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2026-05-18 - 12:35
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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 May 18, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2514624839,0sleep20-21swapper/219:22:282
2510923826,0sleep00-21swapper/019:21:580
2519323627,0sleep10-21swapper/119:22:551
2493323430,0sleep30-21swapper/319:19:573
252649976,0cyclictest0-21swapper/123:28:161
339960,0migration/3623-21kthreadcore22:33:163
339960,0migration/3505-21sh00:24:313
339960,0migration/326595-21sh22:11:543
339960,0migration/311892-21sh00:50:333
329960,0watchdog/330665-21irqcore20:33:163
29815060,0irq/29-eth0-tx-0-21swapper/020:23:340
29805060,0irq/28-eth0-rx-8267-21nfs4_client00:28:193
29805060,0irq/28-eth0-rx-2424-21perl23:13:133
29805060,0irq/28-eth0-rx-10416-21diskstats22:03:113
252659965,0cyclictest31507-21sh22:52:582
252659960,0cyclictest14929-21ssh21:44:552
252659960,0cyclictest0-21swapper/222:14:342
149960,0migration/0537-21fschecks_time00:08:110
149960,0migration/030460-21gltestperf22:33:120
149960,0migration/015273-21sh21:45:470
4150,0ktimersoftd/00-21swapper/000:43:110
35150,0ktimersoftd/30-21swapper/322:15:333
339950,0migration/39813-21kthreadcore20:38:153
339950,0migration/38950-21munin-node00:13:113
339950,0migration/38705-21runrttasks19:33:143
339950,0migration/37248-21kthreadcore19:53:153
339950,0migration/36636-21munin-node23:53:103
339950,0migration/328233-21kthreadcore20:08:143
339950,0migration/327560-21kthreadcore19:23:143
339950,0migration/32190-21kthreadcore22:53:153
339950,0migration/32177-21kthreadcore19:28:163
339950,0migration/320846-21taskset22:27:583
339950,0migration/320673-21kthreadcore20:03:153
339950,0migration/317425-21taskset00:33:243
339950,0migration/314033-21munin-node21:03:183
339950,0migration/311055-21diskmemload23:34:213
329950,0watchdog/326514-21if_err_eth1.323:08:133
329950,0watchdog/325851-21grep22:48:123
329950,0watchdog/323532-21python00:18:213
329950,0watchdog/321164-21cut21:48:163
329950,0watchdog/30-21swapper/321:24:243
29815050,0irq/29-eth0-tx-8043-21munin-node21:03:130
29815050,0irq/29-eth0-tx-6505-21ssh22:54:162
29815050,0irq/29-eth0-tx-4327-21munin-node20:38:160
29815050,0irq/29-eth0-tx-11562-21munin-node20:43:180
29815050,0irq/29-eth0-tx-0-21swapper/222:39:592
29815050,0irq/29-eth0-tx-0-21swapper/200:10:172
29805050,0irq/28-eth0-rx-9466-21cut22:58:153
29805050,0irq/28-eth0-rx-30374-21ssh21:37:063
29805050,0irq/28-eth0-rx-28130-21sh00:43:113
29805050,0irq/28-eth0-rx-25175-21ssh23:23:193
29805050,0irq/28-eth0-rx-16414-21missed_timers23:18:183
29805050,0irq/28-eth0-rx-14941-21diskstats22:43:123
29805050,0irq/28-eth0-rx-14901-21kthreadcore21:28:193
29805050,0irq/28-eth0-rx-0-21swapper/323:48:113
29805050,0irq/28-eth0-rx-0-21swapper/323:43:283
29805050,0irq/28-eth0-rx-0-21swapper/323:28:343
29805050,0irq/28-eth0-rx-0-21swapper/323:05:543
29805050,0irq/28-eth0-rx-0-21swapper/322:39:163
29805050,0irq/28-eth0-rx-0-21swapper/322:24:093
29805050,0irq/28-eth0-rx-0-21swapper/322:18:153
29805050,0irq/28-eth0-rx-0-21swapper/321:53:153
