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2026-01-05 - 13:48
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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 highest latencies:
System rack1slot2.osadl.org (updated Mon Jan 05, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
387323626,0sleep30-21swapper/307:09:303
2950223624,0sleep00-21swapper/007:07:020
403223425,0sleep20-21swapper/207:11:212
403122925,0sleep10-21swapper/107:11:201
41669976,0cyclictest30025-21ssh11:07:162
41639974,0cyclictest22583-21munin-run08:31:580
41659965,0cyclictest3134-21dump-pmu-power11:46:591
41659965,0cyclictest10930-21fschecks_count12:27:141
41659960,0cyclictest15680-21diskmemload10:36:381
41659960,0cyclictest0-21swapper/112:38:391
41639966,0cyclictest0-21swapper/009:55:060
41639960,0cyclictest0-21swapper/010:47:360
339960,0migration/38588-21sh09:22:483
339960,0migration/332032-21latency_hist11:26:593
339960,0migration/326316-21aten2.4-expect08:12:103
339960,0migration/324358-21cpuspeed_turbos09:52:133
339960,0migration/314800-21sh10:38:453
339960,0migration/314242-21sh12:08:393
29815060,0irq/29-eth0-tx-8709-21munin-node09:07:140
29815060,0irq/29-eth0-tx-19083-21munin-node08:07:150
29805060,0irq/28-eth0-rx-30407-21if_err_eth1.309:37:163
29805060,0irq/28-eth0-rx-25214-21df12:17:113
29805060,0irq/28-eth0-rx-17411-21timerwakeupswit09:27:253
29805060,0irq/28-eth0-rx-16340-21munin-node09:47:173
29805060,0irq/28-eth0-rx-11823-21python11:12:233
8305050,0irq/26-0000:00:22336-21latency10:42:192
41669955,0cyclictest0-21swapper/209:26:412
41669955,0cyclictest0-21swapper/208:07:232
41669954,0cyclictest17577-21tr12:12:192
41669950,0cyclictest0-21swapper/211:54:152
41669950,0cyclictest0-21swapper/211:30:272
41669950,0cyclictest0-21swapper/209:14:422
41659955,0cyclictest0-21swapper/112:22:351
41659955,0cyclictest0-21swapper/111:59:521
41659950,0cyclictest0-21swapper/112:10:071
41659950,0cyclictest0-21swapper/110:39:561
41659950,0cyclictest0-21swapper/109:28:501
41639955,0cyclictest0-21swapper/012:35:460
41639955,0cyclictest0-21swapper/012:17:280
41639955,0cyclictest0-21swapper/011:38:410
41639955,0cyclictest0-21swapper/011:17:240
41639955,0cyclictest0-21swapper/010:57:320
41639950,0cyclictest0-21swapper/011:06:220
4150,0ktimersoftd/00-21swapper/011:53:210
339950,0migration/39369-21fschecks_time09:07:113
339950,0migration/37799-21taskset08:17:433
339950,0migration/330155-21munin-node08:37:113
339950,0migration/328439-21aten_r1power_fr12:37:113
339950,0migration/32666-21munin-node12:22:163
339950,0migration/325825-21kthreadcore07:47:173
339950,0migration/320973-21kthreadcore08:07:173
339950,0migration/320763-21kthreadcore09:12:183
339950,0migration/320527-21taskset08:52:133
339950,0migration/320088-21kthreadcore08:27:173
339950,0migration/319956-21latency_hist09:31:593
339950,0migration/319341-21taskset12:32:033
339950,0migration/317041-21fschecks_count10:42:133
339950,0migration/314168-21latency08:22:193
339950,0migration/312938-21kthreadcore12:27:183
339950,0migration/311275-21kthreadcore10:02:173
339950,0migration/311119-21taskset07:13:513
329950,0watchdog/34907-21ssh12:02:503
329950,0watchdog/329841-21munin-node07:52:103
