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2026-07-15 - 08:56
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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
Characteristics of the highest latencies:
System rackeslot2.osadl.org (updated Wed Jul 15, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271624721540,2sleep30-21swapper/321:56:243
279574521040,2sleep30-21swapper/322:51:193
25631282800,3sleep00-21swapper/020:01:230
28413192740,2sleep12841161-21ssh23:21:231
28332482420,2sleep30-21swapper/323:16:203
29005522270,1sleep02900553-21/usr/sbin/munin00:01:220
2497824992615,5cyclictest1034-21runrttasks19:26:161
249782299237,11cyclictest2498161-21apt-get19:11:170
2497822992313,5cyclictest0-21swapper/000:10:020
27431212220,2sleep20-21swapper/222:16:192
249782499221,17cyclictest2654073-21apt-get21:16:171
249782299229,2cyclictest2752081-21kthreadcore22:21:250
2497822992216,2cyclictest191rcu_preempt21:40:000
3240591211,3phc2sys0-21swapper/320:31:163
2497824992118,2cyclictest2668164-21latency_hist21:25:011
2497824992118,2cyclictest2609606-21sh20:40:021
249782299217,4cyclictest2831846-21ssh23:15:010
2497822992114,6cyclictest0-21swapper/022:30:020
2497822992112,4cyclictest2622047-21apt-get20:51:170
2497824992014,2cyclictest69250irq/121-eno100:35:001
2497824992012,3cyclictest0-21swapper/122:40:011
249782299208,7cyclictest0-21swapper/000:31:210
249782299201,8cyclictest2807354-21sort22:56:250
2497822992017,2cyclictest2899048-21/usr/sbin/munin00:00:020
2497822992012,1cyclictest191rcu_preempt23:36:570
2497822992010,4cyclictest2533580-21tr19:36:240
2497824991916,2cyclictest2653427-21/usr/sbin/munin21:15:011
2497824991912,3cyclictest2823118-21unixbench_multi23:06:311
249782299197,3cyclictest16-21ksoftirqd/022:36:220
2497822991916,2cyclictest2817039-21base6423:05:010
2497822991913,2cyclictest191rcu_preempt22:11:360
2497822991911,5cyclictest0-21swapper/021:10:010
2497822991911,1cyclictest191rcu_preempt00:10:300
2497822991911,1cyclictest191rcu_preempt00:10:300
2497822991910,5cyclictest0-21swapper/022:01:250
2497822991910,4cyclictest2507783-21kthreadcore19:16:230
2497822991910,2cyclictest16-21ksoftirqd/019:41:250
249782299190,7cyclictest2728541-21rm22:06:200
2497828991815,1cyclictest0-21swapper/223:00:002
2497824991815,2cyclictest2897685-21head23:56:301
2497824991815,2cyclictest2794640-21systemd-run22:50:021
2497824991815,2cyclictest2749517-21latency_hist22:20:011
2497824991815,2cyclictest2727348-21latency_hist22:05:021
2497824991815,2cyclictest2703691-21xargs21:46:301
2497824991814,2cyclictest0-21swapper/119:20:011
249782299189,5cyclictest2716190-21kthreadcore21:56:240
249782299189,5cyclictest0-21swapper/023:20:350
249782299189,4cyclictest2559950-21ptp4l-jitter19:56:280
249782299189,3cyclictest2664324-21kthreadcore21:21:240
249782299188,5cyclictest16-21ksoftirqd/021:41:170
249782299186,7cyclictest16-21ksoftirqd/021:05:010
249782299186,2cyclictest0-21swapper/021:31:060
249782299185,8cyclictest2847406-21apt-get23:26:170
249782299184,7cyclictest2568875-21kthreadcore20:06:220
249782299184,6cyclictest2831954-21kworker/u16:1+rpciod23:19:050
249782299182,4cyclictest2616225-21cpuspeed_turbos20:46:170
249782299181,6cyclictest16-21ksoftirqd/023:31:230
2497822991815,2cyclictest759-1atopacctd22:45:010
2497822991815,2cyclictest2884280-21latency_hist23:50:030
2497822991815,2cyclictest0-21swapper/021:55:010
2497822991813,2cyclictest191rcu_preempt23:51:270
2497822991811,2cyclictest2797309-21kthreadcore22:51:240