29805050,0irq/28-eth0-rx-0-21swapper/321:43:183
29805050,0irq/28-eth0-rx-0-21swapper/321:41:133
29805050,0irq/28-eth0-rx-0-21swapper/300:41:223
29805050,0irq/28-eth0-rx-0-21swapper/300:10:593
29805050,0irq/28-eth0-rx-0-21swapper/300:03:163
29805050,0irq/28-eth0-rx-0-21swapper/300:01:163
27150,0ktimersoftd/20-21swapper/221:29:432
27150,0ktimersoftd/20-21swapper/200:33:562
252659955,0cyclictest0-21swapper/223:25:592
252659955,0cyclictest0-21swapper/223:21:242
252659955,0cyclictest0-21swapper/223:14:572
252659955,0cyclictest0-21swapper/221:38:182
252659950,0cyclictest0-21swapper/222:32:512
252659950,0cyclictest0-21swapper/221:56:452
252659950,0cyclictest0-21swapper/221:25:512
252649955,0cyclictest0-21swapper/123:04:001
252649955,0cyclictest0-21swapper/120:20:591
252639955,0cyclictest0-21swapper/023:43:160
252639950,0cyclictest0-21swapper/022:42:340
259950,0migration/226467-21sh22:11:352
259950,0migration/222011-21latency_hist21:32:572
259950,0migration/217677-21sh22:06:102
259950,0migration/215284-21aten_r1power_fr21:08:082
259950,0migration/210242-21kthreadcore23:53:152
249950,0watchdog/2562-21kthreadcore21:18:162
249950,0watchdog/2437-21cut23:28:172
249950,0watchdog/223216-21hddtemp_smartct20:28:122
249950,0watchdog/217742-21sensors_volt20:43:202
179950,0migration/14500-21gltestperf22:18:111
179950,0migration/14438-21sh22:34:491
179950,0migration/13638-21ntp_offset23:48:181
179950,0migration/127763-21idleruntime-cro00:42:571
179950,0migration/126401-21kthreadcore22:48:131
179950,0migration/123911-21taskset21:50:411
169950,0watchdog/19007-21grep21:23:161
149950,0migration/08908-21kthreadcore23:53:150
149950,0migration/08368-21cpu22:58:100
149950,0migration/07230-21kthreadcore00:48:150
149950,0migration/05890-21kthreadcore20:13:150
149950,0migration/04563-21taskset23:49:160
149950,0migration/03644-21kthreadcore20:58:150
149950,0migration/03335-21latency_hist22:17:570
149950,0migration/032534-21unixbench_singl00:23:250
149950,0migration/031284-21sh00:06:180
149950,0migration/030832-21kthreadcore20:08:150
149950,0migration/030185-21fschecks_count21:18:120
149950,0migration/029127-21kthreadcore19:23:140
149950,0migration/028689-21taskset19:45:210
149950,0migration/028239-21sh22:30:130
149950,0migration/02666-21missed_timers19:48:160
149950,0migration/026387-21kthreadcore21:33:170
149950,0migration/024893-21latency_hist21:52:570
149950,0migration/02431-21sh23:29:350
149950,0migration/024187-21kthreadcore20:48:170
149950,0migration/02387-21fschecks_time23:13:130
149950,0migration/022336-21mdstat21:48:170
149950,0migration/021655-21kthreadcore23:23:160
149950,0migration/020909-21kthreadcore20:03:150
149950,0migration/019715-21kthreadcore21:08:140
149950,0migration/018598-21kthreadcore22:43:170
149950,0migration/018374-21kthreadcore23:58:170
149950,0migration/018284-21sh00:35:360
149950,0migration/016656-21kthreadcore19:38:140
149950,0migration/014826-21kthreadcore23:38:150
149950,0migration/01465-21cpuspeed_turbos21:58:100
149950,0migration/013910-21kthreadcore00:13:180
149950,0migration/012679-21kthreadcore23:18:160
149950,0migration/010531-21kthreadcore19:33:150