329950,0watchdog/327532-21fschecks_time11:42:143
329950,0watchdog/323281-21kthreadcore11:02:183
329950,0watchdog/322979-21cpu08:32:143
329950,0watchdog/316129-21fschecks_time07:42:143
329950,0watchdog/313878-21perl10:22:143
329950,0watchdog/313674-21iostat_ios11:52:183
29815050,0irq/29-eth0-tx-9393-21ssh10:54:042
29815050,0irq/29-eth0-tx-8736-21cut12:07:192
29815050,0irq/29-eth0-tx-29749-21kthreadcore11:42:192
29815050,0irq/29-eth0-tx-23317-21munin-node11:22:212
29815050,0irq/29-eth0-tx-22532-21munin-node07:47:180
29815050,0irq/29-eth0-tx-21332-21munin-node11:57:142
29815050,0irq/29-eth0-tx-19391-21munin-node12:32:192
29815050,0irq/29-eth0-tx-14645-21ssh10:38:222
29815050,0irq/29-eth0-tx-0-21swapper/211:33:182
29815050,0irq/29-eth0-tx-0-21swapper/211:04:142
29815050,0irq/29-eth0-tx-0-21swapper/210:32:182
29815050,0irq/29-eth0-tx-0-21swapper/210:13:482
29815050,0irq/29-eth0-tx-0-21swapper/209:57:222
29815050,0irq/29-eth0-tx-0-21swapper/209:20:262
29815050,0irq/29-eth0-tx-0-21swapper/008:57:150
29815050,0irq/29-eth0-tx-0-21swapper/007:54:480
29815050,0irq/29-eth0-tx-0-21swapper/007:20:380
29805050,0irq/28-eth0-rx-6494-21kthreadcore08:42:173
29805050,0irq/28-eth0-rx-6314-21runrttasks11:11:443
29805050,0irq/28-eth0-rx-4597-21kthreadcore09:57:163
29805050,0irq/28-eth0-rx-25534-21cpu10:47:123
29805050,0irq/28-eth0-rx-25436-21ssh11:39:253
29805050,0irq/28-eth0-rx-15409-21cat11:17:153
29805050,0irq/28-eth0-rx-13366-21iostat_ios08:47:203
29805050,0irq/28-eth0-rx-11797-21perl10:57:143
29805050,0irq/28-eth0-rx-0-21swapper/312:15:053
29805050,0irq/28-eth0-rx-0-21swapper/311:47:163
29805050,0irq/28-eth0-rx-0-21swapper/311:32:083
29805050,0irq/28-eth0-rx-0-21swapper/311:27:183
29805050,0irq/28-eth0-rx-0-21swapper/310:52:183
29805050,0irq/28-eth0-rx-0-21swapper/310:33:073
29805050,0irq/28-eth0-rx-0-21swapper/309:42:083
29805050,0irq/28-eth0-rx-0-21swapper/309:17:123
259950,0migration/26050-21kthreadcore10:17:182
259950,0migration/232745-21kthreadcore09:37:182
259950,0migration/230632-21unixbench-2d09:52:272
259950,0migration/222899-21munin-node10:27:142
259950,0migration/217765-21kthreadcore11:17:182
259950,0migration/216850-21switchtime12:27:262
249950,0watchdog/230982-21grep08:12:182
249950,0watchdog/217978-21kthreadcore09:47:182
249950,0watchdog/214460-21tr08:22:222
179950,0migration/16496-21latency09:57:171
179950,0migration/14691-21munin-node08:17:201
179950,0migration/132703-21kthreadcore08:37:171
179950,0migration/127725-21kthreadcore12:17:161
179950,0migration/124622-21fschecks_count09:52:141
179950,0migration/122519-21unixbench_singl09:12:261
179950,0migration/11586-21aten_r1power_cu09:22:101
179950,0migration/115685-21aten_r1power_fr08:27:101
169950,0watchdog/18313-21sensors_temp10:52:221
169950,0watchdog/124270-21tr12:32:191
169950,0watchdog/118809-21munin-node07:22:171
149950,0migration/09911-21kthreadcore08:42:170
149950,0migration/09202-21kthreadcore10:37:170
149950,0migration/0696-21kthreadcore08:37:170
149950,0migration/05885-21kthreadcore11:47:180
149950,0migration/032571-21switchtime08:12:250
149950,0migration/032397-21sh09:19:180
149950,0migration/030961-21kthreadcore11:07:180
