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2026-06-17 - 04:41
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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 376 highest latencies:
System rackeslot2.osadl.org (updated Wed Jun 17, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286595921650,2sleep30-21swapper/322:05:223
272093721120,2sleep30-21swapper/320:15:253
296851421040,1sleep10-21swapper/123:15:141
28349672990,2sleep20-21swapper/221:45:132
30790802310,2sleep30-21swapper/300:30:153
3153791261,9phc2sys0-21swapper/322:35:143
29828492260,2sleep30-21swapper/323:25:023
2634179992414,6cyclictest0-21swapper/023:00:010
2634180992315,3cyclictest0-21swapper/122:10:001
2634181992219,1cyclictest0-21swapper/223:45:012
2634179992212,5cyclictest0-21swapper/000:05:150
2634181992118,1cyclictest0-21swapper/200:40:012
2634180992118,2cyclictest2842055-21/usr/sbin/munin21:50:011
2634180992114,2cyclictest67250irq/126-eno123:40:001
2634179992118,2cyclictest2640343-21hddtemp_smartct19:15:010
492398200,4rtkit-daemon1237-21mta-sts-daemon21:06:260
2634181992017,1cyclictest0-21swapper/223:30:002
2634181992017,1cyclictest0-21swapper/223:10:012
2634181992017,1cyclictest0-21swapper/219:30:582
2634181992017,1cyclictest0-21swapper/200:20:172
2634180992017,2cyclictest2782668-21diskmemload22:20:121
2634179992017,2cyclictest3093025-21dump-pmu-power00:40:010
2634179992017,2cyclictest2864452-21grep22:05:020
2634179992016,2cyclictest2916306-21sh22:40:030
2634179992011,5cyclictest765-1atopacctd23:45:200
2634179992011,5cyclictest0-21swapper/022:30:020
2634181991917,1cyclictest0-21swapper/221:30:022
2634181991916,1cyclictest0-21swapper/223:45:192
2634180991916,2cyclictest3041534-21grep00:05:021
2634180991916,2cyclictest2805062-21apt-key21:25:011
263417999198,6cyclictest0-21swapper/022:10:010
263417999196,7cyclictest1247-21mta-sts-daemon21:42:180
2634179991916,2cyclictest3001638-21kthreadcore23:35:200
2634179991916,2cyclictest2810591-21python321:25:270
2634179991916,2cyclictest1159803-1atop22:20:020
2634179991916,2cyclictest0-21swapper/023:20:010
2634179991910,7cyclictest0-21swapper/023:05:140
492398180,7rtkit-daemon1237-21mta-sts-daemon20:18:240
3153791180,2phc2sys0-21swapper/322:30:453
263418199181,8cyclictest0-21swapper/219:15:132
2634181991816,1cyclictest0-21swapper/220:50:012
2634181991815,1cyclictest0-21swapper/219:45:022
2634180991816,1cyclictest3078629-21latency_hist00:30:031
2634180991815,2cyclictest765-1atopacctd21:55:031
2634180991815,2cyclictest3057819-21irqrtprio00:15:191
2634180991815,2cyclictest3057819-21irqrtprio00:15:191
2634180991815,2cyclictest3019953-21cut23:50:141
2634180991815,2cyclictest2923456-21latency_hist22:45:011
263417999188,9cyclictest0-21swapper/021:10:120
2634179991816,1cyclictest2938427-21apt-key22:55:020
2634179991815,2cyclictest3071169-21cut00:25:020
2634179991815,2cyclictest3041483-21sh00:05:010
2634179991815,2cyclictest2997289-21/usr/sbin/munin23:35:000
2634179991815,2cyclictest2951281-21mailstats23:00:270
2634179991815,2cyclictest2776802-21systemd-run21:05:020
263417999180,14cyclictest2685426-21/usr/sbin/munin19:50:140
3153791170,2phc2sys0-21swapper/323:03:033
26802362170,2sleep20-21swapper/219:45:192
263418199171,8cyclictest0-21swapper/200:30:122
2634181991715,1cyclictest0-21swapper/222:35:032
2634181991715,1cyclictest0-21swapper/222:05:022
2634181991714,1cyclictest0-21swapper/223:55:012
2634181991714,1cyclictest0-21swapper/222:45:012