2497822991811,1cyclictest191rcu_preempt00:16:530
249782299180,8cyclictest2522619-21kthreadcore19:26:240
249782299180,7cyclictest2747459-21tr22:16:260
249782299180,7cyclictest2524507-21kworker/u16:2+xprtiod21:50:020
249782299180,4cyclictest2932867-21tr00:21:240
3240591179,2phc2sys0-21swapper/320:15:023
3240591170,2phc2sys0-21swapper/323:48:543
3240591170,2phc2sys0-21swapper/323:32:393
2497828991715,1cyclictest0-21swapper/223:46:142
2497828991714,1cyclictest0-21swapper/223:56:282
2497828991714,1cyclictest0-21swapper/219:41:162
2497828991714,1cyclictest0-21swapper/200:16:182
2497824991714,2cyclictest664-21dbus-daemon19:50:021
2497824991714,2cyclictest2936036-21cron00:25:001
2497824991714,2cyclictest2797835-21kthreadcore22:51:241
2497824991714,2cyclictest2785871-21head22:41:301
2497824991714,2cyclictest2572894-21grep20:10:011
2497824991714,2cyclictest2497813-21cyclictest23:30:021
2497824991714,2cyclictest0-21swapper/120:20:001
2497824991713,2cyclictest2869209-21latency_hist23:40:031
2497824991711,2cyclictest69250irq/121-eno123:16:161
2497824991710,3cyclictest2816606-21runrttasks23:04:441
249782299179,4cyclictest2596210-21phc2sys20:26:270
249782299177,6cyclictest0-21swapper/000:30:010
249782299177,5cyclictest0-21swapper/023:41:130
2497822991713,1cyclictest191rcu_preempt21:15:210
2497822991712,1cyclictest191rcu_preempt20:31:430
249782299171,11cyclictest2550328-21kthreadcore19:51:230
2497822991711,1cyclictest191rcu_preempt19:23:210
2497822991710,1cyclictest191rcu_preempt23:05:570
2497822991710,1cyclictest191rcu_preempt00:36:160
249782299170,6cyclictest2648921-21tr21:11:230
249782299170,11cyclictest2791431-21cut22:46:250
3240591160,3phc2sys0-21swapper/321:26:273
3240591160,3phc2sys0-21swapper/321:26:273
3240591160,2phc2sys0-21swapper/323:00:493
2497828991614,1cyclictest0-21swapper/223:40:022
2497828991614,1cyclictest0-21swapper/221:36:262
2497828991613,1cyclictest0-21swapper/222:51:232
2497824991613,2cyclictest2958449-21munin-plugin-st00:40:021
2497824991613,2cyclictest2904940-21sh00:01:311
2497824991613,2cyclictest2766324-21grep22:31:191
2497824991613,2cyclictest2757275-21packagekitd22:25:021
2497824991613,2cyclictest2677632-21kthreadcore21:31:231
2497824991613,2cyclictest2597233-21cut20:30:021
2497824991613,2cyclictest2497813-21cyclictest20:21:221
2497824991612,3cyclictest2825684-21sh23:11:201
2497824991612,2cyclictest268-21systemd-journal19:10:021
2497824991612,2cyclictest2530565-21latency_hist19:35:021
249782299169,2cyclictest2584506-21timerwakeupswit20:16:300
249782299169,1cyclictest191rcu_preempt20:41:220
249782299169,1cyclictest191rcu_preempt20:23:350
249782299169,1cyclictest191rcu_preempt19:30:450
249782299167,4cyclictest2629270-21irqrtprio20:56:230
249782299162,7cyclictest16-21ksoftirqd/020:11:240
2497822991611,1cyclictest191rcu_preempt22:31:230
2497822991610,2cyclictest191rcu_preempt21:26:150
2497822991610,2cyclictest191rcu_preempt21:26:150
2497822991610,1cyclictest191rcu_preempt19:49:180
3240591150,2phc2sys0-21swapper/319:11:183
3240591150,1phc2sys0-21swapper/322:04:353
2497828991513,1cyclictest0-21swapper/223:10:002
2497828991513,1cyclictest0-21swapper/222:12:002
2497828991513,1cyclictest0-21swapper/220:15:022
2497828991513,1cyclictest0-21swapper/219:15:042
2497828991513,1cyclictest0-21swapper/200:30:012
2497828991512,1cyclictest0-21swapper/223:51:272
2497828991512,1cyclictest0-21swapper/222:35:282
2497828991512,1cyclictest0-21swapper/222:31:162
