr08:31:521
179940,0migration/120390-21kthreadcore09:26:571
179940,0migration/115662-21kthreadcore07:31:581
179940,0migration/11096-21irqcore10:11:581
169940,0watchdog/131247-21cut10:27:001
169940,0watchdog/123432-21ssh12:34:521
169940,0watchdog/119410-21kthreadcore11:17:001
169940,0watchdog/118986-21memory09:01:591
169940,0watchdog/116195-21kthreadcore11:52:001
169940,0watchdog/115165-21ssh12:30:521
169940,0watchdog/112490-21ssh09:41:481
169940,0watchdog/111327-21ssh10:52:401
169940,0watchdog/10-21swapper/110:37:001
169940,0watchdog/10-21swapper/109:37:001
169940,0watchdog/10-21swapper/108:41:551
169940,0watchdog/10-21swapper/108:36:591
149940,0migration/029883-21kthreadcore10:46:580
149940,0migration/028780-21kthreadcore11:21:590
149940,0migration/027597-21kthreadcore12:17:000
149940,0migration/027487-21if_eth1.311:41:570
149940,0migration/018880-21python09:42:060
149940,0migration/016977-21cpuspeed_turbos08:41:530
149940,0migration/015391-21kthreadcore10:37:000
149940,0migration/010103-21fschecks_count08:36:550
329930,0watchdog/30-21swapper/308:26:513
329930,0watchdog/30-21swapper/307:46:553
329930,0watchdog/30-21swapper/307:26:433
305339932,0cyclictest32071-21awk08:51:561
305329933,0cyclictest0-21swapper/010:52:370
305329932,0cyclictest9273-21tr12:26:580
305329932,0cyclictest4885-21cut10:31:570
305329932,0cyclictest4433-21tr12:41:590
305329932,0cyclictest3524-21snmpd12:40:050
305329932,0cyclictest31547-21awk11:06:560
305329932,0cyclictest31047-21awk09:51:560
305329932,0cyclictest30986-21cpuspeed_turbos07:21:530
305329932,0cyclictest24546-21grep08:01:540
305329932,0cyclictest16834-21awk12:31:560
305329932,0cyclictest14164-21awk10:56:580
305329930,0cyclictest0-21swapper/008:51:530
169930,0watchdog/19416-21diskmemload12:46:521
169930,0watchdog/16314-21runrttasks11:09:081
169930,0watchdog/10-21swapper/108:26:511
169930,0watchdog/10-21swapper/108:01:511
305329921,0cyclictest6314-21runrttasks09:01:410
305329921,0cyclictest0-21swapper/012:46:450
305329920,0cyclictest0-21swapper/011:56:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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