149950,0migration/029961-21kthreadcore10:12:190
149950,0migration/028652-21taskset10:27:290
149950,0migration/027095-21munin-node07:27:150
149950,0migration/026368-21kthreadcore08:32:200
149950,0migration/025173-21kthreadcore11:57:170
149950,0migration/023155-21taskset09:14:160
149950,0migration/022130-21kthreadcore08:52:150
149950,0migration/021754-21latency_hist10:26:590
149950,0migration/02013-21fschecks_time08:17:150
149950,0migration/01936-21kthreadcore12:02:180
149950,0migration/016597-21aten_r1power_vo10:42:120
149950,0migration/015011-21kthreadcore10:02:190
149950,0migration/013692-21kthreadcore08:02:160
149950,0migration/013674-21taskset09:44:160
149950,0migration/011502-21kthreadcore12:07:200
8305040,0irq/26-0000:00:0-21swapper/209:02:232
41669943,0cyclictest9838-21awk09:07:132
41669943,0cyclictest3571-21lldpd07:50:202
41669943,0cyclictest3571-21lldpd07:37:502
41669943,0cyclictest3524-21snmpd08:45:452
41669943,0cyclictest3524-21snmpd07:55:142
41669943,0cyclictest3524-21snmpd07:27:142
41669943,0cyclictest12212-21needreboot09:42:162
41669943,0cyclictest10633-21awk10:02:152
41659944,0cyclictest0-21swapper/109:50:071
41659943,0cyclictest5461-21awk07:12:151
41659943,0cyclictest3571-21lldpd09:32:521
41659943,0cyclictest3524-21snmpd07:57:141
41659943,0cyclictest28628-21awk10:12:171
41659943,0cyclictest21057-21awk11:02:161
41659943,0cyclictest17514-21awk10:42:151
41659943,0cyclictest12899-21awk08:02:141
41659940,0cyclictest0-21swapper/107:53:461
41639944,0cyclictest0-21swapper/012:27:430
41639944,0cyclictest0-21swapper/010:32:570
41639944,0cyclictest0-21swapper/009:33:210
41639943,0cyclictest5697-21awk07:57:150
41639943,0cyclictest5068-21awk10:17:160
41639943,0cyclictest3571-21lldpd10:07:520
41639943,0cyclictest3571-21lldpd09:26:220
41639943,0cyclictest3524-21snmpd09:02:150
41639943,0cyclictest3524-21snmpd07:34:290
41639943,0cyclictest26242-21kworker/0:112:12:590
41639943,0cyclictest2592-21awk12:22:150
41639943,0cyclictest24526-21awk11:22:160
41639943,0cyclictest16177-21awk09:47:150
329940,0watchdog/36459-21kthreadcore10:17:183
329940,0watchdog/317595-21ntpq07:17:213
329940,0watchdog/30-21swapper/308:05:103
329940,0watchdog/30-21swapper/307:57:183
329940,0watchdog/30-21swapper/307:37:183
329940,0watchdog/30-21swapper/307:22:173
29815040,0irq/29-eth0-tx-3437-21munin-node11:47:282
29815040,0irq/29-eth0-tx-2842-21ssh12:37:462
29815040,0irq/29-eth0-tx-0-21swapper/212:22:212
29815040,0irq/29-eth0-tx-0-21swapper/211:37:172
29815040,0irq/29-eth0-tx-0-21swapper/210:22:002
29815040,0irq/29-eth0-tx-0-21swapper/210:07:162
29815040,0irq/29-eth0-tx-0-21swapper/209:27:082
29815040,0irq/29-eth0-tx-0-21swapper/007:42:250
29805040,0irq/28-eth0-rx-0-21swapper/311:57:163
29805040,0irq/28-eth0-rx-0-21swapper/310:28:083
29805040,0irq/28-eth0-rx-0-21swapper/310:12:013
29805040,0irq/28-eth0-rx-0-21swapper/310:07:293
259940,0migration/28438-21kthreadcore11:12:182
259940,0migration/24876-21fschecks_count07:12:132
259940,0migration/24808-21cpuspeed_turbos07:57:112
259940,0migration/230772-21df_inode12:02:132
259940,0migration/229044-21kthreadcore10:47:182
259940,0migration/227716-21munin-node08:57:152
259940,0migration/222340-21latency_hist07:46:592
