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2026-08-12 - 06:06
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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 Wed Aug 12, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3270528075,0sleep10-21swapper/119:29:471
3252524836,0sleep20-21swapper/219:27:402
3266124334,0sleep30-21swapper/319:29:173
3267323827,0sleep00-21swapper/019:29:260
324991111,0cyclictest83050irq/26-0000:00:23:36:332
35170,0ktimersoftd/30-21swapper/300:25:273
8305060,0irq/26-0000:00:22311-21perf20:29:593
4160,0ktimersoftd/00-21swapper/023:27:050
339960,0migration/329724-21sh00:46:123
339960,0migration/324936-21sh23:48:443
339960,0migration/312795-21sh23:03:283
339960,0migration/311675-21munin-node00:00:183
3249966,0cyclictest11883-21diskmemload22:20:332
29815060,0irq/29-eth0-tx-0-21swapper/021:25:220
29805060,0irq/28-eth0-rx-7883-21munin-run20:19:593
29805060,0irq/28-eth0-rx-23743-21grep22:30:173
29805060,0irq/28-eth0-rx-13924-21memory22:05:183
27160,0ktimersoftd/20-21swapper/223:27:052
149960,0migration/05348-21sh23:16:310
149960,0migration/05188-21sh21:43:550
149960,0migration/018404-21kthreadcore19:40:170
8305050,0irq/26-0000:00:0-21swapper/320:59:593
339950,0migration/39648-21timerandwakeup22:40:243
339950,0migration/39213-21kthreadcore23:20:153
339950,0migration/37021-21diskmemload00:54:153
339950,0migration/3469-21latency_hist19:29:593
339950,0migration/34147-21kthreadcore23:35:183
339950,0migration/332031-21kthreadcore21:40:203
339950,0migration/33130-21kthreadcore22:00:183
339950,0migration/33103-21munin-node19:50:193
339950,0migration/330634-21kthreadcore22:15:193
339950,0migration/327558-21kthreadcore20:30:193
339950,0migration/326565-21taskset00:07:563
339950,0migration/324863-21pmu-power20:05:203
339950,0migration/323919-21kthreadcore22:50:193
339950,0migration/323611-21kthreadcore21:35:183
339950,0migration/322645-21fschecks_count23:10:143
339950,0migration/320445-21kthreadcore21:50:193
339950,0migration/317079-21kthreadcore23:25:203
339950,0migration/316578-21kthreadcore00:40:183
339950,0migration/314186-21unixbench-2d00:55:273
339950,0migration/312599-21cpuspeed_turbos00:20:133
339950,0migration/311902-21sh00:19:353
339950,0migration/31171-21sh23:53:573
339950,0migration/311072-21kthreadcore19:35:173
339950,0migration/310822-21rt-features20:40:223
3249955,0cyclictest0-21swapper/223:33:132
3249955,0cyclictest0-21swapper/222:33:282
3249955,0cyclictest0-21swapper/222:00:312
3249955,0cyclictest0-21swapper/200:54:062
3249954,0cyclictest890-21crond22:19:592
3239955,0cyclictest0-21swapper/123:05:221
3239955,0cyclictest0-21swapper/121:53:571
3239955,0cyclictest0-21swapper/119:35:221
3239950,0cyclictest9293-21ssh22:24:131
3239950,0cyclictest0-21swapper/123:30:171
3239950,0cyclictest0-21swapper/123:19:341
3239950,0cyclictest0-21swapper/122:36:411
3239950,0cyclictest0-21swapper/122:13:401
3229953,0cyclictest11127-21kworker/0:100:14:370
3229952,0cyclictest11127-21kworker/0:123:30:190
3229950,0cyclictest0-21swapper/022:20:230
329950,0watchdog/36499-21tune2fs00:35:153
329950,0watchdog/332100-21port_sshpriv20:10:183
329950,0watchdog/323730-21sh22:11:583