2634181991714,1cyclictest0-21swapper/221:55:202
2634181991714,1cyclictest0-21swapper/221:35:152
2634181991714,1cyclictest0-21swapper/221:10:142
2634181991714,1cyclictest0-21swapper/221:10:022
2634181991714,1cyclictest0-21swapper/220:05:002
2634181991714,1cyclictest0-21swapper/200:00:022
2634181991710,5cyclictest2953057-21taskset23:04:492
263418199170,14cyclictest0-21swapper/200:10:122
263418099174,4cyclictest1242-21mta-sts-daemon21:43:161
2634180991714,2cyclictest660-21dbus-daemon22:25:261
2634180991714,2cyclictest4922-21rtkit-daemon21:04:451
2634180991714,2cyclictest3019457-21sh23:50:011
2634180991714,2cyclictest2818258-21grep21:30:281
2634180991714,2cyclictest2790756-21grep21:15:161
2634180991714,2cyclictest2696936-21sshd19:56:031
2634180991714,2cyclictest2634177-21cyclictest19:35:431
2634180991714,2cyclictest1-21systemd19:25:021
2634180991713,3cyclictest2641038-21kthreadcore19:15:021
2634180991713,2cyclictest2721609-21munin-run20:20:001
2634180991712,2cyclictest1237-21mta-sts-daemon00:37:071
2634180991710,3cyclictest2959349-21runrttasks23:06:381
2634180991710,3cyclictest2758522-21tail20:50:151
263417999179,7cyclictest0-21swapper/021:30:230
263417999178,5cyclictest2980406-21missed_timers23:20:220
263417999177,5cyclictest0-21swapper/000:30:150
263417999173,8cyclictest0-21swapper/000:15:130
263417999173,8cyclictest0-21swapper/000:15:130
2634179991714,2cyclictest3019991-21tr23:50:140
2634179991714,2cyclictest2988336-21grep23:25:270
2634179991714,2cyclictest2923828-21aten_repower_en22:45:140
2634179991714,2cyclictest2797591-21systemd21:20:020
2634179991714,2cyclictest1020-21runrttasks21:50:040
2634179991712,4cyclictest675-21mta-sts-daemon22:13:350
2634179991712,4cyclictest1242-21mta-sts-daemon20:50:140
2634179991711,2cyclictest17750irq/132-ahci[0000:00:17.0]20:35:000
2634179991710,5cyclictest0-21swapper/023:15:000
3153791161,6phc2sys0-21swapper/320:50:263
3153791161,2phc2sys0-21swapper/321:55:223
3153791160,4phc2sys0-21swapper/320:10:013
3153791160,2phc2sys0-21swapper/323:13:373
3153791160,2phc2sys0-21swapper/321:50:253
2634181991614,1cyclictest0-21swapper/200:00:202
2634181991613,1cyclictest0-21swapper/223:00:012
2634181991613,1cyclictest0-21swapper/222:15:012
2634181991613,1cyclictest0-21swapper/221:55:002
2634181991613,1cyclictest0-21swapper/221:18:482
2634181991613,1cyclictest0-21swapper/220:29:552
2634181991613,1cyclictest0-21swapper/220:18:242
2634181991613,1cyclictest0-21swapper/200:25:122
2634181991613,1cyclictest0-21swapper/200:15:322
2634181991613,1cyclictest0-21swapper/200:15:322
2634181991612,2cyclictest0-21swapper/222:28:552
263418099163,8cyclictest2770513-21awk21:00:011
2634180991614,1cyclictest1020-21runrttasks23:26:581
2634180991613,2cyclictest738-21gdbus22:00:011
2634180991613,2cyclictest693-21systemd-logind23:15:011
2634180991613,2cyclictest3034063-21sh00:00:011
2634180991613,2cyclictest3010066-21mailstats23:40:241
2634180991613,2cyclictest2820827-21grep21:35:171
2634180991613,2cyclictest2777666-21gltestperf21:05:171
2634180991613,2cyclictest2697712-21head20:00:151
2634180991613,2cyclictest2634177-21cyclictest22:15:181
2634180991613,2cyclictest1242-21mta-sts-daemon23:02:321
2634180991613,2cyclictest0-21swapper/122:15:011
2634180991612,3cyclictest2855522-21kworker/u16:2+nfsiod22:37:351
2634180991612,3cyclictest2642424-21gltestperf19:15:031
263417999169,6cyclictest1237-21mta-sts-daemon00:14:370
263417999166,5cyclictest0-21swapper/022:40:170
