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2026-01-11 - 14:20
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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 rackdslot1.osadl.org (updated Sun Jan 11, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34521520,5sleep31030699cyclictest22:15:183
3050321380,4sleep11030499cyclictest23:20:151
188362620,3sleep318840-21cpuspeed_turbos00:05:143
134491590,4ptp4l0-21swapper/220:25:142
134491590,3ptp4l28715-21/usr/sbin/munin20:55:241
134491590,3ptp4l0-21swapper/223:15:062
134491580,5ptp4l0-21swapper/219:24:412
134491580,4ptp4l0-21swapper/322:05:213
134491570,3ptp4l7182-21ls20:10:232
134491570,3ptp4l0-21swapper/222:00:162
134491570,3ptp4l0-21swapper/219:35:042
134491560,4ptp4l1804-21df_inode20:00:200
134491560,4ptp4l0-21swapper/222:15:192
134491560,3ptp4l0-21swapper/300:27:253
134491550,4ptp4l0-21swapper/121:45:161
134491550,4ptp4l0-21swapper/019:24:070
134491550,3ptp4l0-21swapper/322:44:553
134491540,5ptp4l0-21swapper/021:22:430
134491540,4ptp4l0-21swapper/023:02:000
134491540,4ptp4l0-21swapper/023:02:000
134491540,4ptp4l0-21swapper/019:13:230
134491540,3ptp4l0-21swapper/022:09:370
134491540,13ptp4l11497-21apt22:39:592
134491530,4ptp4l0-21swapper/223:35:122
134491530,4ptp4l0-21swapper/220:35:272
134491530,4ptp4l0-21swapper/219:52:362
134491530,4ptp4l0-21swapper/023:50:590
1030499539,4cyclictest25-21ksoftirqd/120:25:001
134491520,3ptp4l0-21swapper/022:30:000
46342510,5sleep20-21swapper/223:35:002
134491510,4ptp4l0-21swapper/220:02:572
134491510,4ptp4l0-21swapper/200:04:262
134491510,4ptp4l0-21swapper/121:16:221
134491510,4ptp4l0-21swapper/021:28:480
134491510,3ptp4l0-21swapper/020:25:200
134491510,12ptp4l0-21swapper/200:10:212
1030399517,3cyclictest9-21ksoftirqd/021:37:380
134491500,4ptp4l1011-21apt-get20:00:033
134491500,4ptp4l0-21swapper/223:24:282
134491500,4ptp4l0-21swapper/119:46:451
134491500,4ptp4l0-21swapper/119:14:191
134491500,4ptp4l0-21swapper/020:40:320
134491500,3ptp4l0-21swapper/321:27:323
134491500,3ptp4l0-21swapper/221:40:002
134491500,12ptp4l23855-21ps23:05:202
10304995011,9cyclictest25-21ksoftirqd/100:33:291
134491490,9ptp4l0-21swapper/119:05:271
134491490,4ptp4l0-21swapper/221:26:232
134491490,4ptp4l0-21swapper/221:02:412
134491490,4ptp4l0-21swapper/220:51:342
134491490,4ptp4l0-21swapper/200:32:592
134491490,4ptp4l0-21swapper/122:33:471
134491490,4ptp4l0-21swapper/021:51:050
134491490,3ptp4l0-21swapper/220:49:052
134491490,3ptp4l0-21swapper/219:28:252
134491490,16ptp4l0-21swapper/319:19:233
134491490,12ptp4l0-21swapper/222:41:092
1030499497,8cyclictest25-21ksoftirqd/121:30:441
1030499497,8cyclictest25-21ksoftirqd/121:30:441
134491480,4ptp4l0-21swapper/023:10:520
134491480,4ptp4l0-21swapper/022:46:240
134491480,3ptp4l0-21swapper/222:25:242
134491480,2ptp4l0-21swapper/321:44:553
134491480,13ptp4l0-21swapper/023:20:240
10303994843,3cyclictest9-21ksoftirqd/023:50:010
1030399483,9cyclictest9-21ksoftirqd/022:35:000
134491470,4ptp4l0-21swapper/222:47:182
134491470,4ptp4l0-21swapper/221:31:052
134491470,4ptp4l0-21swapper/221:31:052
134491470,4ptp4l0-21swapper/020:50:220
134491470,4ptp4l0-21swapper/019:17:060
134491470,3ptp4l0-21swapper/221:43:472
134491470,3ptp4l0-21swapper/221:10:582
134491470,3ptp4l0-21swapper/219:33:362
134491470,14ptp4l12937-21proc_pri22:40:260
10305994740,4cyclictest30525-21grep22:10:192
1030499472,3cyclictest121rcu_preempt23:25:271
134491460,4ptp4l0-21swapper/222:57:002
134491460,4ptp4l0-21swapper/123:46:041
134491460,4ptp4l0-21swapper/120:46:041
134491460,4ptp4l0-21swapper/023:58:130
134491460,4ptp4l0-21swapper/020:48:420
134491460,3ptp4l0-21swapper/220:22:372
134491460,3ptp4l0-21swapper/220:09:122
134491460,3ptp4l0-21swapper/219:55:352
134491460,3ptp4l0-21swapper/219:19:212
134491460,3ptp4l0-21swapper/200:09:122
134491460,2ptp4l0-21swapper/319:20:513
10304994616,4cyclictest25-21ksoftirqd/119:35:231
1030499461,3cyclictest121rcu_preempt23:33:411
134491450,6ptp4l0-21swapper/019:06:480
134491450,4ptp4l2318-21gnome-shell21:52:571
134491450,4ptp4l0-21swapper/319:32:303
134491450,3ptp4l0-21swapper/220:16:342
134491450,3ptp4l0-21swapper/220:16:342
134491450,3ptp4l0-21swapper/200:35:312
134491450,2ptp4l0-21swapper/319:46:033
10306994538,4cyclictest21544-21irqrtprio23:00:183
10306994538,4cyclictest21544-21irqrtprio23:00:173
134491440,5ptp4l25570-21apt-get23:10:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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