329950,0watchdog/323581-21perl21:15:143
329950,0watchdog/31490-21munin-node21:00:103
329950,0watchdog/31219-21kthreadcore22:55:193
29815050,0irq/29-eth0-tx-3749-21users00:30:262
29815050,0irq/29-eth0-tx-28114-21grep00:45:192
29815050,0irq/29-eth0-tx-26655-21kthreadcore23:10:182
29815050,0irq/29-eth0-tx-26001-21munin-node20:10:140
29815050,0irq/29-eth0-tx-22302-21munin-node19:45:210
29815050,0irq/29-eth0-tx-0-21swapper/222:13:172
29815050,0irq/29-eth0-tx-0-21swapper/200:55:122
29815050,0irq/29-eth0-tx-0-21swapper/200:06:032
29815050,0irq/29-eth0-tx-0-21swapper/200:00:022
29815050,0irq/29-eth0-tx-0-21swapper/021:14:210
29815050,0irq/29-eth0-tx-0-21swapper/020:15:280
29815050,0irq/29-eth0-tx-0-21swapper/020:00:170
29815050,0irq/29-eth0-tx-0-21swapper/019:35:200
29805050,0irq/28-eth0-rx-5456-21ssh23:16:493
29805050,0irq/28-eth0-rx-27401-21grep23:30:193
29805050,0irq/28-eth0-rx-14510-21kthreadcore22:25:183
29805050,0irq/28-eth0-rx-12767-21if_err_eth1.222:45:133
29805050,0irq/28-eth0-rx-10241-21kthreadcore23:40:163
29805050,0irq/28-eth0-rx-10241-21kthreadcore23:40:163
29805050,0irq/28-eth0-rx-10133-21kthreadcore20:20:213
29805050,0irq/28-eth0-rx-0-21swapper/323:57:503
29805050,0irq/28-eth0-rx-0-21swapper/323:05:173
29805050,0irq/28-eth0-rx-0-21swapper/321:55:113
29805050,0irq/28-eth0-rx-0-21swapper/321:46:583
27150,0ktimersoftd/20-21swapper/222:40:432
259950,0migration/29357-21kthreadcore23:00:172
259950,0migration/28940-21munin-node19:35:152
259950,0migration/23537-21timerwakeupswit19:50:242
259950,0migration/23324-21sh22:55:552
259950,0migration/225159-21kthreadcore22:50:202
259950,0migration/223002-21kthreadcore21:35:172
259950,0migration/222406-21latency_hist20:29:592
259950,0migration/216194-21sh22:25:232
259950,0migration/214294-21dump-pmu-power21:49:592
259950,0migration/213855-21irqrtprio00:20:182
259950,0migration/213602-21kthreadcore22:45:152
249950,0watchdog/29636-21kthreadcore19:55:182
249950,0watchdog/228462-21cut21:55:182
19150,0ktimersoftd/10-21swapper/123:27:051
19150,0ktimersoftd/10-21swapper/100:04:111
179950,0migration/129205-21munin-node21:55:191
179950,0migration/114376-21ntp_offset21:05:211
169950,0watchdog/17254-21proc_pri21:00:181
169950,0watchdog/122459-21kthreadcore23:45:191
169950,0watchdog/115974-21kthreadcore21:30:181
149950,0migration/09706-21kthreadcore00:55:190
149950,0migration/07728-21idleruntime-cro22:04:590
149950,0migration/05654-21kthreadcore23:35:190
149950,0migration/05550-21kthreadcore23:55:180
149950,0migration/030983-21munin-node00:30:170
149950,0migration/030636-21kthreadcore22:55:180
149950,0migration/030084-21kthreadcore22:35:190
149950,0migration/029980-21aten_r1power_cu21:20:110
149950,0migration/028013-21kthreadcore20:55:200
149950,0migration/027172-21irqrtprio23:50:170
149950,0migration/025319-21sh22:31:020
149950,0migration/024156-21kthreadcore00:05:200
149950,0migration/020362-21kthreadcore23:45:180
149950,0migration/01847-21kthreadcore00:50:170
149950,0migration/017849-21kthreadcore00:40:180
149950,0migration/017674-21kthreadcore21:50:180
149950,0migration/017148-21kthreadcore20:25:240
149950,0migration/017132-21sh22:27:070
149950,0migration/014798-21taskset20:21:390
