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2026-08-21 - 10:38
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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 Fri Aug 21, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1193625453,0sleep00-21swapper/019:27:300
1188623627,0sleep10-21swapper/119:26:551
1209523525,0sleep20-21swapper/219:29:242
1207123228,0sleep30-21swapper/319:29:053
8305060,0irq/26-0000:00:15999-21munin-run19:55:433
339960,0migration/37744-21munin-node23:11:053
339960,0migration/331916-21sh21:35:193
339960,0migration/329237-21kthreadcore00:41:033
339960,0migration/327365-21aten_r1power_cu21:10:543
339960,0migration/322122-21kthreadcore23:41:013
339960,0migration/315953-21sh22:58:563
339960,0migration/312831-21sh23:53:523
29815060,0irq/29-eth0-tx-19722-21munin-node19:36:090
29805060,0irq/28-eth0-rx-28489-21sh00:01:043
29805060,0irq/28-eth0-rx-28332-21kthreadcore00:21:033
29805060,0irq/28-eth0-rx-25749-21cut20:46:003
29805060,0irq/28-eth0-rx-20625-21iostat_ios00:56:023
29805060,0irq/28-eth0-rx-19857-21cut22:41:033
29805060,0irq/28-eth0-rx-12459-21iostat_ios22:01:003
259960,0migration/27782-21kthreadcore00:46:042
149960,0migration/025100-21sh23:05:420
149960,0migration/022115-21sh22:42:360
149960,0migration/012042-21sh23:51:350
122849960,0cyclictest0-21swapper/023:45:540
122849960,0cyclictest0-21swapper/022:32:360
8305050,0irq/26-0000:00:0-21swapper/321:30:443
339950,0migration/38508-21taskset19:47:193
339950,0migration/35211-21taskset20:52:403
339950,0migration/33395-21fschecks_time21:55:593
339950,0migration/327708-21fschecks_time19:40:563
339950,0migration/325410-21sh23:21:163
339950,0migration/32527-21cpuspeed_turbos00:45:573
339950,0migration/318577-21unixbench_multi23:36:113
339950,0migration/316014-21kthreadcore23:56:043
339950,0migration/31475-21taskset20:28:353
339950,0migration/314146-21idleruntime22:21:003
339950,0migration/312838-21aten2.4-expect20:15:553
339950,0migration/311599-21kthreadcore20:35:593
339950,0migration/311378-21sh22:16:263
329950,0watchdog/3502-21sh23:08:433
329950,0watchdog/33524-21snmpd22:10:433
329950,0watchdog/328834-21kthreadcore22:46:033
329950,0watchdog/323825-21kthreadcore19:36:023
329950,0watchdog/322163-21cut21:06:023
329950,0watchdog/31070-21grep22:11:033
329950,0watchdog/30-21swapper/319:56:023
29815050,0irq/29-eth0-tx-7545-21memory23:11:032
29815050,0irq/29-eth0-tx-24370-21fschecks_count21:30:570
29815050,0irq/29-eth0-tx-24228-21munin-node00:20:592
29815050,0irq/29-eth0-tx-20460-21grep23:21:022
29815050,0irq/29-eth0-tx-0-21swapper/200:20:352
29815050,0irq/29-eth0-tx-0-21swapper/020:25:450
29805050,0irq/28-eth0-rx-9794-21ssh23:31:083
29805050,0irq/28-eth0-rx-8912-21sed00:30:443
29805050,0irq/28-eth0-rx-4070-21cut21:16:003
29805050,0irq/28-eth0-rx-28922-21kthreadcore23:26:013
29805050,0irq/28-eth0-rx-24809-21cut22:26:033
29805050,0irq/28-eth0-rx-11053-21kthreadcore20:56:013
29805050,0irq/28-eth0-rx-0-21swapper/323:15:553
29805050,0irq/28-eth0-rx-0-21swapper/322:37:373
29805050,0irq/28-eth0-rx-0-21swapper/321:50:573
29805050,0irq/28-eth0-rx-0-21swapper/321:46:063
29805050,0irq/28-eth0-rx-0-21swapper/321:40:573