149950,0migration/010154-21munin-node19:53:190
8305040,0irq/26-0000:00:0-21swapper/200:02:582
339940,0migration/330443-21kthreadcore20:53:163
339940,0migration/323788-21taskset20:28:153
339940,0migration/319982-21diskmemload23:40:163
339940,0migration/318834-21kthreadcore21:08:143
339940,0migration/318288-21taskset20:45:353
329940,0watchdog/36073-21kthreadcore20:58:163
329940,0watchdog/327454-21kthreadcore21:13:163
329940,0watchdog/30-21swapper/321:18:163
329940,0watchdog/30-21swapper/320:48:163
329940,0watchdog/30-21swapper/319:48:123
29815040,0irq/29-eth0-tx-31356-21kthreadcore00:23:172
29815040,0irq/29-eth0-tx-19429-21munin-node00:38:112
29815040,0irq/29-eth0-tx-1182-21ssh21:58:022
29815040,0irq/29-eth0-tx-0-21swapper/223:58:022
29815040,0irq/29-eth0-tx-0-21swapper/223:48:062
29815040,0irq/29-eth0-tx-0-21swapper/223:38:092
29815040,0irq/29-eth0-tx-0-21swapper/222:58:242
29815040,0irq/29-eth0-tx-0-21swapper/222:23:022
29815040,0irq/29-eth0-tx-0-21swapper/200:18:072
29815040,0irq/29-eth0-tx-0-21swapper/021:23:150
29815040,0irq/29-eth0-tx-0-21swapper/019:28:200
29805040,0irq/28-eth0-rx-0-21swapper/321:58:113
29805040,0irq/28-eth0-rx-0-21swapper/320:18:183
29805040,0irq/28-eth0-rx-0-21swapper/319:47:153
252659944,0cyclictest0-21swapper/200:13:542
252659943,0cyclictest5137-21awk19:53:132
252659943,0cyclictest4706-21awk22:18:132
252659943,0cyclictest3571-21lldpd20:12:522
252659943,0cyclictest3571-21lldpd19:43:512
252659943,0cyclictest3571-21lldpd19:38:512
252659943,0cyclictest3571-21lldpd19:23:512
252659943,0cyclictest3250-21irqbalance21:13:142
252659943,0cyclictest3250-21irqbalance21:03:432
252659943,0cyclictest26515-21awk23:08:132
252659943,0cyclictest22364-21awk23:43:132
252659943,0cyclictest1325-21awk19:28:152
252659943,0cyclictest0-21swapper/222:32:582
252649944,0cyclictest0-21swapper/122:47:071
252649944,0cyclictest0-21swapper/121:18:221
252649943,0cyclictest9619-21awk00:13:131
252649943,0cyclictest7399-21awk23:53:131
252649943,0cyclictest7039-21awk22:38:131
252649943,0cyclictest5394-21awk00:48:131
252649943,0cyclictest5227-21awk23:33:141
252649943,0cyclictest3571-21lldpd23:45:551
252649943,0cyclictest3524-21snmpd23:00:371
252649943,0cyclictest3524-21snmpd20:24:041
252649943,0cyclictest32653-21sadc20:12:571
252649943,0cyclictest27061-21awk00:23:141
252649943,0cyclictest26523-21awk19:23:121
252649943,0cyclictest2335-21awk21:58:141
252649943,0cyclictest14474-21awk21:28:171
252639944,0cyclictest0-21swapper/021:28:000
252639944,0cyclictest0-21swapper/020:28:240
252639943,0cyclictest3571-21lldpd21:13:240
252639943,0cyclictest3346-21awk00:28:150
252639943,0cyclictest30523-21awk20:33:150
252639943,0cyclictest26614-21awk23:08:130
252639943,0cyclictest20481-21awk00:38:130
252639943,0cyclictest19792-21awk22:08:130
252639943,0cyclictest17906-21awk23:03:130
252639940,0cyclictest0-21swapper/022:23:580
259940,0migration/25153-21kthreadcore20:13:152
259940,0migration/24060-21aten_r1power_en23:33:102
259940,0migration/228292-21cpuspeed_turbos00:43:122
259940,0migration/228019-21kthreadcore20:53:152
259940,0migration/221966-21kthreadcore20:03:152
259940,0migration/220453-21kthreadcore20:23:152
