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2026-06-08 - 19:43
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Mon Jun 08, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30901312309267,28sleep10-21swapper/107:09:171
30899592264192,27sleep00-21swapper/007:07:260
3090319995813,14cyclictest3282634-21sed12:25:011
31617002570,4sleep013-21ksoftirqd/009:40:140
3090319995513,12cyclictest3273004-21grep12:10:221
179699550,3rtkit-daemon1795-21rtkit-daemon08:39:391
3090319995413,11cyclictest3264428-21ls12:00:001
3090319995317,10cyclictest3287505-21/usr/sbin/munin12:30:231
3090319995313,9cyclictest3271744-21wc12:10:011
3090319995312,11cyclictest3116742-21latency_hist08:15:011
3090319995312,10cyclictest3112901-21grep08:05:011
179699530,3rtkit-daemon0-21swapper/110:15:260
3090319995213,9cyclictest1-21systemd08:30:001
3090319995211,12cyclictest3110103-21readlink07:55:251
3090319995113,15cyclictest3238844-21cpuspeed11:25:121
3090319995113,11cyclictest3243386-21/usr/sbin/munin11:30:241
179699500,4rtkit-daemon1795-21rtkit-daemon10:46:500
3090319994914,11cyclictest3235157-21apt-get11:20:151
3090319994914,10cyclictest3194567-21munin-run10:25:011
3090319994913,9cyclictest3104269-21mailstats07:40:271
3090319994913,14cyclictest3099729-21ps07:30:221
3090319994912,12cyclictest3291094-21switchtime12:35:241
3090319994828,13cyclictest3216774-21apt-get10:55:141
3090319994814,11cyclictest3136435-21systemd-run09:05:011
3090319994813,23cyclictest3285105-21rm12:27:281
3090319994813,11cyclictest3157636-21sh09:35:011
3090319994813,10cyclictest3258327-21mailstats11:50:231
3090319994812,9cyclictest3267930-21sh12:05:011
3090319994812,11cyclictest3157888-21dpkg09:35:131
3090319994812,11cyclictest3101861-21grep07:35:231
3090319994812,10cyclictest3137566-21tr09:05:221
3090319994812,10cyclictest3131793-21wc08:50:241
3090319994811,10cyclictest3225147-21mailstats11:05:241
179699480,4rtkit-daemon1795-21rtkit-daemon07:17:551
3090319994716,9cyclictest3128542-21taskset08:44:381
3090319994713,9cyclictest3138806-21gdbus09:10:021
3090319994712,14cyclictest3096042-21grep07:20:251
3090319994712,12cyclictest3113374-21fschecks_time08:05:171
3090319994712,11cyclictest3124174-21grep08:30:241
3090319994711,11cyclictest3106246-21grep07:45:231
3090319994629,10cyclictest3194815-21apt-get10:25:131
3090319994615,13cyclictest3153150-21ssh09:28:471
3090319994614,11cyclictest3138357-21diskmemload10:15:001
3090319994614,10cyclictest3231667-21fschecks_time11:15:151
3090319994614,10cyclictest3187748-21chrt10:15:161
3090319994613,23cyclictest3162883-21sshd09:40:301
3090319994612,15cyclictest3170001-21grep09:50:191
3090319994612,13cyclictest3119781-21ps08:20:221
3090319994612,13cyclictest3097399-21cat07:25:191
3090319994612,12cyclictest3176823-21grep10:00:161
3090319994612,11cyclictest3253545-21cut11:45:181
3090319994612,11cyclictest3213961-21ssh10:50:211
3090319994611,24cyclictest3172572-21cron09:59:551
3090319994611,11cyclictest3275731-21rm12:15:161
3090319994611,11cyclictest3250309-21tr11:40:191
3090319994517,9cyclictest3182430-21ssh10:07:121
3090319994515,9cyclictest3205447-21ssh10:39:561
3090319994513,9cyclictest3108912-21munin-run07:54:591
3090319994513,12cyclictest3138357-21diskmemload10:40:211
3090319994512,13cyclictest3246303-21cut11:35:171
3090319994512,12cyclictest3166751-21grep09:45:241
3090319994512,11cyclictest3138357-21diskmemload09:15:221
3090319994511,11cyclictest3138357-21diskmemload11:10:141
3090319994511,11cyclictest3091516-21switchtime07:10:241
179699450,4rtkit-daemon1795-21rtkit-daemon11:25:300
3090319994424,13cyclictest3209366-21apt-get10:45:131
3090319994415,9cyclictest3147466-21needreboot09:20:191
3090319994414,9cyclictest32226762sleep111:02:221
3090319994413,11cyclictest32005422chrt10:32:031
3090319994411,11cyclictest3133766-21grep08:55:241
3090319994313,9cyclictest3118704-21munin-plugin-st08:20:011
3090319994312,14cyclictest3129043-21grep08:45:161
179699420,4rtkit-daemon3284313-21ssh12:25:400
179699410,4rtkit-daemon1795-21rtkit-daemon09:31:540
179699410,3rtkit-daemon0-21swapper/107:53:120
179699400,3rtkit-daemon0-21swapper/009:18:350
179699380,6rtkit-daemon3167339-21ssh09:46:210
31028092370,5sleep03102694-21python307:40:020
3090315993629,5cyclictest3120624-21taskset08:23:370
179699350,6rtkit-daemon0-21swapper/108:16:530
179699330,4rtkit-daemon1795-21rtkit-daemon11:10:580
179699330,3rtkit-daemon0-21swapper/110:22:400
179699320,4rtkit-daemon1795-21rtkit-daemon11:58:240
179699320,3rtkit-daemon0-21swapper/110:31:000
179699310,3rtkit-daemon0-21swapper/108:35:470
179699300,3rtkit-daemon0-21swapper/110:25:570
179699300,1rtkit-daemon1795-21rtkit-daemon07:27:180
3090315992919,8cyclictest3095483-21kernelversion07:20:190
179699290,3rtkit-daemon0-21swapper/112:35:290
179699290,3rtkit-daemon0-21swapper/111:39:250
179699290,3rtkit-daemon0-21swapper/110:09:310
179699290,3rtkit-daemon0-21swapper/110:00:320
179699290,3rtkit-daemon0-21swapper/108:46:060
179699290,3rtkit-daemon0-21swapper/108:42:440
179699290,3rtkit-daemon0-21swapper/108:26:040
179699290,3rtkit-daemon0-21swapper/108:14:100
179699290,3rtkit-daemon0-21swapper/108:01:150
179699290,25rtkit-daemon3113998-21mailstats08:05:240
179699280,3rtkit-daemon0-21swapper/112:32:260
179699280,3rtkit-daemon0-21swapper/111:03:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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