29805050,0irq/28-eth0-rx-0-21swapper/300:51:093
29805050,0irq/28-eth0-rx-0-21swapper/300:06:003
27150,0ktimersoftd/20-21swapper/223:00:452
27150,0ktimersoftd/20-21swapper/200:09:012
259950,0migration/224875-21irqcore22:46:012
259950,0migration/216911-21cpuspeed_turbos21:25:562
249950,0watchdog/29279-21cpuspeed_turbos19:50:542
249950,0watchdog/226104-21cut23:05:592
249950,0watchdog/217735-21kthreadcore22:21:032
249950,0watchdog/20-21swapper/222:30:592
179950,0migration/16303-21latency_hist22:35:441
179950,0migration/126534-21timerwakeupswit21:06:101
179950,0migration/124505-21sh23:03:551
179950,0migration/124442-21fschecks_time20:45:561
179950,0migration/120888-21idleruntime20:20:591
179950,0migration/113751-21unixbench-2d00:11:131
179950,0migration/113219-21kthreadcore21:21:011
179950,0migration/112716-21aten_r1power_en20:15:551
169950,0watchdog/1349-21timerandwakeup21:51:111
149950,0migration/09219-21kthreadcore20:56:010
149950,0migration/08250-21kthreadcore23:31:020
149950,0migration/07866-21kthreadcore20:11:010
149950,0migration/06248-21kthreadcore00:46:030
149950,0migration/04005-21kthreadcore20:31:000
149950,0migration/03951-21irqcore21:56:020
149950,0migration/031239-21kthreadcore21:11:010
149950,0migration/027464-21taskset23:42:070
149950,0migration/02480-21kthreadcore00:06:040
149950,0migration/023837-21kthreadcore22:06:030
149950,0migration/022384-21aten_r1power_en00:00:550
149950,0migration/021292-21kthreadcore20:41:010
149950,0migration/01958-21munin-node23:10:570
149950,0migration/019096-21needreboot22:21:040
149950,0migration/019068-21kthreadcore00:16:040
149950,0migration/01736-21sh23:26:500
149950,0migration/017118-21gltestperf19:55:540
149950,0migration/015620-21unixbench-2d20:36:070
149950,0migration/015357-21needreboot21:21:020
149950,0migration/014027-21kthreadcore19:51:000
149950,0migration/013477-21hwlatdetect19:30:570
149950,0migration/012753-21kthreadcore00:51:020
149950,0migration/011994-21aten_r1power_cu23:35:560
149950,0migration/011823-21kthreadcore00:11:050
149950,0migration/010662-21kthreadcore21:41:000
149950,0migration/010322-21irqcore00:31:000
122869955,0cyclictest0-21swapper/223:41:442
122869955,0cyclictest0-21swapper/222:42:092
122869955,0cyclictest0-21swapper/222:28:162
122869955,0cyclictest0-21swapper/222:06:122
122869955,0cyclictest0-21swapper/200:40:332
122869952,0cyclictest14684-21sadc22:40:442
122859950,0cyclictest0-21swapper/123:40:571
122849955,0cyclictest0-21swapper/021:01:090
122849955,0cyclictest0-21swapper/020:46:010
8305040,0irq/26-0000:00:0-21swapper/200:40:442
8305040,0irq/26-0000:00:0-21swapper/200:11:362
339940,0migration/330289-21irqcore23:46:003
339940,0migration/322843-21kthreadcore20:21:023
339940,0migration/319858-21kthreadcore20:41:013
339940,0migration/316884-21if_eth1.200:16:023
339940,0migration/316430-21kthreadcore19:31:003
339940,0migration/31507-21if_eth100:26:033
339940,0migration/310892-21irqrtprio21:21:003
329940,0watchdog/38449-21irqcore00:11:033
329940,0watchdog/30-21swapper/323:00:553
329940,0watchdog/30-21swapper/322:30:593
329940,0watchdog/30-21swapper/321:36:033
29815040,0irq/29-eth0-tx-32721-21ssh00:25:492