149950,0migration/014380-21switchtime22:05:240
149950,0migration/013035-21proc_pri23:20:190
149950,0migration/011635-21munin-node00:00:180
339940,0migration/311143-21taskset19:57:273
339940,0migration/31053-21latency_hist22:20:003
3249943,0cyclictest23576-21awk20:30:162
3249943,0cyclictest19885-21awk20:05:142
3249943,0cyclictest15353-21sadc21:09:592
3249941,0cyclictest0-21swapper/223:20:102
3249940,0cyclictest0-21swapper/223:55:192
3239944,0cyclictest0-21swapper/122:15:331
3239943,0cyclictest7117-21awk21:45:171
3239943,0cyclictest5015-21irqcore00:15:191
3239943,0cyclictest4823-21cut19:55:131
3239943,0cyclictest3571-21lldpd21:18:511
3239943,0cyclictest3524-21snmpd00:50:001
3239943,0cyclictest3524-21snmpd00:07:301
3239943,0cyclictest3250-21irqbalance23:02:261
3239943,0cyclictest3250-21irqbalance22:30:161
3239943,0cyclictest3250-21irqbalance22:25:261
3239943,0cyclictest3250-21irqbalance22:05:161
3239943,0cyclictest3250-21irqbalance00:40:561
3239943,0cyclictest30548-21awk21:40:171
3239943,0cyclictest28692-21awk00:10:161
3239943,0cyclictest27409-21awk20:55:181
3239943,0cyclictest22292-21sadc20:29:591
3239943,0cyclictest21840-21awk21:35:151
3239943,0cyclictest16763-21awk21:10:161
3239940,0cyclictest0-21swapper/100:37:081
3229944,0cyclictest5265-21kworker/0:219:56:280
3229944,0cyclictest12579-21kworker/0:021:15:140
3229943,0cyclictest9400-21awk21:05:160
3229943,0cyclictest6204-21awk23:00:150
3229943,0cyclictest3571-21lldpd21:32:520
3229943,0cyclictest3524-21snmpd23:10:450
3229943,0cyclictest3524-21snmpd23:07:300
3229943,0cyclictest3524-21snmpd20:34:130
3229943,0cyclictest22016-21awk00:25:180
3229943,0cyclictest21309-21awk22:50:170
3229943,0cyclictest20141-21awk20:50:160
3229943,0cyclictest13437-21awk00:20:170
3229942,0cyclictest11127-21kworker/0:123:40:170
3229942,0cyclictest11127-21kworker/0:123:40:170
3229942,0cyclictest11127-21kworker/0:122:18:150
3229942,0cyclictest11127-21kworker/0:100:45:170
3229942,0cyclictest11127-21kworker/0:100:15:070
329940,0watchdog/36265-21ps21:25:183
329940,0watchdog/331861-21cut20:35:183
329940,0watchdog/321661-21vmstat19:40:263
329940,0watchdog/320630-21kthreadcore20:50:183
329940,0watchdog/319071-21kthreadcore21:10:183
329940,0watchdog/312731-21cut20:45:143
329940,0watchdog/30-21swapper/322:35:143
329940,0watchdog/30-21swapper/321:20:143
329940,0watchdog/30-21swapper/321:05:183
329940,0watchdog/30-21swapper/300:30:113
29815040,0irq/29-eth0-tx-3885-21ssh00:15:142
29815040,0irq/29-eth0-tx-25658-21munin-node23:50:202
29815040,0irq/29-eth0-tx-13601-21munin-node23:05:122
29815040,0irq/29-eth0-tx-0-21swapper/223:40:112
29815040,0irq/29-eth0-tx-0-21swapper/223:40:112
29815040,0irq/29-eth0-tx-0-21swapper/222:05:102
29815040,0irq/29-eth0-tx-0-21swapper/221:50:042
29815040,0irq/29-eth0-tx-0-21swapper/221:40:192
29815040,0irq/29-eth0-tx-0-21swapper/221:32:042
29815040,0irq/29-eth0-tx-0-21swapper/200:25:152
29815040,0irq/29-eth0-tx-0-21swapper/200:10:032
29815040,0irq/29-eth0-tx-0-21swapper/020:35:170
29805040,0irq/28-eth0-rx-0-21swapper/321:30:113
29805040,0irq/28-eth0-rx-0-21swapper/300:10:183
259940,0migration/26131-21kthreadcore21:00:152
259940,0migration/229940-21latency_hist21:19:592