259940,0migration/218866-21munin-node20:48:102
259940,0migration/217536-21if_eth121:48:142
259940,0migration/211115-21kthreadcore19:33:162
249940,0watchdog/26072-21kthreadcore20:58:162
249940,0watchdog/25425-21ssh00:48:132
249940,0watchdog/24780-21kthreadcore00:28:172
249940,0watchdog/230661-21ps20:33:162
249940,0watchdog/230163-21idleruntime19:48:122
249940,0watchdog/223565-21ssh23:03:372
249940,0watchdog/212026-21perl19:58:122
249940,0watchdog/20-21swapper/222:43:122
179940,0migration/13129-21kthreadcore20:13:141
179940,0migration/129125-21kthreadcore23:08:151
179940,0migration/125253-21munin-node23:23:201
179940,0migration/125242-21kthreadcore22:28:171
179940,0migration/123811-21kernelversion20:28:151
179940,0migration/123717-21kthreadcore22:08:161
179940,0migration/120269-21taskset22:27:001
179940,0migration/119239-21kthreadcore00:18:151
179940,0migration/119192-21fschecks_time20:03:111
179940,0migration/119051-21timerandwakeup23:38:231
179940,0migration/118964-21cpuspeed_turbos20:48:111
179940,0migration/117026-21kthreadcore19:38:141
179940,0migration/114887-21kthreadcore23:18:161
179940,0migration/112485-21gltestperf20:43:111
169940,0watchdog/1557-21df_abs19:28:121
169940,0watchdog/130664-21irqcore20:33:161
169940,0watchdog/13057-21gltestperf00:28:131
169940,0watchdog/127812-21kthreadcore00:03:171
169940,0watchdog/12394-21perl23:13:131
169940,0watchdog/122943-21grep21:33:121
169940,0watchdog/119053-21ssh00:37:451
169940,0watchdog/11647-21ssh22:13:441
169940,0watchdog/114678-21kthreadcore19:58:161
169940,0watchdog/114002-21kthreadcore22:03:161
169940,0watchdog/112133-21cut19:33:161
169940,0watchdog/110270-21python19:53:201
169940,0watchdog/10-21swapper/120:58:161
169940,0watchdog/10-21swapper/119:48:121
169940,0watchdog/10-21swapper/100:43:171
149940,0migration/08655-21kthreadcore23:33:160
329930,0watchdog/30-21swapper/320:23:083
329930,0watchdog/30-21swapper/319:40:003
29815030,0irq/29-eth0-tx-0-21swapper/020:53:100
29805030,0irq/28-eth0-rx-0-21swapper/320:13:103
29805030,0irq/28-eth0-rx-0-21swapper/319:58:103
252659932,0cyclictest5396-21awk20:38:122
252649933,0cyclictest8707-21awk21:43:131
252649933,0cyclictest4253-21diskmemload00:08:471
252649933,0cyclictest16066-21awk23:58:151
252649932,0cyclictest22994-21awk19:43:121
252649932,0cyclictest21381-21sensors21:08:181
252639933,0cyclictest23125-21kworker/0:222:18:150
252639933,0cyclictest18346-21awk00:18:140
252639932,0cyclictest5008-21sendmail_mailqu21:38:180
252639932,0cyclictest3524-21snmpd22:57:530
252639932,0cyclictest3524-21snmpd22:49:210
252639932,0cyclictest3524-21snmpd20:02:180
252639930,0cyclictest0-21swapper/020:20:590
249930,0watchdog/20-21swapper/220:18:002
169930,0watchdog/10-21swapper/121:53:041
169930,0watchdog/10-21swapper/121:38:001
169930,0watchdog/10-21swapper/121:13:161
169930,0watchdog/10-21swapper/121:07:201
169930,0watchdog/10-21swapper/120:38:081
149930,0migration/016717-21sh22:03:300
252649921,0cyclictest25916-21cat20:52:571
169920,0watchdog/10-21swapper/122:53:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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