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2026-09-23 - 21:16
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Wed Sep 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
42992800,1sleep14301-21sh11:53:011
522327259,8sleep10-21swapper/107:07:261
515526755,8sleep00-21swapper/007:06:420
5443993710,25cyclictest0-21swapper/010:08:550
544499320,31cyclictest0-21swapper/109:30:271
544499300,13cyclictest0-21swapper/108:43:001
5444992918,4cyclictest15871-21ssh12:08:311
5443992910,3cyclictest0-21swapper/009:58:340
544399290,24cyclictest0-21swapper/011:53:080
5443992827,1cyclictest0-21swapper/009:08:020
5443992810,17cyclictest0-21swapper/007:26:190
5444992710,0cyclictest0-21swapper/107:38:201
5444992510,8cyclictest0-21swapper/108:28:031
5444992510,7cyclictest0-21swapper/109:58:311
5443992517,5cyclictest100150irq/106-eth1-rx10:51:210
5443992511,12cyclictest10851-1kworker/u5:109:53:030
544399250,16cyclictest0-21swapper/011:08:070
5444992410,1cyclictest0-21swapper/112:20:211
5443992418,3cyclictest25666-21snmpd07:10:570
5443992412,6cyclictest24924-21fschecks_time12:23:030
5443992410,6cyclictest0-21swapper/010:52:520
5443992410,5cyclictest0-21swapper/012:01:380
5443992410,10cyclictest0-21swapper/012:37:100
5444992323,0cyclictest0-21swapper/110:38:581
544499231,21cyclictest0-21swapper/109:43:001
5444992311,4cyclictest7574-21ssh10:23:041
5444992310,5cyclictest0-21swapper/110:52:341
5444992310,0cyclictest0-21swapper/111:12:561
5443992319,4cyclictest15313-21apache210:38:080
5443992318,1cyclictest7913-21ntp_states10:23:070
544399231,4cyclictest0-21swapper/011:42:350
5443992310,6cyclictest0-21swapper/009:48:120
5443992310,6cyclictest0-21swapper/009:13:010
5443992310,5cyclictest0-21swapper/009:32:040
5443992310,4cyclictest0-21swapper/012:04:550
5443992310,0cyclictest0-21swapper/008:52:190
544399230,22cyclictest0-21swapper/009:43:380
544499222,19cyclictest5462-21/usr/sbin/munin07:08:091
5444992219,2cyclictest0-21swapper/110:19:021
5444992215,5cyclictest15336-21apache207:35:081
5444992211,6cyclictest100150irq/106-eth1-rx10:54:051
5444992210,9cyclictest0-21swapper/109:50:001
5444992210,8cyclictest0-21swapper/111:12:241
5444992210,8cyclictest0-21swapper/110:33:111
5444992210,8cyclictest0-21swapper/110:30:411
5444992210,7cyclictest0-21swapper/109:33:011
544399220,21cyclictest17830-21df09:03:030
544499215,9cyclictest0-21swapper/112:03:001
544499214,7cyclictest13943-21/usr/sbin/munin11:18:091
5444992115,4cyclictest0-21swapper/111:38:061
5444992112,3cyclictest0-21swapper/111:36:411
5444992111,8cyclictest16849-21munin-node09:57:041
544499211,13cyclictest0-21swapper/112:33:071
5444992110,6cyclictest0-21swapper/111:30:571
5444992110,5cyclictest0-21swapper/110:58:031
5444992110,4cyclictest0-21swapper/107:48:061
5444992110,3cyclictest0-21swapper/111:03:001
544499210,0cyclictest0-21swapper/110:43:591
544399218,10cyclictest121rcuc/010:28:060
544399216,5cyclictest19375-21diskmemload11:18:010
5443992121,0cyclictest0-21swapper/010:12:530
5443992110,8cyclictest0-21swapper/008:03:030
5443992110,7cyclictest100250irq/107-eth1-rx11:48:320
5443992110,7cyclictest0-21swapper/008:18:000
5443992110,6cyclictest0-21swapper/012:20:050
5443992110,5cyclictest0-21swapper/011:03:020