259940,0migration/226474-21kthreadcore21:15:182
259940,0migration/226444-21runrttasks20:55:142
259940,0migration/220886-21kthreadcore21:10:182
259940,0migration/219972-21gltestperf20:50:142
259940,0migration/218013-21timerwakeupswit20:00:252
259940,0migration/21568-21kthreadcore23:15:172
259940,0migration/212951-21kthreadcore20:20:212
249940,0watchdog/25282-21diskstats21:25:142
249940,0watchdog/230507-21fschecks_time20:35:142
249940,0watchdog/222458-21kthreadcore23:45:192
249940,0watchdog/217778-21kthreadcore00:40:192
249940,0watchdog/212730-21grep20:45:142
249940,0watchdog/20-21swapper/222:35:142
249940,0watchdog/20-21swapper/220:15:142
249940,0watchdog/20-21swapper/200:35:152
179940,0migration/16476-21kthreadcore20:40:181
179940,0migration/14920-21sh00:33:481
179940,0migration/12325-21kthreadcore22:00:171
179940,0migration/122668-21latency_hist00:45:001
179940,0migration/122565-21sh23:10:141
179940,0migration/122484-21kthreadcore22:50:191
179940,0migration/112576-21sh20:00:141
179940,0migration/112074-21kthreadcore23:40:171
179940,0migration/112074-21kthreadcore23:40:171
169940,0watchdog/128425-21chrt00:27:551
169940,0watchdog/126421-21diskstats20:10:101
169940,0watchdog/118601-21kthreadcore19:40:181
169940,0watchdog/11523-21fschecks_time20:15:141
169940,0watchdog/113895-21ssh00:55:231
169940,0watchdog/112729-21tune2fs20:45:141
169940,0watchdog/111692-21munin-node22:45:151
169940,0watchdog/10-21swapper/123:35:191
169940,0watchdog/10-21swapper/121:20:181
169940,0watchdog/10-21swapper/120:50:181
149940,0migration/03756-21kthreadcore21:00:150
149940,0migration/023550-21df21:55:130
149940,0migration/021950-21kthreadcore20:05:160
149940,0migration/011930-21aten_r1power_fr20:45:120
149940,0migration/011697-21aten_r1power_cu22:45:080
149940,0migration/010334-21kthreadcore20:40:190
3249932,0cyclictest3524-21snmpd20:10:132
3249932,0cyclictest3524-21snmpd19:40:132
3239932,0cyclictest9917-21kthreadcore21:25:201
3239932,0cyclictest3524-21snmpd23:50:151
3239932,0cyclictest3524-21snmpd19:45:131
3239932,0cyclictest29714-21tail22:55:141
3239932,0cyclictest23561-21awk20:30:161
3239932,0cyclictest1694-21awk19:30:141
3239931,0cyclictest14289-21cut00:20:181
3239930,0cyclictest3950-21kthreadcore23:55:171
3229933,0cyclictest5265-21kworker/0:219:50:120
3229933,0cyclictest5265-21kworker/0:219:30:000
3229933,0cyclictest11127-21kworker/0:122:40:210
3229933,0cyclictest11127-21kworker/0:122:10:330
3229933,0cyclictest11127-21kworker/0:121:45:190
3229933,0cyclictest11127-21kworker/0:121:35:170
3229930,0cyclictest6319-21perl00:35:150
29805030,0irq/28-eth0-rx-0-21swapper/320:00:253
29805030,0irq/28-eth0-rx-0-21swapper/319:45:243
249930,0watchdog/20-21swapper/220:40:182
179930,0migration/15420-21kthreadcore22:40:171
179930,0migration/121894-21kthreadcore20:05:161
179930,0migration/11050-21kthreadcore19:50:171
169930,0watchdog/10-21swapper/120:35:141
169930,0watchdog/10-21swapper/120:20:141
3249920,0cyclictest472-21latency_hist19:29:592
3249920,0cyclictest22216-21latency_hist19:44:592
3239920,0cyclictest11883-21diskmemload23:20:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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