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2026-05-18 - 13:21
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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 rackdslot3.osadl.org (updated Mon May 18, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116012206173,22sleep10-21swapper/119:05:391
139491205170,23phc2sys0-21swapper/319:05:093
116022203170,22sleep20-21swapper/219:05:402
117952202169,22sleep00-21swapper/019:08:040
139491163123,13phc2sys0-21swapper/319:10:023
290602750,1sleep20-21swapper/219:45:002
325942650,4sleep20-21swapper/221:00:132
12240996210,12cyclictest616-21gdbus21:20:253
12240996111,9cyclictest353-21mailstats22:05:243
1224099609,11cyclictest20352-21ls19:25:193
1224099608,16cyclictest23237-21cat21:45:283
1224099607,11cyclictest5350-21/usr/sbin/munin21:10:143
1224099598,10cyclictest7041-21cut20:05:203
1224099588,16cyclictest14567-21apt-get21:30:123
1224099579,9cyclictest15104-21sed22:35:243
1224099577,11cyclictest9154-21awk21:15:313
1224099577,11cyclictest28346-21grep23:05:173
1224099577,11cyclictest20841-21cat21:40:253
139391550,1ptp4l391rcuc/323:50:483
1224099557,17cyclictest23982-21/usr/sbin/munin00:05:163
57898530,8rtkit-daemon0-21swapper/200:08:492
1224099537,11cyclictest25781-21timerwakeupswit19:35:263
1224099537,11cyclictest15928-21/usr/sbin/munin22:40:173
269972520,2sleep00-21swapper/020:45:280
139391520,1ptp4l391rcuc/320:42:543
1224099528,17cyclictest7308-21cat23:30:013
1224099527,16cyclictest21745-21/usr/sbin/munin19:30:223
1224099526,17cyclictest0-21swapper/323:20:233
12240995110,11cyclictest25477-21awk21:50:233
12240995012,7cyclictest31019-21sshd19:46:553
12240995010,7cyclictest20186-21sshd20:33:543
1224099496,10cyclictest0-21swapper/322:25:113
12240994911,7cyclictest27164-21diskstats19:40:153
12239994911,6cyclictest33-21ksoftirqd/223:15:272
12239994911,6cyclictest33-21ksoftirqd/223:15:262
1224099486,8cyclictest31083-21ls20:55:183
1224099478,10cyclictest1300-21snmpd00:01:093
1224099477,17cyclictest26137-21ps23:00:203
12239994716,4cyclictest33-21ksoftirqd/222:15:002
1224099468,9cyclictest24450-21sensors22:55:243
1224099456,8cyclictest18517-21ls19:20:263
12239994515,4cyclictest33-21ksoftirqd/219:25:222
139391440,0ptp4l401ktimersoftd/300:19:173
1224099446,8cyclictest8192-21ls00:35:263
1224099446,10cyclictest29981-21latency_hist20:55:003
1223999447,3cyclictest33-21ksoftirqd/222:40:242
1223999443,3cyclictest33-21ksoftirqd/220:45:202
12239994433,9cyclictest33-21ksoftirqd/219:55:192
12239994424,3cyclictest33-21ksoftirqd/221:40:272
1224099435,8cyclictest18178-21ps21:35:243
12240994310,7cyclictest2518-21gnome-shell22:00:583
1224099427,8cyclictest2228-21diskstats00:25:153
12240994210,7cyclictest28661-21sshd00:13:543
12240994210,7cyclictest28661-21sshd00:13:533
12239994231,10cyclictest33-21ksoftirqd/223:40:132
12239994229,11cyclictest33-21ksoftirqd/219:20:192
139391410,0ptp4l401ktimersoftd/320:46:543
1224099419,7cyclictest2518-21gnome-shell23:46:593
1223999418,5cyclictest33-21ksoftirqd/221:05:282
1223999418,11cyclictest33-21ksoftirqd/220:15:012
1224099404,9cyclictest0-21swapper/322:10:253
1223999409,3cyclictest33-21ksoftirqd/200:40:012
1223999407,6cyclictest33-21ksoftirqd/223:55:182
1223999404,4cyclictest33-21ksoftirqd/200:20:012
12239994035,3cyclictest33-21ksoftirqd/222:00:002
12239994034,3cyclictest33-21ksoftirqd/223:20:142
12239994029,9cyclictest33-21ksoftirqd/221:31:372
1223999394,4cyclictest33-21ksoftirqd/223:35:002
1223999394,4cyclictest33-21ksoftirqd/222:55:242
12239993928,9cyclictest33-21ksoftirqd/222:20:252
12238993934,3cyclictest25-21ksoftirqd/122:15:001
57898380,2rtkit-daemon577-21rtkit-daemon20:15:202
1223999388,4cyclictest33-21ksoftirqd/200:20:192
1223999387,6cyclictest33-21ksoftirqd/219:10:222
1223999386,3cyclictest33-21ksoftirqd/223:10:002
1223999384,4cyclictest33-21ksoftirqd/223:50:002
12239993834,2cyclictest33-21ksoftirqd/219:40:022
12239993833,3cyclictest33-21ksoftirqd/222:40:002
12239993833,3cyclictest33-21ksoftirqd/222:00:192
12239993832,3cyclictest33-21ksoftirqd/220:40:012
12239993811,6cyclictest33-21ksoftirqd/221:25:152
12240993730,4cyclictest41-21ksoftirqd/320:05:003
1223999378,3cyclictest33-21ksoftirqd/223:50:232
1223999376,5cyclictest33-21ksoftirqd/223:30:012
1223999375,3cyclictest33-21ksoftirqd/222:45:192
1223999375,3cyclictest33-21ksoftirqd/220:05:002
1223999373,9cyclictest33-21ksoftirqd/222:05:232
1223999373,3cyclictest33-21ksoftirqd/219:15:282
12239993732,3cyclictest33-21ksoftirqd/222:30:012
12239993732,3cyclictest33-21ksoftirqd/220:26:212
12239993730,4cyclictest33-21ksoftirqd/221:51:332
12239993728,6cyclictest33-21ksoftirqd/223:00:052
12239993726,9cyclictest33-21ksoftirqd/200:10:142
12239993726,9cyclictest33-21ksoftirqd/200:10:142
12239993726,3cyclictest33-21ksoftirqd/221:00:002
1223999371,7cyclictest33-21ksoftirqd/222:50:262
1223999371,6cyclictest33-21ksoftirqd/220:20:152
12238993731,4cyclictest25-21ksoftirqd/121:37:121
12237993732,3cyclictest19049-21cron21:40:010
12237993730,4cyclictest9-21ksoftirqd/022:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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