2497828991512,1cyclictest0-21swapper/222:25:012
2497828991512,1cyclictest0-21swapper/222:05:012
2497828991512,1cyclictest0-21swapper/221:20:482
2497828991512,1cyclictest0-21swapper/200:35:002
2497828991512,1cyclictest0-21swapper/200:11:222
2497828991512,1cyclictest0-21swapper/200:11:222
249782499153,6cyclictest268-21systemd-journal22:10:011
249782499151,9cyclictest664-21dbus-daemon20:15:001
2497824991512,2cyclictest759-1atopacctd20:50:011
2497824991512,2cyclictest2872488-21kthreadcore23:41:221
2497824991512,2cyclictest2855532-21gltestperf23:31:201
2497824991512,2cyclictest2537831-21irqcore19:41:211
2497824991512,2cyclictest2499780-21kthreadcore19:11:231
2497824991512,2cyclictest2497813-21cyclictest20:35:011
2497824991512,2cyclictest0-21swapper/121:30:021
2497824991512,2cyclictest0-21swapper/121:30:021
2497824991511,3cyclictest2831954-21kworker/u16:1+nfsiod23:46:381
2497824991511,3cyclictest2693905-21kthreadcore21:41:251
2497824991511,3cyclictest2634436-21cpuspeed_turbos21:01:191
2497824991511,3cyclictest2497813-21cyclictest20:51:251
249782299156,5cyclictest2491816-21kworker/0:1-events19:10:020
249782299150,8cyclictest2605946-21kthreadcore20:36:240
3240591140,2phc2sys0-21swapper/321:42:553
3240591140,2phc2sys0-21swapper/320:08:413
3240591140,1phc2sys0-21swapper/321:48:083
3240591140,1phc2sys0-21swapper/321:21:383
3240591140,1phc2sys0-21swapper/321:14:523
3240591140,1phc2sys0-21swapper/300:00:583
2497828991412,1cyclictest0-21swapper/223:01:172
2497828991412,1cyclictest0-21swapper/221:59:342
2497828991412,1cyclictest0-21swapper/221:45:012
2497828991412,1cyclictest0-21swapper/221:31:282
2497828991412,1cyclictest0-21swapper/220:06:162
2497828991412,1cyclictest0-21swapper/219:25:012
2497828991412,1cyclictest0-21swapper/219:15:022
2497828991412,1cyclictest0-21swapper/200:01:252
2497828991411,1cyclictest0-21swapper/223:31:312
2497828991411,1cyclictest0-21swapper/223:26:202
2497828991411,1cyclictest0-21swapper/223:11:242
2497828991411,1cyclictest0-21swapper/222:46:182
2497828991411,1cyclictest0-21swapper/222:26:222
2497828991411,1cyclictest0-21swapper/221:51:242
2497828991411,1cyclictest0-21swapper/221:46:292
2497828991411,1cyclictest0-21swapper/221:26:172
2497828991411,1cyclictest0-21swapper/221:26:172
2497828991411,1cyclictest0-21swapper/220:41:282
2497828991411,1cyclictest0-21swapper/219:55:232
2497828991411,1cyclictest0-21swapper/219:46:262
2497828991411,1cyclictest0-21swapper/200:35:082
2497828991411,1cyclictest0-21swapper/200:07:282
249782499147,3cyclictest0-21swapper/100:25:431
2497824991411,2cyclictest2914891-21cstates00:11:181
2497824991411,2cyclictest2914891-21cstates00:11:181
2497824991411,2cyclictest2908455-21kthreadcore00:06:231
2497824991411,2cyclictest2757941-21aten_repower_cu22:26:161
2497824991411,2cyclictest2716939-21kthreadcore21:56:241
2497824991411,2cyclictest2707234-21kthreadcore21:51:231
2497824991411,2cyclictest2688787-21mailstats21:36:301
2497824991411,2cyclictest2615588-21sh20:45:011
2497824991411,2cyclictest2561719-21fschecks_time20:01:191
2497824991411,2cyclictest1306-21mta-sts-daemon22:55:201
2497824991411,2cyclictest0-21swapper/121:10:021
2497824991410,3cyclictest2923283-21kthreadcore00:16:251
3240591137,2phc2sys0-21swapper/322:16:533
3240591130,3phc2sys0-21swapper/300:38:373
3240591130,2phc2sys0-21swapper/322:24:433
3240591130,2phc2sys0-21swapper/320:56:213
2497828991311,1cyclictest0-21swapper/223:41:212
2497828991311,1cyclictest0-21swapper/223:21:222