263417999162,8cyclictest0-21swapper/021:35:130
2634179991613,2cyclictest698-21in:imuxsock21:50:010
2634179991613,2cyclictest2906562-21mailstats22:30:250
2634179991613,2cyclictest2751963-21dump-pmu-power20:45:010
2634179991613,2cyclictest2696156-21latency19:55:210
2634179991613,2cyclictest1242-21mta-sts-daemon19:29:370
2634179991612,3cyclictest2711063-21kthreadcore20:10:200
2634179991612,3cyclictest2700405-21kthreadcore20:00:220
2634179991612,2cyclictest2746086-21latency_hist20:40:020
3153791150,3phc2sys0-21swapper/321:46:203
3153791150,2phc2sys0-21swapper/322:52:283
3153791150,2phc2sys0-21swapper/300:22:263
263418199158,3cyclictest0-21swapper/222:45:132
2634181991513,1cyclictest0-21swapper/223:25:002
2634181991513,1cyclictest0-21swapper/221:40:122
2634181991513,1cyclictest0-21swapper/220:15:012
2634181991513,1cyclictest0-21swapper/220:10:012
2634181991512,1cyclictest0-21swapper/222:10:022
2634181991512,1cyclictest0-21swapper/221:22:392
2634181991512,1cyclictest0-21swapper/220:25:012
2634181991512,1cyclictest0-21swapper/219:55:242
2634181991512,1cyclictest0-21swapper/219:15:012
2634181991511,2cyclictest0-21swapper/223:20:012
2634180991513,1cyclictest1247-21mta-sts-daemon22:31:131
2634180991513,1cyclictest1237-21mta-sts-daemon22:53:221
2634180991513,1cyclictest1237-21mta-sts-daemon20:09:271
2634180991512,2cyclictest2842009-21kworker/u16:0-events_unbound22:00:131
2634180991512,2cyclictest2748711-21kthreadcore20:40:221
2634180991512,2cyclictest2715092-21unixbench_singl20:10:271
2634180991512,2cyclictest2660866-21wc19:30:021
2634180991512,2cyclictest1237-21mta-sts-daemon19:34:571
2634180991512,2cyclictest0-21swapper/119:10:021
2634180991511,3cyclictest3046832-21mailstats00:05:281
2634180991511,3cyclictest2926621-21kthreadcore22:45:211
2634180991511,3cyclictest2743240-21kthreadcore20:35:211
2634180991510,4cyclictest3079520-21hddtemp_smartct00:30:181
2634180991510,4cyclictest1247-21mta-sts-daemon00:13:331
263417999158,2cyclictest17750irq/132-ahci[0000:00:17.0]19:50:010
263417999152,7cyclictest1159803-1atop19:10:010
263417999151,8cyclictest0-21swapper/000:25:520
263417999151,5cyclictest491rcuog/221:20:140
2634179991512,2cyclictest2855344-21unixbench_multi21:55:260
2634179991512,2cyclictest2728675-21gltestperf20:25:160
2634179991512,2cyclictest2727825-21sh20:25:010
2634179991512,2cyclictest2709007-21head20:05:280
2634179991512,2cyclictest2667062-21sh19:35:030
2634179991510,4cyclictest3027642-21cut23:55:160
2634179991510,4cyclictest2640297-21munin-node19:19:510
3153791140,5phc2sys0-21swapper/322:23:223
3153791140,4phc2sys0-21swapper/320:35:243
3153791140,3phc2sys0-21swapper/300:36:363
3153791140,2phc2sys0-21swapper/323:43:193
3153791140,2phc2sys0-21swapper/322:04:203
3153791140,2phc2sys0-21swapper/321:41:023
263418199142,7cyclictest0-21swapper/223:30:122
263418199141,7cyclictest0-21swapper/219:50:122
2634181991412,1cyclictest0-21swapper/222:40:012
2634181991412,1cyclictest0-21swapper/222:20:182
2634181991412,1cyclictest0-21swapper/221:35:032
2634181991411,1cyclictest0-21swapper/223:10:202
2634181991411,1cyclictest0-21swapper/222:19:272
2634181991411,1cyclictest0-21swapper/220:55:172
2634181991411,1cyclictest0-21swapper/220:50:202
2634181991411,1cyclictest0-21swapper/220:40:222
2634181991411,1cyclictest0-21swapper/220:40:012
2634181991411,1cyclictest0-21swapper/220:30:172
2634181991410,2cyclictest0-21swapper/219:20:122
263418099147,5cyclictest274-21systemd-journal20:24:441
