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2026-06-25 - 09:23
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot7.osadl.org (updated Thu Jun 25, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89359912139,32cyclictest0-21swapper/023:03:370
89469911560,49cyclictest15847-21diskmemload21:20:371
89469911243,17cyclictest0-21swapper/120:58:251
89359910740,29cyclictest6543-21seq00:18:490
89359910435,26cyclictest0-21swapper/021:54:280
89359910354,39cyclictest19676-21snmpd23:13:320
89359910342,23cyclictest9220-21/usr/sbin/munin00:23:430
89469910274,22cyclictest20587-21ssh22:53:491
89359910233,30cyclictest24035-21ssh21:11:050
89359910140,22cyclictest4902-21ssh21:33:430
89359910041,23cyclictest28180-21ssh21:18:370
89359910037,27cyclictest4504-21ssh00:14:580
89359910036,25cyclictest21271-21ssh21:06:480
89359910036,25cyclictest21271-21ssh21:06:480
89359910031,25cyclictest0-21swapper/021:23:510
2979021000,7sleep20-21swapper/219:58:592
2979021000,7sleep20-21swapper/219:58:592
8935999940,22cyclictest11302-21seq19:03:440
8935999937,26cyclictest22692-21ssh22:58:090
8935999930,19cyclictest0-21swapper/019:38:590
8935999837,29cyclictest1695-21/usr/sbin/munin21:28:530
8935999744,41cyclictest20827-21/usr/sbin/munin19:34:020
8935999744,18cyclictest23303-21/usr/sbin/munin22:58:430
8935999744,18cyclictest23303-21/usr/sbin/munin22:58:430
8935999738,26cyclictest14175-21sh22:43:340
8935999737,24cyclictest25218-21sh22:07:360
8935999736,27cyclictest0-21swapper/021:43:380
8935999735,23cyclictest4773-21fschecks_time20:23:440
8935999640,23cyclictest29214-21ssh22:13:480
8935999639,21cyclictest29234-21ssh23:08:400
8935999638,26cyclictest10417-21ssh21:43:240
8935999638,26cyclictest10417-21ssh21:43:240
8935999637,24cyclictest11507-21sh23:33:380
8935999637,24cyclictest11507-21sh23:33:380
8935999635,26cyclictest2202-21rm00:11:510
8935999538,23cyclictest21507-21ssh23:49:010
8935999537,26cyclictest28163-21ssh22:12:290
8935999537,26cyclictest28163-21ssh22:12:290
8935999536,19cyclictest9301-21head22:33:590
8935999443,40cyclictest9163-21/usr/sbin/munin18:58:390
8935999438,23cyclictest17597-21taskset23:43:410
8935999437,22cyclictest9964-21proc_pri20:38:550
8935999435,21cyclictest0-21swapper/019:28:560
8935999433,23cyclictest3416-21taskset22:24:050
8946999372,14cyclictest29119-21fschecks_time22:13:461
8946999310,72cyclictest26565-21apt-get23:58:531
8935999340,19cyclictest23384-21ssh23:53:320
8935999339,20cyclictest6128-21sh22:28:570
8935999337,21cyclictest15150-21rm21:49:560
8935999337,21cyclictest15150-21rm21:49:560
8935999337,19cyclictest529-21timerwakeupswit20:08:590
8935999337,19cyclictest529-21timerwakeupswit20:08:590
8935999337,19cyclictest19676-21snmpd23:59:390
8935999335,24cyclictest17314-21ssh20:59:070
8935999335,24cyclictest17314-21ssh20:59:070
8935999334,26cyclictest0-21swapper/023:18:350
8935999334,26cyclictest0-21swapper/023:18:350
8935999333,25cyclictest8474-21/usr/sbin/munin23:28:440
8935999330,23cyclictest0-21swapper/023:41:460
8935999240,22cyclictest352-21runrttasks20:48:360
8935999238,23cyclictest15994-21sed20:58:250
8935999238,21cyclictest15847-21diskmemload00:03:370
8935999237,24cyclictest21255-21rm21:59:460
8935999237,24cyclictest21255-21rm21:59:460
8935999236,22cyclictest18620-21seq19:24:180
8935999139,18cyclictest11246-21ssh22:38:390
8935999137,21cyclictest19724-21sh22:53:070
8935999136,23cyclictest6965-21rm23:25:020
8935999130,22cyclictest0-21swapper/021:15:140
8935999130,22cyclictest0-21swapper/021:15:140
8935999048,32cyclictest0-21swapper/019:08:340
8935999036,23cyclictest1232-21rm22:21:200
8935999034,21cyclictest0-21swapper/020:28:540
8935998955,24cyclictest8921-21cyclictest18:58:270
8935998955,24cyclictest8921-21cyclictest18:58:270
8935998936,22cyclictest27291-21/usr/sbin/munin19:53:480
8935998936,22cyclictest27291-21/usr/sbin/munin19:53:480
779228911,39sleep20-21swapper/218:53:522
779228911,39sleep20-21swapper/218:53:522
8935998859,20cyclictest32061-21latency_hist20:08:260
8935998840,18cyclictest2654-21modprobe20:18:220
8935998840,18cyclictest2654-21modprobe20:18:220
8935998839,18cyclictest29897-21seq19:59:010
8935998839,18cyclictest29897-21seq19:59:010
8935998833,21cyclictest0-21swapper/020:33:490
8935998830,20cyclictest0-21swapper/019:13:410
8946998751,13cyclictest181rcu_preempt23:53:351
8946998657,21cyclictest14067-21latency_hist22:43:251
8935998636,20cyclictest16152-21df19:18:420
8935998636,20cyclictest16152-21df19:18:420
8935998633,19cyclictest0-21swapper/020:43:470
8955998562,15cyclictest11826-21sh00:28:242
8955998557,21cyclictest10423-21kworker/u17:3-rpciod22:28:582
8955998556,22cyclictest22410-21latency_hist19:38:262
894699851,42cyclictest12536-21tr19:08:231
8955998458,18cyclictest15847-21diskmemload21:10:252
8955998362,14cyclictest14015-21latency_hist22:43:252
8955998357,18cyclictest23075-21sh22:58:322
8955998357,18cyclictest23075-21sh22:58:322
8935998333,22cyclictest0-21swapper/019:48:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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