29815040,0irq/29-eth0-tx-30918-21telnet20:50:560
29815040,0irq/29-eth0-tx-24699-21ssh21:47:202
29815040,0irq/29-eth0-tx-14027-21ssh00:31:022
29815040,0irq/29-eth0-tx-10979-21kthreadcore21:41:002
29815040,0irq/29-eth0-tx-10888-21ssh00:50:542
29815040,0irq/29-eth0-tx-0-21swapper/223:50:562
29815040,0irq/29-eth0-tx-0-21swapper/223:46:022
29815040,0irq/29-eth0-tx-0-21swapper/223:15:522
29815040,0irq/29-eth0-tx-0-21swapper/222:55:502
29815040,0irq/29-eth0-tx-0-21swapper/222:15:502
29815040,0irq/29-eth0-tx-0-21swapper/221:55:502
29805040,0irq/28-eth0-rx-0-21swapper/322:50:543
29805040,0irq/28-eth0-rx-0-21swapper/300:36:003
259940,0migration/28637-21runrttasks20:31:462
259940,0migration/25130-21kthreadcore23:31:012
259940,0migration/232475-21aten_r1power_fr21:35:562
259940,0migration/230830-21cpuspeed_turbos20:05:552
259940,0migration/229330-21sh22:10:592
259940,0migration/228903-21kthreadcore21:31:022
259940,0migration/227277-21aten2.4-expect23:25:552
259940,0migration/224742-21kthreadcore00:01:022
259940,0migration/224033-21kthreadcore19:36:022
259940,0migration/212819-21kernelversion22:01:002
259940,0migration/211287-21latency20:11:022
259940,0migration/211165-21kthreadcore20:35:592
249940,0watchdog/227050-21fschecks_time21:50:592
249940,0watchdog/20-21swapper/223:55:592
19140,0ktimersoftd/10-21swapper/100:27:371
179940,0migration/19345-21fschecks_count21:40:561
179940,0migration/16960-21kthreadcore21:16:011
179940,0migration/1526-21kthreadcore23:26:021
179940,0migration/14607-21kthreadcore19:46:011
179940,0migration/14103-21kthreadcore00:46:021
179940,0migration/13283-21kthreadcore23:11:021
179940,0migration/131160-21cpuspeed_turbos00:05:581
179940,0migration/127968-21kthreadcore00:01:031
179940,0migration/127199-21kthreadcore22:46:021
179940,0migration/125299-21munin-node21:31:001
179940,0migration/117499-21latency_hist21:45:431
179940,0migration/116488-21runrttasks23:16:071
179940,0migration/115654-21runrttasks22:58:041
179940,0migration/115066-21kthreadcore22:21:021
179940,0migration/114867-21munin-node23:56:021
179940,0migration/113138-21kthreadcore22:01:001
179940,0migration/112364-21sh22:19:221
169940,0watchdog/18948-21ssh00:30:471
169940,0watchdog/1872-21perl21:35:591
169940,0watchdog/132178-21ssh23:06:231
169940,0watchdog/132074-21ssh00:24:351
169940,0watchdog/123826-21kthreadcore19:36:021
169940,0watchdog/123820-21ssh00:20:231
169940,0watchdog/122244-21pmu-power19:56:021
169940,0watchdog/10-21swapper/123:36:031
169940,0watchdog/10-21swapper/122:11:031
149940,0migration/06274-21kthreadcore19:46:020
149940,0migration/028042-21kthreadcore21:51:030
149940,0migration/022109-21kthreadcore21:26:020
149940,0migration/017800-21sh23:18:590
122869943,0cyclictest3571-21lldpd22:50:512
122869943,0cyclictest3524-21snmpd21:24:122
122869943,0cyclictest3250-21irqbalance21:15:502
122869943,0cyclictest3250-21irqbalance21:11:402
122869943,0cyclictest3250-21irqbalance21:05:502
122869943,0cyclictest3250-21irqbalance21:01:502
122869943,0cyclictest3250-21irqbalance20:56:402
122869943,0cyclictest3250-21irqbalance20:51:002
122869943,0cyclictest3250-21irqbalance20:00:502