5443992110,4cyclictest0-21swapper/009:18:300
544399210,9cyclictest0-21swapper/008:55:300
544399210,14cyclictest0-21swapper/007:33:070
2989222110,0sleep10-21swapper/112:29:221
5444992018,1cyclictest30761-21sh11:43:091
5444992018,1cyclictest24-21ksoftirqd/109:12:501
5444992018,1cyclictest19375-21diskmemload10:06:231
5444992015,3cyclictest0-21swapper/108:39:061
5444992010,6cyclictest0-21swapper/109:38:071
5444992010,5cyclictest648-21nscd09:18:051
5444992010,5cyclictest0-21swapper/107:43:021
5444992010,3cyclictest0-21swapper/111:51:511
544399206,9cyclictest0-21swapper/011:33:010
544399205,9cyclictest0-21swapper/011:13:090
544399203,13cyclictest0-21swapper/009:23:020
544399202,18cyclictest0-21swapper/012:10:270
5443992019,1cyclictest802-21apache212:29:240
544399200,1cyclictest5628-21ntp_states09:33:070
977821910,0sleep00-21swapper/007:18:040
5444991915,1cyclictest0-21swapper/107:24:161
5444991910,4cyclictest0-21swapper/111:58:371
5444991910,4cyclictest0-21swapper/109:03:041
544399195,6cyclictest0-21swapper/012:13:100
544399195,6cyclictest0-21swapper/007:38:000
544399193,11cyclictest0-21swapper/008:28:020
5443991917,1cyclictest0-21swapper/007:57:490
5443991916,1cyclictest25570-21/usr/sbin/munin10:03:030
5443991911,4cyclictest15313-21apache210:47:350
5443991910,4cyclictest0-21swapper/011:28:080
5443991910,2cyclictest0-21swapper/010:17:510
5443991910,0cyclictest0-21swapper/008:38:100
1139321910,0sleep00-21swapper/008:45:210
544499183,8cyclictest15533-21ls08:57:501
5444991813,4cyclictest15313-21apache208:06:461
5444991811,2cyclictest5441-21cyclictest08:58:091
5444991810,5cyclictest0-21swapper/109:15:001
5444991810,5cyclictest0-21swapper/108:18:091
5444991810,4cyclictest0-21swapper/108:33:071
5444991810,3cyclictest599-21avahi-daemon08:25:171
5444991810,3cyclictest0-21swapper/110:09:501
544399183,8cyclictest0-21swapper/010:58:100
5443991810,3cyclictest0-21swapper/011:25:420
5443991810,3cyclictest0-21swapper/007:58:060
5443991810,1cyclictest0-21swapper/008:10:420
544399180,17cyclictest0-21swapper/007:28:110
2262021810,2sleep00-21swapper/007:49:430
544499178,6cyclictest0-21swapper/108:13:031
544499172,8cyclictest0-21swapper/110:13:001
5444991715,1cyclictest15336-21apache208:08:161
5444991710,1cyclictest0-21swapper/108:51:531
544499170,6cyclictest0-21swapper/112:23:471
544399173,10cyclictest0-21swapper/008:33:070
5443991712,3cyclictest0-21swapper/009:41:070
5443991710,4cyclictest0-21swapper/010:33:020
5443991710,4cyclictest0-21swapper/008:27:390
5443991710,3cyclictest0-21swapper/008:13:010
3158821710,0sleep00-21swapper/011:44:440
544499163,7cyclictest23636-21irqstats07:53:051
544499162,6cyclictest25342-21perl07:58:001
544499162,11cyclictest0-21swapper/112:13:041
5444991613,2cyclictest19375-21diskmemload09:24:121
5444991610,2cyclictest0-21swapper/111:25:301
544399163,9cyclictest0-21swapper/007:13:110
5443991610,3cyclictest0-21swapper/008:58:010
5443991610,3cyclictest0-21swapper/007:43:050
544499152,9cyclictest0-21swapper/107:28:111
544499152,5cyclictest9590-21/usr/sbin/munin07:18:021
5444991511,1cyclictest0-21swapper/107:13:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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