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2026-05-28 - 19:55
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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 Thu May 28, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1109221620,2sleep2315199cyclictest08:35:162
2938721550,3sleep0314999cyclictest10:25:010
315099682,37cyclictest0-21swapper/108:00:221
315099650,62cyclictest13439-21iostat07:30:171
157582650,5sleep20-21swapper/207:35:132
315099641,60cyclictest1110-21users10:30:281
326322630,5sleep132470-21irqrtprio09:20:191
315099631,24cyclictest24292-21timerandwakeup11:20:271
226552630,7sleep3315299cyclictest10:10:113
134491620,5ptp4l0-21swapper/310:00:183
104552620,4sleep20-21swapper/210:50:262
315099600,14cyclictest134491ptp4l08:40:241
134491590,16ptp4l3917-21latency_hist09:30:000
315099588,24cyclictest29445-21cat11:34:551
315099571,35cyclictest17571-21taskset12:16:001
315099571,35cyclictest17571-21taskset12:16:001
134491570,4ptp4l0-21swapper/107:05:261
134491570,4ptp4l0-21swapper/011:02:360
315099561,28cyclictest22208-21seq10:07:361
134491560,3ptp4l0-21swapper/011:15:010
315099552,31cyclictest0-21swapper/111:00:301
134491550,4ptp4l0-21swapper/310:41:133
134491550,3ptp4l0-21swapper/109:05:231
315099541,27cyclictest12285-21seq07:29:171
315099540,3cyclictest25808-21kernelversion10:15:191
134491540,4ptp4l4186-21sort08:20:170
134491540,4ptp4l4186-21sort08:20:170
134491540,4ptp4l0-21swapper/009:56:410
134491540,4ptp4l0-21swapper/007:09:220
315099530,4cyclictest29342-21expr08:05:141
315099530,29cyclictest24562-21seq09:03:051
134491530,4ptp4l0-21swapper/007:45:090
134491530,3ptp4l0-21swapper/309:20:203
134491520,4ptp4l0-21swapper/008:07:310
134491520,3ptp4l0-21swapper/308:34:403
134491510,4ptp4l0-21swapper/012:16:060
134491510,4ptp4l0-21swapper/012:16:060
134491510,4ptp4l0-21swapper/011:53:070
134491510,4ptp4l0-21swapper/010:43:450
134491510,3ptp4l0-21swapper/311:01:073
134491510,3ptp4l0-21swapper/008:15:170
134491510,11ptp4l0-21swapper/207:17:202
315099501,27cyclictest5666-21taskset08:23:041
315099501,27cyclictest5666-21taskset08:23:041
134491500,4ptp4l0-21swapper/010:30:540
134491500,4ptp4l0-21swapper/008:43:290
315099490,28cyclictest8348-21taskset09:37:501
134491490,4ptp4l0-21swapper/008:47:220
134491490,4ptp4l0-21swapper/008:35:410
134491490,3ptp4l0-21swapper/011:39:570
134491490,3ptp4l0-21swapper/007:59:180
315099481,27cyclictest3495-21taskset10:35:271
134491480,8ptp4l0-21swapper/211:19:242
134491480,4ptp4l0-21swapper/009:48:350
134491480,4ptp4l0-21swapper/007:20:160
134491480,3ptp4l0-21swapper/009:24:440
134491470,4ptp4l0-21swapper/011:57:390
134491470,4ptp4l0-21swapper/010:27:400
134491470,4ptp4l0-21swapper/007:11:340
134491470,3ptp4l0-21swapper/012:20:120
315099469,25cyclictest24602-21seq10:13:531
315099462,23cyclictest0-21swapper/108:34:281
315099460,32cyclictest28112-21/usr/sbin/munin10:20:191
315099460,32cyclictest1898-21taskset11:45:061
134491460,3ptp4l0-21swapper/008:30:260
315099458,23cyclictest3875-21seq09:29:521
315099451,28cyclictest31494-21chrt10:28:391
315099450,27cyclictest902-21seq08:12:181
315099450,27cyclictest22246-21seq12:26:481
134491450,4ptp4l20453-21apt-get12:25:133
134491450,4ptp4l0-21swapper/011:29:350
134491450,4ptp4l0-21swapper/007:54:380
315099441,29cyclictest1-21systemd10:02:051
134491440,9ptp4l0-21swapper/212:07:112
134491440,9ptp4l0-21swapper/210:13:232
134491440,9ptp4l0-21swapper/210:01:282
134491440,8ptp4l0-21swapper/112:02:591
134491440,5ptp4l0-21swapper/207:30:032
134491440,4ptp4l6479-21apt-get09:35:103
134491440,4ptp4l0-21swapper/207:55:122
134491440,3ptp4l13605-21apt-get11:00:112
134491440,3ptp4l0-21swapper/211:26:492
134491440,3ptp4l0-21swapper/209:19:012
134491440,3ptp4l0-21swapper/109:55:361
134491440,3ptp4l0-21swapper/109:51:341
134491440,3ptp4l0-21swapper/009:05:090
134491440,12ptp4l0-21swapper/212:30:202
315199430,2cyclictest137891phc2sys09:45:282
315099431,28cyclictest5882-21taskset10:41:111
315099430,3cyclictest134491ptp4l12:35:211
134491430,9ptp4l0-21swapper/211:22:432
134491430,9ptp4l0-21swapper/211:07:302
134491430,9ptp4l0-21swapper/210:06:212
134491430,9ptp4l0-21swapper/209:06:482
134491430,8ptp4l0-21swapper/212:01:342
134491430,8ptp4l0-21swapper/210:32:412
134491430,8ptp4l0-21swapper/207:40:552
134491430,6ptp4l24328-21ls11:20:280
134491430,5ptp4l11190-21apt-get12:05:113
134491430,4ptp4l0-21swapper/308:55:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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