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2026-07-18 - 00:56
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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 Fri Jul 17, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1819524737,0sleep10-21swapper/107:26:441
1811123626,0sleep30-21swapper/307:25:463
1139823026,0sleep00-21swapper/007:22:590
1797622723,0sleep20-21swapper/207:24:132
8305070,0irq/26-0000:00:7569-21grep11:02:543
8305060,0irq/26-0000:00:7289-21unixbench-2d08:23:233
339960,0migration/36580-21sh11:38:033
339960,0migration/33949-21sh10:05:553
339960,0migration/329779-21sh10:55:443
339960,0migration/326452-21sh09:59:083
339960,0migration/325414-21sh10:34:393
339960,0migration/324574-21latency_hist11:47:543
339960,0migration/31441-21sh11:16:033
339960,0migration/310960-21sh12:49:063
329960,0watchdog/326690-21perl07:33:083
29805060,0irq/28-eth0-rx-22429-21kthreadcore12:03:113
29805060,0irq/28-eth0-rx-1979-21kthreadcore11:33:123
29805060,0irq/28-eth0-rx-0-21swapper/311:03:203
183669965,0cyclictest23950-21perl10:18:062
183669960,0cyclictest0-21swapper/212:17:562
183669960,0cyclictest0-21swapper/212:07:032
183669960,0cyclictest0-21swapper/211:33:092
183669960,0cyclictest0-21swapper/211:20:132
183669960,0cyclictest0-21swapper/209:52:152
183669960,0cyclictest0-21swapper/207:33:122
183629960,0cyclictest0-21swapper/110:37:161
183629960,0cyclictest0-21swapper/109:42:151
149960,0migration/027442-21sh10:01:240
149960,0migration/022504-21sh12:03:110
149960,0migration/018373-21cpuspeed_turbos12:38:070
8305050,0irq/26-0000:00:16532-21latency_hist11:07:543
339950,0migration/38878-21kthreadcore09:33:133
339950,0migration/38374-21cpuspeed_turbos08:28:053
339950,0migration/35903-21fschecks_time12:13:093
339950,0migration/332204-21pmu-power09:03:153
339950,0migration/33127-21kthreadcore12:28:133
339950,0migration/330087-21kthreadcore10:38:123
339950,0migration/32860-21kthreadcore09:08:133
339950,0migration/32657-21kthreadcore09:28:123
339950,0migration/32657-21kthreadcore09:28:123
339950,0migration/323419-21aten_r1power_vo12:23:063
339950,0migration/320935-21aten_r1power_po11:28:083
339950,0migration/316253-21kthreadcore10:13:133
339950,0migration/314898-21taskset09:13:473
339950,0migration/313933-21kthreadcore11:23:123
339950,0migration/311343-21kthreadcore12:33:113
329950,0watchdog/36792-21processes07:38:163
329950,0watchdog/326744-21perl08:18:083
329950,0watchdog/322093-21cut08:58:123
329950,0watchdog/313181-21cut08:08:123
29815050,0irq/29-eth0-tx-7372-21ssh10:24:472
29815050,0irq/29-eth0-tx-26855-21grep10:53:122
29815050,0irq/29-eth0-tx-25903-21munin-node11:13:182
29815050,0irq/29-eth0-tx-18755-21munin-node08:13:110
29815050,0irq/29-eth0-tx-11429-21ssh09:53:112
29815050,0irq/29-eth0-tx-0-21swapper/212:08:202
29815050,0irq/29-eth0-tx-0-21swapper/209:45:242
29815050,0irq/29-eth0-tx-0-21swapper/009:28:020
29815050,0irq/29-eth0-tx-0-21swapper/009:28:020
29815050,0irq/29-eth0-tx-0-21swapper/009:03:040
29815050,0irq/29-eth0-tx-0-21swapper/008:53:160
29815050,0irq/29-eth0-tx-0-21swapper/008:34:550
29815050,0irq/29-eth0-tx-0-21swapper/008:08:150
29815050,0irq/29-eth0-tx-0-21swapper/007:38:060