263418099146,3cyclictest0-21swapper/121:27:451
263418099145,4cyclictest0-21swapper/123:30:121
2634180991411,2cyclictest3064033-21sh00:20:141
2634180991411,2cyclictest2975611-21apt-get23:20:121
2634180991411,2cyclictest2945193-21sshd22:58:171
2634180991411,2cyclictest2678210-21sendmail_mailqu19:40:241
2634180991410,3cyclictest2784397-21kthreadcore21:10:201
2634180991410,3cyclictest2737571-21kthreadcore20:30:211
2634180991410,3cyclictest2729279-21kernelversion20:25:191
2634180991410,3cyclictest2680441-21irqcore19:45:191
263417999145,5cyclictest0-21swapper/020:46:400
263417999141,8cyclictest3006338-21kthreadcore23:40:190
2634179991411,2cyclictest2651974-21kthreadcore19:20:180
2634179991411,2cyclictest1246-21mta-sts-daemon22:20:080
2634179991410,3cyclictest2768312-21kthreadcore20:55:210
3153791131,3phc2sys0-21swapper/300:25:043
3153791130,2phc2sys0-21swapper/322:16:103
3153791130,2phc2sys0-21swapper/321:33:053
3153791130,2phc2sys0-21swapper/300:19:153
3153791130,2phc2sys0-21swapper/300:19:153
3153791130,2phc2sys0-21swapper/300:14:453
263418199138,3cyclictest0-21swapper/200:05:162
2634181991311,1cyclictest0-21swapper/223:35:132
2634181991311,1cyclictest0-21swapper/219:35:192
2634181991310,1cyclictest0-21swapper/221:03:362
2634180991310,2cyclictest2687490-21kthreadcore19:50:191
263417999134,8cyclictest1050-21snmpd19:40:060
263417999133,5cyclictest2667205-21tail19:35:130
3153791121,5phc2sys0-21swapper/322:40:143
3153791120,4phc2sys0-21swapper/323:17:123
3153791120,4phc2sys0-21swapper/321:00:103
3153791120,2phc2sys0-21swapper/323:07:463
3153791120,2phc2sys0-21swapper/320:30:213
3153791120,2phc2sys0-21swapper/320:24:083
3153791120,2phc2sys0-21swapper/320:05:013
3153791120,2phc2sys0-21swapper/319:10:133
3153791120,1phc2sys0-21swapper/323:57:133
263418199129,1cyclictest0-21swapper/219:25:202
2634181991210,1cyclictest0-21swapper/222:50:222
2634181991210,1cyclictest0-21swapper/219:10:022
263418099129,2cyclictest2756170-21kthreadcore20:45:201
3153791112,2phc2sys0-21swapper/322:45:113
3153791111,3phc2sys0-21swapper/319:25:223
3153791110,2phc2sys0-21swapper/323:52:403
3153791110,2phc2sys0-21swapper/323:46:073
3153791110,2phc2sys0-21swapper/323:35:013
3153791110,2phc2sys0-21swapper/319:50:263
3153791110,2phc2sys0-21swapper/319:38:553
3153791110,2phc2sys0-21swapper/300:05:153
3153791110,1phc2sys0-21swapper/320:45:323
3153791110,1phc2sys0-21swapper/319:34:193
3153791101,2phc2sys0-21swapper/323:37:503
3153791101,2phc2sys0-21swapper/319:20:253
3153791100,2phc2sys0-21swapper/323:27:323
3153791100,2phc2sys0-21swapper/322:55:173
3153791100,2phc2sys0-21swapper/322:27:203
3153791100,2phc2sys0-21swapper/322:14:143
3153791100,2phc2sys0-21swapper/321:35:053
3153791100,2phc2sys0-21swapper/321:25:513
3153791100,2phc2sys0-21swapper/321:20:143
3153791100,2phc2sys0-21swapper/321:15:213
3153791100,2phc2sys0-21swapper/321:10:123
3153791100,2phc2sys0-21swapper/320:55:133
3153791100,2phc2sys0-21swapper/319:50:023
3153791100,2phc2sys0-21swapper/300:00:143
315379190,2phc2sys0-21swapper/321:05:153
315379190,2phc2sys0-21swapper/320:40:193
315379190,2phc2sys0-21swapper/320:25:203
315379190,2phc2sys0-21swapper/320:10:143
315379190,2phc2sys0-21swapper/319:55:193
315379190,2phc2sys0-21swapper/319:40:163
315379190,2phc2sys0-21swapper/319:15:163
315379190,2phc2sys0-21swapper/319:05:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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