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2025-12-11 - 12:07
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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 Thu Dec 11, 2025 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32189592261190,55sleep10-21swapper/119:05:081
1258992430,76rtkit-daemon3398206-21cat00:10:160
32203702239196,27sleep00-21swapper/019:06:170
3220866992057,183cyclictest3302947-21netstat21:55:211
3220866992018,179cyclictest3306141-21fw_packets22:00:191
3220861992017,180cyclictest3417701-21apt-config00:38:540
3220866991967,176cyclictest3320909-21switchtime22:20:241
3220866991947,173cyclictest3398226-21df00:10:151
3220866991936,173cyclictest3417793-21apt-config00:38:561
32208619916457,83cyclictest3305983-21runrttasks22:00:170
32208669914558,72cyclictest3373372-21df23:35:151
334459321410,4sleep126-21ksoftirqd/122:55:011
322086199141100,29cyclictest3302968-21ssh21:55:210
32208619912838,77cyclictest3358930-21expr23:15:160
32208619912334,77cyclictest3316436-21expr22:15:140
3220861991143,98cyclictest3373337-21cstates23:35:140
3220866998175,4cyclictest3316981-21strings22:15:191
32939612740,4sleep10-21swapper/121:42:271
125899580,3rtkit-daemon1257-21rtkit-daemon21:12:010
125899570,3rtkit-daemon0-21swapper/000:22:580
125899560,3rtkit-daemon0-21swapper/022:26:460
33408572550,17sleep013-21ksoftirqd/022:50:010
125899550,3rtkit-daemon0-21swapper/023:57:520
125899540,4rtkit-daemon3311098-21ssh22:06:400
125899540,4rtkit-daemon1257-21rtkit-daemon23:22:480
125899540,3rtkit-daemon0-21swapper/022:10:580
125899540,3rtkit-daemon0-21swapper/000:29:510
125899530,3rtkit-daemon0-21swapper/021:53:220
125899520,7rtkit-daemon3375333-1kworker/u9:200:07:540
125899520,4rtkit-daemon1257-21rtkit-daemon23:02:210
125899520,3rtkit-daemon1257-21rtkit-daemon20:55:560
125899520,3rtkit-daemon0-21swapper/022:24:200
33267152510,7sleep00-21swapper/022:30:110
125899510,4rtkit-daemon1257-21rtkit-daemon20:47:460
125899510,4rtkit-daemon1257-21rtkit-daemon20:21:330
125899510,4rtkit-daemon1257-21rtkit-daemon19:51:240
125899510,11rtkit-daemon3357935-21rm23:13:461
125899500,3rtkit-daemon1257-21rtkit-daemon23:31:450
125899490,4rtkit-daemon1257-21rtkit-daemon19:37:140
125899490,19rtkit-daemon0-21swapper/123:11:400
125899490,18rtkit-daemon1257-21rtkit-daemon22:57:000
125899480,4rtkit-daemon1257-21rtkit-daemon20:02:180
125899480,4rtkit-daemon1257-21rtkit-daemon19:26:570
125899450,5rtkit-daemon3299635-21systemctl21:50:251
125899440,14rtkit-daemon0-21swapper/121:15:400
125899430,14rtkit-daemon0-21swapper/123:40:490
125899430,13rtkit-daemon0-21swapper/100:34:520
32228902410,1sleep00-21swapper/019:15:020
125899410,3rtkit-daemon0-21swapper/000:01:550
125899410,14rtkit-daemon0-21swapper/121:31:110
125899410,14rtkit-daemon0-21swapper/121:00:130
125899380,5rtkit-daemon1257-21rtkit-daemon22:45:160
125899370,4rtkit-daemon1257-21rtkit-daemon19:10:170
125899360,6rtkit-daemon1257-21rtkit-daemon19:40:150
125899360,3rtkit-daemon0-21swapper/022:06:041
125899360,3rtkit-daemon0-21swapper/021:48:450
125899350,4rtkit-daemon0-21swapper/023:02:341
32603122340,1sleep10-21swapper/120:45:211
3220866993430,2cyclictest3289157-21chrt21:35:371
125899340,4rtkit-daemon1257-21rtkit-daemon22:43:280
125899340,3rtkit-daemon0-21swapper/023:16:391
125899340,3rtkit-daemon0-21swapper/000:08:591
125899330,3rtkit-daemon0-21swapper/022:27:141
125899330,3rtkit-daemon0-21swapper/022:11:041
125899330,21rtkit-daemon3366306-21df23:25:160
3220866993221,6cyclictest3391087-21apt-get00:00:171
3220861993229,2cyclictest63750irq/132-enp2s020:38:150
125899320,3rtkit-daemon0-21swapper/022:40:181
125899310,3rtkit-daemon0-21swapper/023:21:281
125899300,3rtkit-daemon0-21swapper/022:55:451
125899300,3rtkit-daemon0-21swapper/020:10:111
125899300,3rtkit-daemon0-21swapper/000:17:051
33310272290,3sleep13331025-21ntp_states22:35:221
322086699292,21cyclictest3261509-21apt-get20:50:141
125899280,1rtkit-daemon1257-21rtkit-daemon23:05:020
33831662270,21sleep13269551-21diskmemload23:49:321
125899270,23rtkit-daemon1263-21sendmail-mta21:37:100
125899270,1rtkit-daemon1257-21rtkit-daemon19:13:201
3220866992623,2cyclictest63750irq/132-enp2s023:41:451
322086699262,16cyclictest3387123-21apt-get23:55:111
322086699262,16cyclictest3231332-21apt-get19:35:121
322086199261,20cyclictest3225479-21apt-get19:20:140
322086699252,16cyclictest3295146-21apt-get21:45:091
322086699250,6cyclictest0-21swapper/119:59:221
3220861992520,3cyclictest3279719-21chrt21:23:130
125899250,1rtkit-daemon1257-21rtkit-daemon19:51:311
322086699246,11cyclictest3229383-21apt-get19:30:141
322086699243,12cyclictest3277188-21apt-get21:20:151
322086699242,15cyclictest3326711-21apt-get22:30:131
3220866992419,3cyclictest3245117-21seq20:08:531
322086699240,6cyclictest0-21swapper/123:25:351
322086699240,5cyclictest0-21swapper/121:31:411
322086699240,11cyclictest3352156-21/usr/sbin/munin23:05:201
125899240,4rtkit-daemon1257-21rtkit-daemon00:25:101
125899240,1rtkit-daemon1257-21rtkit-daemon23:33:511
125899240,1rtkit-daemon1257-21rtkit-daemon20:29:341
125899240,1rtkit-daemon1257-21rtkit-daemon19:20:061
322086699238,6cyclictest26-21ksoftirqd/121:00:241
322086699234,17cyclictest3269552-21latency_hist21:10:011
3220866992316,5cyclictest3235118-21grep19:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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