122869943,0cyclictest3250-21irqbalance19:55:502
122869943,0cyclictest3250-21irqbalance19:45:502
122869943,0cyclictest3250-21irqbalance19:41:002
122869943,0cyclictest3250-21irqbalance19:31:592
122869943,0cyclictest28227-21awk20:26:002
122869943,0cyclictest24776-21awk20:45:582
122869943,0cyclictest20942-21awk20:20:592
122869943,0cyclictest20575-21awk00:56:012
122869943,0cyclictest19643-21sadc20:20:432
122869943,0cyclictest13102-21awk23:36:012
122869940,0cyclictest0-21swapper/220:41:322
122859944,0cyclictest0-21swapper/122:27:101
122859943,0cyclictest629-21awk22:50:591
122859943,0cyclictest3801-21awk21:56:011
122859943,0cyclictest3524-21snmpd23:48:591
122859943,0cyclictest3524-21snmpd23:22:291
122859943,0cyclictest3524-21snmpd20:33:121
122859943,0cyclictest28178-21awk20:26:001
122859943,0cyclictest27152-21awk00:41:001
122859943,0cyclictest24528-21awk20:00:581
122859943,0cyclictest13963-21awk21:00:591
122859943,0cyclictest11950-21awk00:51:001
122859940,0cyclictest0-21swapper/100:56:091
122849943,0cyclictest8538-21sadc21:40:430
122849943,0cyclictest644-21awk22:51:000
122849943,0cyclictest3571-21lldpd22:18:520
122849943,0cyclictest3284-21awk21:15:590
122849943,0cyclictest31631-21awk20:05:580
122849943,0cyclictest27936-21awk19:40:570
122849943,0cyclictest22763-21awk22:26:000
122849943,0cyclictest14890-21awk23:56:020
122849943,0cyclictest13785-21awk20:15:590
122849942,0cyclictest23909-21diskstats22:45:570
122849940,0cyclictest0-21swapper/000:27:500
29815030,0irq/29-eth0-tx-0-21swapper/021:05:550
29815030,0irq/29-eth0-tx-0-21swapper/020:20:550
29805030,0irq/28-eth0-rx-0-21swapper/321:00:563
29805030,0irq/28-eth0-rx-0-21swapper/320:30:543
29805030,0irq/28-eth0-rx-0-21swapper/320:10:473
29805030,0irq/28-eth0-rx-0-21swapper/320:05:543
29805030,0irq/28-eth0-rx-0-21swapper/320:02:423
19130,0ktimersoftd/124976-21sh00:38:161
179930,0migration/18700-21kthreadcore23:51:021
179930,0migration/116299-21irqcore22:41:021
179930,0migration/11491-21kthreadcore20:06:001
169930,0watchdog/112037-21munin-node20:11:101
169930,0watchdog/10-21swapper/123:30:591
169930,0watchdog/10-21swapper/122:30:591
169930,0watchdog/10-21swapper/122:05:511
169930,0watchdog/10-21swapper/120:35:581
169930,0watchdog/10-21swapper/119:50:541
149930,0migration/029998-21runrttasks20:01:350
149930,0migration/013220-21sh22:36:250
122859932,0cyclictest3524-21snmpd21:26:271
122859932,0cyclictest3524-21snmpd20:50:501
122859932,0cyclictest28081-21tune2fs21:10:571
122859932,0cyclictest18723-21sensors19:31:041
122849933,0cyclictest3571-21lldpd21:47:200
122849933,0cyclictest0-21swapper/022:03:160
122849932,0cyclictest3524-21snmpd23:08:290
122849932,0cyclictest25376-21awk00:21:000
122849932,0cyclictest14634-21sensors22:56:060
122849931,0cyclictest0-21swapper/022:11:020
122849930,0cyclictest0-21swapper/023:21:030
169920,0watchdog/10-21swapper/120:40:461
169920,0watchdog/10-21swapper/119:40:461
122859921,0cyclictest5695-21cat20:55:441
122849920,0cyclictest19355-21taskset00:55:480
122849920,0cyclictest0-21swapper/000:40:540
122849920,0cyclictest0-21swapper/000:35:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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