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2026-07-04 - 03:18
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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 Sat Jul 04, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1689021909,81sleep216908-21munin-run18:57:482
16991991145,38cyclictest17846-21apt-get00:23:020
16991991135,32cyclictest2812-21sshd23:03:160
16991991135,32cyclictest2812-21sshd23:03:160
169919911256,50cyclictest29423-21ssh22:53:190
169919911245,8cyclictest0-21swapper/022:28:140
16991991084,42cyclictest27414-21/usr/sbin/munin21:03:060
16991991083,28cyclictest1743-21sendmail_mailst21:13:210
169919910831,9cyclictest0-21swapper/022:36:300
169919910822,29cyclictest25990-21cat23:42:480
169919910822,29cyclictest25990-21cat23:42:480
170089910745,33cyclictest9128-21diskmemload22:19:122
169919910740,9cyclictest0-21swapper/023:48:220
169919910717,33cyclictest9903-21latency_hist21:27:480
169919910642,16cyclictest2913-21apt-key19:52:490
169919910638,9cyclictest0-21swapper/023:43:570
16991991063,40cyclictest1232-21lockfile-create22:07:450
16991991063,40cyclictest1232-21lockfile-create22:07:450
169919910633,12cyclictest0-21swapper/000:22:490
169919910633,12cyclictest0-21swapper/000:22:490
169919910547,51cyclictest0-21swapper/021:58:220
16991991054,43cyclictest19160-21fschecks_count19:02:580
16991991054,43cyclictest19160-21fschecks_count19:02:580
169919910539,9cyclictest0-21swapper/023:12:470
169919910442,15cyclictest11003-21fschecks_time22:23:070
169919910440,12cyclictest277-21dbus-daemon20:02:460
16991991034,39cyclictest352-21runrttasks23:28:310
16991991024,41cyclictest24874-21kworker/u17:0+xprtiod21:08:070
16991991024,41cyclictest24874-21kworker/u17:0+xprtiod21:08:070
16991991024,38cyclictest13870-21timerandwakeup21:33:200
170009910153,41cyclictest24120-21diskmemload21:18:021
170009910153,41cyclictest24120-21diskmemload21:18:021
16991991014,35cyclictest352-21runrttasks23:33:060
16991991014,33cyclictest3123-21/usr/sbin/munin19:53:410
16991991013,38cyclictest8431-21cut23:13:050
16991991013,38cyclictest8431-21cut23:13:050
16991991003,29cyclictest3758-21unixbench_singl23:58:220
16991991002,40cyclictest25500-21grep20:58:270
1699199995,35cyclictest25646-21/usr/sbin/munin19:23:170
16991999951,9cyclictest17789-21ssh21:40:220
1699199994,40cyclictest14137-21/usr/sbin/munin23:23:090
1699199993,37cyclictest352-21runrttasks23:18:420
17008999854,39cyclictest0-21swapper/223:52:562
17008999854,39cyclictest0-21swapper/223:52:562
1699199984,38cyclictest17610-21latency_hist20:37:490
16991999838,8cyclictest0-21swapper/022:58:420
16991999838,8cyclictest0-21swapper/022:58:420
1699199983,36cyclictest19038-21apt-key20:42:460
1699199964,39cyclictest1-21systemd19:32:460
1699199964,37cyclictest21657-21ntp_kernel_pll_20:48:130
1699199963,38cyclictest14258-21latency_hist20:27:470
17000999451,36cyclictest11509-21sh22:23:211
1699199934,37cyclictest26679-21unixbench_multi22:48:200
1700899923,80cyclictest0-21swapper/219:48:012
17000999242,44cyclictest0-21swapper/122:03:061
17000999242,44cyclictest0-21swapper/122:03:061
1700099923,43cyclictest22498-21latency_hist20:52:491
1699199922,40cyclictest15791-21ls20:32:450
276022910,7sleep20-21swapper/219:28:092
17008999070,13cyclictest352-21runrttasks20:43:332
17008999070,13cyclictest352-21runrttasks20:43:332
1700099903,38cyclictest1-21systemd22:50:171
1699199903,38cyclictest29866-21grep19:33:220
1699199903,38cyclictest23035-21grep19:13:170
1699199903,38cyclictest23035-21grep19:13:170
1699199903,36cyclictest352-21runrttasks22:41:340
17008998956,28cyclictest0-21swapper/221:17:452
17008998948,31cyclictest0-21swapper/222:28:032
1700899893,75cyclictest0-21swapper/218:58:012
1700099892,9cyclictest0-21swapper/119:27:591
1699199894,39cyclictest3708-21kworker/u17:1+xprtiod21:28:330
16991998932,20cyclictest29580-21kworker/u17:2+nfsiod22:11:260
17008998848,34cyclictest24120-21diskmemload22:46:412
17008998848,34cyclictest24120-21diskmemload22:46:412
17008998848,33cyclictest0-21swapper/223:48:162
17008998845,36cyclictest0-21swapper/223:17:452
17008998845,36cyclictest0-21swapper/223:17:452
17008998842,39cyclictest0-21swapper/220:12:472
17008998842,39cyclictest0-21swapper/220:12:472
17008998737,44cyclictest0-21swapper/200:13:112
17008998731,49cyclictest0-21swapper/222:08:592
17000998745,34cyclictest0-21swapper/119:57:451
1700099873,40cyclictest12138-21timerwakeupswit23:18:211
1700099872,33cyclictest6739-21ssh00:03:221
16991998770,10cyclictest25165-21sshd22:47:170
16991998770,10cyclictest25165-21sshd22:47:170
191892860,10sleep10-21swapper/121:43:081
191892860,10sleep10-21swapper/121:43:081
17008998639,36cyclictest0-21swapper/223:22:552
17000998642,36cyclictest0-21swapper/119:12:461
17000998642,36cyclictest0-21swapper/119:12:461
1700099863,37cyclictest2149-21ssh22:08:151
1700099863,30cyclictest29117-21/usr/sbin/munin23:48:251
77842850,7sleep10-21swapper/121:23:221
17008998528,34cyclictest0-21swapper/220:03:112
17000998542,36cyclictest0-21swapper/122:43:211
17000998542,36cyclictest0-21swapper/122:43:211
17000998541,37cyclictest0-21swapper/120:58:281
17000998539,39cyclictest0-21swapper/122:18:001
17000998533,13cyclictest181rcu_preempt23:47:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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