2497828991311,1cyclictest0-21swapper/221:11:232
2497828991311,1cyclictest0-21swapper/220:40:012
2497828991311,1cyclictest0-21swapper/220:25:002
2497828991311,1cyclictest0-21swapper/220:20:022
2497828991311,1cyclictest0-21swapper/220:01:272
2497828991310,1cyclictest0-21swapper/222:41:242
2497828991310,1cyclictest0-21swapper/222:06:182
2497828991310,1cyclictest0-21swapper/220:56:222
249782899130,1cyclictest0-21swapper/220:46:152
249782499131,7cyclictest0-21swapper/119:55:011
2497824991310,2cyclictest2886366-21kthreadcore23:51:231
2497824991310,2cyclictest2736942-21kthreadcore22:11:241
2497824991310,2cyclictest2556326-21kthreadcore19:56:241
2497824991310,2cyclictest2532016-21irqrtprio19:36:221
3240591123,2phc2sys0-21swapper/321:35:183
3240591121,2phc2sys0-21swapper/319:15:043
3240591121,2phc2sys0-21swapper/319:06:183
3240591120,2phc2sys0-21swapper/322:45:563
3240591120,2phc2sys0-21swapper/322:33:563
3240591120,1phc2sys0-21swapper/319:44:013
249782899129,1cyclictest0-21swapper/221:06:212
249782899129,1cyclictest0-21swapper/219:35:452
249782899129,1cyclictest0-21swapper/219:31:172
249782899129,1cyclictest0-21swapper/200:21:182
2497828991210,1cyclictest0-21swapper/223:18:012
2497828991210,1cyclictest0-21swapper/221:15:412
2497828991210,1cyclictest0-21swapper/220:51:172
2497828991210,1cyclictest0-21swapper/219:55:022
2497828991210,1cyclictest0-21swapper/219:28:302
249782499129,2cyclictest2628107-21head20:56:181
249782499129,2cyclictest2513135-21sh19:21:191
3240591111,2phc2sys0-21swapper/322:41:223
3240591110,2phc2sys0-21swapper/322:39:303
3240591110,1phc2sys0-21swapper/323:57:333
3240591110,1phc2sys0-21swapper/323:36:173
3240591110,1phc2sys0-21swapper/323:28:193
3240591110,1phc2sys0-21swapper/322:27:123
3240591110,1phc2sys0-21swapper/321:18:233
3240591110,1phc2sys0-21swapper/300:30:253
3240591110,1phc2sys0-21swapper/300:15:263
249782899119,1cyclictest0-21swapper/221:00:452
249782899119,1cyclictest0-21swapper/220:31:032
249782899119,1cyclictest0-21swapper/220:25:562
3240591102,3phc2sys0-21swapper/320:36:173
3240591101,2phc2sys0-21swapper/320:29:333
3240591101,2phc2sys0-21swapper/320:01:243
3240591101,2phc2sys0-21swapper/300:07:353
3240591100,2phc2sys0-21swapper/323:10:083
3240591100,2phc2sys0-21swapper/322:08:563
3240591100,2phc2sys0-21swapper/321:06:153
3240591100,2phc2sys0-21swapper/300:29:003
3240591100,1phc2sys0-21swapper/320:23:283
3240591100,1phc2sys0-21swapper/319:21:493
324059193,2phc2sys0-21swapper/322:58:373
324059192,1phc2sys0-21swapper/323:52:363
324059191,2phc2sys0-21swapper/323:41:223
324059191,2phc2sys0-21swapper/323:21:463
324059191,2phc2sys0-21swapper/323:05:353
324059191,2phc2sys0-21swapper/322:14:453
324059191,2phc2sys0-21swapper/321:51:253
324059191,2phc2sys0-21swapper/319:46:253
324059191,1phc2sys0-21swapper/321:31:243
324059190,3phc2sys0-21swapper/319:40:023
324059190,2phc2sys0-21swapper/319:55:233
324059190,2phc2sys0-21swapper/319:31:223
324059190,2phc2sys0-21swapper/300:21:273
324059190,1phc2sys0-21swapper/320:51:333
324059190,1phc2sys0-21swapper/300:12:203
324059190,1phc2sys0-21swapper/300:12:203
324059181,2phc2sys0-21swapper/321:01:173
324059181,2phc2sys0-21swapper/320:46:523
324059180,2phc2sys0-21swapper/320:41:193
324059180,2phc2sys0-21swapper/319:51:223
324059180,1phc2sys0-21swapper/320:19:553
324059180,1phc2sys0-21swapper/319:26:263
24978289986,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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