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2026-07-29 - 09:02
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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 Wed Jul 29, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31665215713,94sleep231712-21cstates18:51:212
640991202,33cyclictest25505-21mailstats23:11:370
640991183,37cyclictest26604-21latency_hist22:21:060
6409911440,11cyclictest0-21swapper/019:26:390
640991142,43cyclictest1401-21cmp23:26:070
640991142,43cyclictest1401-21cmp23:26:070
2734821130,7sleep1618-21cyclictest20:16:251
6509911132,33cyclictest181rcu_preempt23:06:501
6409911139,19cyclictest31007-21grep22:26:400
640991103,39cyclictest28471-21/usr/sbin/munin00:11:290
640991103,39cyclictest28471-21/usr/sbin/munin00:11:290
3273721106,15sleep00-21swapper/018:53:270
6409910936,11cyclictest0-21swapper/023:41:060
6409910936,11cyclictest0-21swapper/023:41:060
6409910915,11cyclictest0-21swapper/021:26:390
640991073,31cyclictest16859-21ssh21:11:040
640991073,26cyclictest7986-21fschecks_time19:16:250
6409910642,14cyclictest31465-21/usr/sbin/munin00:16:240
6409910638,9cyclictest0-21swapper/023:55:260
6409910638,9cyclictest0-21swapper/023:55:260
640991063,38cyclictest11613-21modprobe21:56:030
640991063,38cyclictest11613-21modprobe21:56:030
640991063,29cyclictest14184-21/usr/sbin/munin23:46:360
6409910539,16cyclictest21823-21timerandwakeup22:11:370
640991053,39cyclictest2958-21/usr/sbin/munin20:42:440
640991053,37cyclictest20945-21tune2fs19:56:260
6409910533,12cyclictest0-21swapper/021:46:370
6409910516,34cyclictest28294-21sshd23:16:310
650991044,71cyclictest1854-21df23:26:471
650991044,71cyclictest1854-21df23:26:471
640991044,37cyclictest1671-21runrttasks21:38:300
6409910433,11cyclictest0-21swapper/000:10:080
6409910417,33cyclictest15558-21munin-run19:41:040
6409910417,33cyclictest15558-21munin-run19:41:040
6409910334,9cyclictest0-21swapper/020:57:030
640991033,44cyclictest11788-21/usr/sbin/munin21:01:380
640991033,38cyclictest12776-21fschecks_count22:51:270
640991033,37cyclictest6768-21grep19:11:370
640991033,33cyclictest5782-21latency_hist21:46:070
640991033,24cyclictest22188-21cpuspeed23:07:180
3263721035,14sleep10-21swapper/118:52:101
6409910237,12cyclictest352-21runrttasks18:56:410
6409910237,12cyclictest352-21runrttasks18:56:410
640991023,36cyclictest1417-21fschecks_time20:36:330
640991023,36cyclictest1417-21fschecks_time20:36:330
640991023,34cyclictest352-21runrttasks21:16:140
640991023,33cyclictest21496-21gpgv23:06:060
6409910220,28cyclictest3600-21switchtime19:01:410
2455221020,7sleep30-21swapper/323:11:053
640991013,40cyclictest352-21runrttasks22:06:560
640991003,37cyclictest947-21grep20:36:050
640991003,22cyclictest4431-21latency_hist23:31:110
640991003,22cyclictest4431-21latency_hist23:31:110
64099995,32cyclictest27369-21fschecks_time20:16:260
64099994,35cyclictest17375-21fschecks_count21:11:250
640999923,27cyclictest14056-21latency_hist19:36:060
64099992,25cyclictest7992-21cmp20:56:080
64099992,24cyclictest3184-21munin-plugin-st22:36:030
64099992,24cyclictest3184-21munin-plugin-st22:36:030
64099983,36cyclictest12051-21cstates21:56:200
64099983,35cyclictest29968-21fschecks_count21:32:240
64099983,33cyclictest10839-21latency_hist19:26:060
64099982,39cyclictest17155-21latency_hist19:46:060
64099982,35cyclictest5972-21basename20:51:030
657999768,20cyclictest15171-21unixbench_singl19:36:412
657999768,20cyclictest15171-21unixbench_singl19:36:412
64099964,34cyclictest6103-21latency_hist19:11:070
64099962,44cyclictest4639-21cstates23:31:230
64099953,35cyclictest17644-21fschecks_count19:46:230
200072950,6sleep30-21swapper/322:09:213
64099944,39cyclictest20405-21sh19:56:030
650999165,8cyclictest181rcu_preempt19:31:231
64099913,34cyclictest28714-21/usr/sbin/munin20:21:240
664999020,27cyclictest0-21swapper/323:26:203
664999020,27cyclictest0-21swapper/323:26:203
657999059,22cyclictest5313-21switchtime23:31:402
650998965,8cyclictest181rcu_preempt22:30:531
65799876,68cyclictest21760-21apt-get23:06:232
650998749,7cyclictest181rcu_preempt21:01:051
290902870,17sleep2371rcuc/221:31:062
657998615,60cyclictest28815-21apt-get21:32:012
650998665,15cyclictest2509-21sh20:41:041
650998665,15cyclictest2509-21sh20:41:041
650998541,12cyclictest181rcu_preempt20:01:291
650998541,11cyclictest23497-21ssh00:01:421
650998469,8cyclictest0-21swapper/122:41:261
650998469,8cyclictest0-21swapper/122:41:261
650998442,12cyclictest0-21swapper/122:25:031
650998438,11cyclictest0-21swapper/122:01:351
650998438,11cyclictest0-21swapper/122:01:351
650998437,9cyclictest181rcu_preempt23:46:241
657998360,16cyclictest25444-21latency_hist00:06:072
650998336,16cyclictest0-21swapper/119:01:441
65099832,42cyclictest31-21ksoftirqd/121:35:431
657998263,13cyclictest462-21/usr/sbin/munin22:31:402
657998263,13cyclictest462-21/usr/sbin/munin22:31:402
657998260,15cyclictest618-21cyclictest23:56:182
657998256,19cyclictest1257-21apt-key23:26:062
657998256,19cyclictest1257-21apt-key23:26:062
650998252,11cyclictest181rcu_preempt21:57:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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