29805050,0irq/28-eth0-rx-9296-21egrep10:28:073
29805050,0irq/28-eth0-rx-26405-21tr10:18:123
29805050,0irq/28-eth0-rx-19352-21ssh10:48:203
29805050,0irq/28-eth0-rx-18269-21ssh12:38:073
29805050,0irq/28-eth0-rx-0-21swapper/312:46:543
29805050,0irq/28-eth0-rx-0-21swapper/312:20:523
29805050,0irq/28-eth0-rx-0-21swapper/312:09:433
29805050,0irq/28-eth0-rx-0-21swapper/311:58:133
29805050,0irq/28-eth0-rx-0-21swapper/311:53:113
29805050,0irq/28-eth0-rx-0-21swapper/310:43:153
29805050,0irq/28-eth0-rx-0-21swapper/310:23:073
29805050,0irq/28-eth0-rx-0-21swapper/310:12:443
29805050,0irq/28-eth0-rx-0-21swapper/309:57:373
29805050,0irq/28-eth0-rx-0-21swapper/309:48:133
29805050,0irq/28-eth0-rx-0-21swapper/309:43:103
29805050,0irq/28-eth0-rx-0-21swapper/309:18:063
27150,0ktimersoftd/20-21swapper/211:54:172
27150,0ktimersoftd/20-21swapper/211:43:242
259950,0migration/231994-21gltestperf10:58:072
259950,0migration/214919-21sh11:04:172
259950,0migration/212633-21fschecks_time11:23:082
249950,0watchdog/2907-21munin-node10:38:172
249950,0watchdog/2804-21cut07:58:122
249950,0watchdog/230872-21pmu-power11:48:172
249950,0watchdog/221658-21kthreadcore12:38:132
249950,0watchdog/221157-21kthreadcore11:08:132
19150,0ktimersoftd/10-21swapper/109:32:571
183669955,0cyclictest0-21swapper/212:33:322
183669955,0cyclictest0-21swapper/212:16:122
183669955,0cyclictest0-21swapper/210:32:562
183669954,0cyclictest22263-21latency_hist08:37:542
183669950,0cyclictest0-21swapper/212:31:482
183669950,0cyclictest0-21swapper/210:11:202
183629955,0cyclictest0-21swapper/111:18:061
183629955,0cyclictest0-21swapper/109:54:331
183629950,0cyclictest0-21swapper/112:03:021
183629950,0cyclictest0-21swapper/111:23:371
183629950,0cyclictest0-21swapper/109:29:571
183629950,0cyclictest0-21swapper/109:29:571
183619950,0cyclictest15352-21munin-run11:42:540
179950,0migration/18236-21sh11:03:081
179950,0migration/17733-21timerandwakeup09:48:201
179950,0migration/15591-21munin-node12:13:071
179950,0migration/130783-21gltestperf11:33:081
179950,0migration/129805-21kthreadcore09:43:111
179950,0migration/129471-21kthreadcore07:33:121
179950,0migration/115334-21munin-node12:33:161
179950,0migration/112953-21sh11:38:181
179950,0migration/112515-21sh10:09:451
149950,0migration/09498-21sh09:51:480
149950,0migration/07093-21kthreadcore08:03:110
149950,0migration/06416-21kthreadcore08:23:150
149950,0migration/05450-21cpuspeed_turbos12:13:070
149950,0migration/03853-21taskset10:05:410
149950,0migration/031534-21kthreadcore08:43:110
149950,0migration/030499-21sh10:19:230
149950,0migration/030053-21kthreadcore11:48:140
149950,0migration/028972-21kthreadcore11:13:130
149950,0migration/027875-21kthreadcore08:18:120
149950,0migration/02725-21kthreadcore12:28:130
149950,0migration/02386-21munin-node11:53:080
149950,0migration/023791-21kthreadcore11:28:140
149950,0migration/022913-21kthreadcore08:58:130
149950,0migration/021837-21latency_hist12:57:540
149950,0migration/021823-21munin-node11:43:160
149950,0migration/021707-21smart_sda09:18:170
149950,0migration/019789-21kthreadcore10:33:130
149950,0migration/019695-21kthreadcore12:18:120
149950,0migration/016186-21munin-node09:53:130
