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2026-08-26 - 06:50
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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 rackdslot4.osadl.org (updated Wed Aug 26, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591235168,23phc2sys0-21swapper/319:07:423
77812206174,21sleep20-21swapper/219:07:202
79252205170,23sleep10-21swapper/119:09:121
79242199166,22sleep00-21swapper/019:09:110
121492560,1sleep10-21swapper/121:25:281
138491540,1ptp4l401ktimersoftd/323:55:163
138491530,1ptp4l391rcuc/323:10:293
828399522,17cyclictest23541-21sed22:55:192
828399521,11cyclictest7661-21cat00:35:002
828399520,17cyclictest3028-21df_abs23:20:152
8282995224,3cyclictest25-21ksoftirqd/120:00:191
8282995119,4cyclictest25-21ksoftirqd/123:00:011
204502510,1sleep30-21swapper/322:50:153
828399501,16cyclictest5583-21cat20:10:002
828399501,16cyclictest5323-21cat21:15:012
828399491,9cyclictest14109-21irqrtprio20:25:342
8282994923,3cyclictest25-21ksoftirqd/121:35:131
8282994917,10cyclictest25-21ksoftirqd/121:45:221
8284994841,4cyclictest25214-21cron20:50:003
8284994841,4cyclictest25214-21cron20:50:003
8282994820,7cyclictest25-21ksoftirqd/119:19:591
8282994818,7cyclictest25-21ksoftirqd/122:10:141
134991480,6getstats828499cyclictest00:31:093
828399471,11cyclictest28149-21fschecks_count00:10:152
8282994721,7cyclictest25-21ksoftirqd/100:35:281
8282994721,7cyclictest25-21ksoftirqd/100:35:281
8282994710,2cyclictest121rcu_preempt21:10:201
8281994739,4cyclictest9-21ksoftirqd/021:59:590
8282994618,9cyclictest25-21ksoftirqd/123:35:001
828399452,15cyclictest15607-21/usr/sbin/munin20:30:202
828399451,4cyclictest0-21swapper/219:25:012
828399451,4cyclictest0-21swapper/219:25:002
828399451,16cyclictest17766-21grep22:45:112
828399450,17cyclictest9044-21sendmail_mailtr23:30:262
828399450,14cyclictest11667-21irqrtprio19:15:192
828299457,4cyclictest25-21ksoftirqd/122:45:221
8282994519,7cyclictest25-21ksoftirqd/122:30:231
8282994515,4cyclictest25-21ksoftirqd/120:30:251
8282994515,4cyclictest25-21ksoftirqd/119:40:231
8282994512,8cyclictest25-21ksoftirqd/123:45:131
8282994511,2cyclictest121rcu_preempt22:25:211
138491450,0ptp4l401ktimersoftd/322:25:203
828399442,15cyclictest16946-21timerwakeupswit22:40:262
828399441,12cyclictest19071-21sed19:30:202
8282994414,3cyclictest25-21ksoftirqd/122:41:321
8282994413,3cyclictest25-21ksoftirqd/100:20:171
8284994338,3cyclictest23562-21fschecks_count19:40:153
828399431,7cyclictest23929-21ssh00:00:262
828399430,8cyclictest6486-21ps23:25:232
828399430,7cyclictest17947-21latency_hist19:30:002
828299438,4cyclictest25-21ksoftirqd/123:15:241
828299438,4cyclictest25-21ksoftirqd/120:10:241
828299437,4cyclictest25-21ksoftirqd/100:10:171
828299435,8cyclictest25-21ksoftirqd/120:05:191
8282994317,7cyclictest25-21ksoftirqd/119:50:011
8282994316,5cyclictest25-21ksoftirqd/122:05:161
8282994314,3cyclictest25-21ksoftirqd/119:32:521
8282994313,4cyclictest25-21ksoftirqd/123:40:271
8282994311,7cyclictest25-21ksoftirqd/123:09:441
8282994311,4cyclictest25-21ksoftirqd/120:55:281
8282994310,7cyclictest25-21ksoftirqd/100:25:271
138491430,0ptp4l401ktimersoftd/323:22:003
138491430,0ptp4l401ktimersoftd/322:55:213
128602430,1sleep10-21swapper/122:35:111
828299429,7cyclictest25-21ksoftirqd/121:50:141
828299429,6cyclictest25-21ksoftirqd/119:25:191
828299429,4cyclictest25-21ksoftirqd/100:05:191
828299428,4cyclictest25-21ksoftirqd/119:10:241
828299427,4cyclictest25-21ksoftirqd/123:25:151
828299427,4cyclictest25-21ksoftirqd/122:50:241
8282994237,3cyclictest25-21ksoftirqd/120:29:591
8282994235,4cyclictest25-21ksoftirqd/100:00:001
8282994214,3cyclictest25-21ksoftirqd/121:15:161
8282994214,3cyclictest25-21ksoftirqd/120:45:261
8282994214,3cyclictest25-21ksoftirqd/120:45:251
8282994212,4cyclictest25-21ksoftirqd/120:21:551
828399413,8cyclictest965-21perl00:20:162
828399412,8cyclictest26424-21ps23:00:232
828399412,16cyclictest1067-21perl21:05:242
828299418,10cyclictest25-21ksoftirqd/119:40:001
828299416,4cyclictest25-21ksoftirqd/123:50:251
828299416,4cyclictest25-21ksoftirqd/120:35:171
828299415,8cyclictest25-21ksoftirqd/122:20:221
828299415,4cyclictest25-21ksoftirqd/121:30:181
828299415,4cyclictest25-21ksoftirqd/100:15:261
828299414,8cyclictest25-21ksoftirqd/123:00:261
828299413,8cyclictest25-21ksoftirqd/120:50:271
828299413,8cyclictest25-21ksoftirqd/119:55:221
8282994117,6cyclictest25-21ksoftirqd/119:20:221
8282994117,6cyclictest25-21ksoftirqd/119:20:221
8282994116,6cyclictest25-21ksoftirqd/122:20:001
8282994115,7cyclictest25-21ksoftirqd/121:05:221
8282994114,4cyclictest25-21ksoftirqd/121:57:321
138491410,0ptp4l401ktimersoftd/323:38:323
138491410,0ptp4l401ktimersoftd/323:31:333
138491410,0ptp4l401ktimersoftd/321:35:263
828399402,7cyclictest1233-21diskstats20:00:152
828399402,15cyclictest25081-21/usr/sbin/munin00:05:212
828399401,8cyclictest30695-21perl00:15:182
828399400,8cyclictest20554-21apt-get20:40:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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