259940,0migration/220874-21fschecks_time09:32:132
259940,0migration/220594-21irqcore08:52:142
259940,0migration/219642-21fschecks_time07:22:142
259940,0migration/218575-21unixbench-2d08:47:292
259940,0migration/21775-21sh07:32:132
259940,0migration/217129-21kernelversion08:27:162
259940,0migration/213841-21kthreadcore10:57:182
249940,0watchdog/21455-21df_abs08:17:142
249940,0watchdog/20-21swapper/212:17:112
249940,0watchdog/20-21swapper/208:32:142
179940,0migration/19819-21fschecks_time11:32:151
179940,0migration/18430-21kthreadcore08:42:171
179940,0migration/14637-21fschecks_count10:17:141
179940,0migration/14130-21fschecks_time11:47:131
179940,0migration/128612-21kthreadcore07:27:171
179940,0migration/12769-21kthreadcore07:32:171
179940,0migration/126945-21kthreadcore09:17:181
179940,0migration/125547-21taskset10:08:161
179940,0migration/125246-21latency_hist10:46:591
179940,0migration/124965-21kthreadcore08:52:151
179940,0migration/124247-21kthreadcore10:27:201
179940,0migration/120771-21kthreadcore12:12:201
179940,0migration/119833-21kthreadcore11:17:191
179940,0migration/114341-21kthreadcore07:17:191
179940,0migration/112725-21kthreadcore08:22:191
169940,0watchdog/17921-21cat09:42:141
169940,0watchdog/14622-21unixbench_multi12:02:261
169940,0watchdog/130171-21fschecks_time09:37:141
169940,0watchdog/128625-21cut11:22:181
169940,0watchdog/123771-21ssh11:37:181
169940,0watchdog/119500-21timerandwakeup10:22:261
169940,0watchdog/11671-21df09:02:101
169940,0watchdog/116171-21fschecks_time07:42:141
169940,0watchdog/115746-21grep10:57:181
169940,0watchdog/113204-21cut10:02:181
169940,0watchdog/10-21swapper/111:27:181
169940,0watchdog/10-21swapper/111:12:181
169940,0watchdog/10-21swapper/108:32:141
169940,0watchdog/10-21swapper/108:12:181
169940,0watchdog/10-21swapper/108:07:261
169940,0watchdog/10-21swapper/107:37:141
149940,0migration/0769-21cpuspeed_turbos09:57:110
149940,0migration/06541-21if_err_eth111:12:150
149940,0migration/05084-21runrttasks09:40:150
41669932,0cyclictest3571-21lldpd08:04:512
41669932,0cyclictest31117-21awk08:37:152
41669932,0cyclictest13266-21grep07:17:182
41659932,0cyclictest9745-21awk09:07:121
41659932,0cyclictest27612-21awk08:57:141
41659930,0cyclictest0-21swapper/108:47:511
41639933,0cyclictest3918-21kworker/0:210:52:120
41639933,0cyclictest26242-21kworker/0:112:37:130
41639933,0cyclictest26242-21kworker/0:111:32:250
41639933,0cyclictest17823-21kworker/0:207:37:020
41639933,0cyclictest17823-21kworker/0:207:22:060
41639933,0cyclictest16079-21kworker/0:007:12:080
41639933,0cyclictest12787-21kworker/0:008:22:060
41639932,0cyclictest939-21awk11:27:150
41639932,0cyclictest28057-21awk11:42:170
41639930,0cyclictest12588-21diskstats08:47:160
41639930,0cyclictest10710-21latency_hist09:26:590
329930,0watchdog/30-21swapper/309:02:143
329930,0watchdog/30-21swapper/309:00:503
329930,0watchdog/30-21swapper/307:32:183
29805030,0irq/28-eth0-rx-0-21swapper/307:27:113
179930,0migration/119692-21sh11:53:491
169930,0watchdog/10-21swapper/111:07:021
169930,0watchdog/10-21swapper/107:47:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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