149950,0migration/015491-21aten_r1power_en09:38:050
149950,0migration/014413-21kthreadcore11:23:120
149950,0migration/014370-21timerandwakeup08:28:180
149950,0migration/011682-21timerwakeupswit10:08:200
149950,0migration/010279-21kthreadcore09:33:130
8305040,0irq/26-0000:00:0-21swapper/309:22:543
8305040,0irq/26-0000:00:0-21swapper/307:32:523
339940,0migration/38523-21kthreadcore08:03:123
339940,0migration/329962-21fschecks_count07:58:073
339940,0migration/328878-21taskset07:53:483
339940,0migration/32009-21kthreadcore08:43:123
339940,0migration/317762-21kthreadcore07:48:123
339940,0migration/317247-21kthreadcore08:53:123
339940,0migration/311360-21taskset08:51:173
329940,0watchdog/328700-21python08:38:163
329940,0watchdog/323096-21kthreadcore08:13:123
329940,0watchdog/30-21swapper/311:43:133
29815040,0irq/29-eth0-tx-6411-21munin-node09:33:132
29815040,0irq/29-eth0-tx-22713-21munin-node09:23:140
29815040,0irq/29-eth0-tx-0-21swapper/212:48:052
29815040,0irq/29-eth0-tx-0-21swapper/212:23:052
29815040,0irq/29-eth0-tx-0-21swapper/211:58:102
29815040,0irq/29-eth0-tx-0-21swapper/211:28:012
29815040,0irq/29-eth0-tx-0-21swapper/210:28:152
29815040,0irq/29-eth0-tx-0-21swapper/210:03:012
29815040,0irq/29-eth0-tx-0-21swapper/009:08:150
29815040,0irq/29-eth0-tx-0-21swapper/008:49:580
29815040,0irq/29-eth0-tx-0-21swapper/007:58:050
29805040,0irq/28-eth0-rx-0-21swapper/312:53:133
29805040,0irq/28-eth0-rx-0-21swapper/311:18:123
29805040,0irq/28-eth0-rx-0-21swapper/309:38:343
259940,0migration/2388-21taskset08:22:062
259940,0migration/23020-21kthreadcore07:38:122
259940,0migration/228872-21kthreadcore12:43:122
259940,0migration/21737-21hwlatdetect08:23:122
259940,0migration/212520-21latency11:38:142
249940,0watchdog/220441-21ssh10:13:172
249940,0watchdog/220284-21grep09:58:092
249940,0watchdog/20-21swapper/212:53:332
249940,0watchdog/20-21swapper/209:23:132
183669943,0cyclictest9150-21awk08:28:082
183669943,0cyclictest9002-21awk07:43:092
183669943,0cyclictest5443-21awk08:03:102
183669943,0cyclictest3571-21lldpd08:48:142
183669943,0cyclictest3250-21irqbalance10:48:002
183669943,0cyclictest3250-21irqbalance10:43:302
183669943,0cyclictest3250-21irqbalance09:38:002
183669943,0cyclictest3250-21irqbalance09:28:302
183669943,0cyclictest3250-21irqbalance09:28:302
183669943,0cyclictest3250-21irqbalance09:18:102
183669943,0cyclictest3250-21irqbalance09:13:002
183669943,0cyclictest3250-21irqbalance09:08:202
183669943,0cyclictest3250-21irqbalance09:03:102
183669943,0cyclictest3250-21irqbalance08:58:102
183669943,0cyclictest3250-21irqbalance08:53:002
183669943,0cyclictest3250-21irqbalance08:43:502
183669943,0cyclictest3250-21irqbalance08:38:002
183669943,0cyclictest19639-21awk07:28:092
183669943,0cyclictest12633-21awk08:08:102
183629944,0cyclictest0-21swapper/108:02:561
183629943,0cyclictest9445-21awk09:13:111
183629943,0cyclictest5143-21irqcore10:43:121
183629943,0cyclictest3571-21lldpd11:16:461
183629943,0cyclictest3571-21lldpd11:00:161
183629943,0cyclictest3524-21snmpd09:24:311
183629943,0cyclictest3524-21snmpd08:47:011
183629943,0cyclictest3524-21snmpd08:38:151
183629943,0cyclictest3524-21snmpd08:23:151
183629943,0cyclictest3524-21snmpd07:44:151
183629943,0cyclictest29525-21awk12:08:091
183629943,0cyclictest29480-21awk10:03:111
183629943,0cyclictest28341-21awk10:38:111
183629943,0cyclictest20544-21awk09:58:111
183629943,0cyclictest18000-21awk11:08:111
183629943,0cyclictest16711-21awk11:43:091
183629943,0cyclictest16224-21awk07:48:091
183619943,0cyclictest3571-21lldpd10:43:460
183619943,0cyclictest3524-21snmpd10:50:470
183619943,0cyclictest16176-21awk07:48:090
183619943,0cyclictest11597-21awk11:58:110
179940,0migration/15830-21irqcore08:48:111
179940,0migration/1383-21fschecks_count12:28:081
179940,0migration/132469-21timerandwakeup09:03:191
179940,0migration/127591-21kthreadcore10:18:121
179940,0migration/125272-21taskset07:29:331
179940,0migration/121263-21sh10:14:041
179940,0migration/118696-21fschecks_count12:38:081
179940,0migration/117939-21kthreadcore10:48:131
179940,0migration/113755-21kthreadcore10:28:131
179940,0migration/113467-21kthreadcore08:28:111
179940,0migration/112239-21fschecks_time08:08:081
179940,0migration/111279-21fschecks_time11:58:091
169940,0watchdog/1806-21tr07:58:121
169940,0watchdog/14313-21kthreadcore07:38:121
169940,0watchdog/130870-21grep11:48:171
169940,0watchdog/128216-21grep08:18:121
169940,0watchdog/127607-21ssh11:28:331
169940,0watchdog/12526-21sh11:53:091
169940,0watchdog/122296-21ssh12:21:251
169940,0watchdog/119958-21hddtemp_smartct08:58:081
169940,0watchdog/112885-21ssh12:52:571
169940,0watchdog/10-21swapper/110:23:131
169940,0watchdog/10-21swapper/108:53:201
169940,0watchdog/10-21swapper/108:13:121
169940,0watchdog/10-21swapper/107:53:121
149940,0migration/0799-21kthreadcore11:33:120
149940,0migration/05059-21kthreadcore11:18:120
149940,0migration/031884-21kthreadcore10:38:130
149940,0migration/028330-21sh10:53:160
149940,0migration/027323-21kthreadcore07:53:130
149940,0migration/018601-21kthreadcore11:08:120
149940,0migration/013982-21kthreadcore10:28:130
149940,0migration/013636-21kthreadcore11:03:130
149940,0migration/012795-21kthreadcore07:43:120
329930,0watchdog/30-21swapper/308:34:043
29815030,0irq/29-eth0-tx-0-21swapper/009:13:060
29815030,0irq/29-eth0-tx-0-21swapper/008:38:050
29805030,0irq/28-eth0-rx-0-21swapper/307:43:053
249930,0watchdog/20-21swapper/207:53:122
183669932,0cyclictest19883-21awk08:13:102
183669932,0cyclictest16161-21awk07:48:092
183629932,0cyclictest4986-21awk12:48:091
183629932,0cyclictest3524-21snmpd09:18:161
183629932,0cyclictest3524-21snmpd08:33:151
183629932,0cyclictest2065-21awk09:08:111
183619933,0cyclictest3571-21lldpd09:46:150
183619933,0cyclictest0-21swapper/012:48:230
183619932,0cyclictest997-21awk10:23:100
183619932,0cyclictest5050-21sensors10:58:160
183619932,0cyclictest27930-21tune2fs12:43:080
183619932,0cyclictest26831-21awk07:33:100
183619932,0cyclictest21792-21kthreadcore07:28:120
183619930,0cyclictest9055-21munin-node12:33:070
183619930,0cyclictest23692-21diskstats12:23:070
183619930,0cyclictest14944-21perl10:13:090
169930,0watchdog/127194-21telnet12:43:051
169930,0watchdog/10-21swapper/112:23:011
169930,0watchdog/10-21swapper/110:53:051
183619921,0cyclictest0-21swapper/012:07:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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