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2025-10-24 - 14:39
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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 rack5slot2.osadl.org (updated Fri Oct 24, 2025 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
325992201186,10sleep10-21swapper/107:09:121
326662196179,12sleep00-21swapper/007:09:590
323652184167,12sleep30-21swapper/307:06:093
323242162144,13sleep20-21swapper/207:05:362
227692700,0sleep00-21swapper/010:59:260
187002440,0sleep318699-21apt-config07:45:003
185192440,0sleep20-21swapper/211:29:142
251292430,0sleep225132-21needreboot09:00:172
182992410,0sleep30-21swapper/311:12:583
37899103,3cyclictest9665-21perf11:25:000
37899102,4cyclictest28706-21munin-run08:05:000
3789993,3cyclictest27663-21munin-run11:50:000
3789982,3cyclictest26297-21munin-run09:25:010
3929970,6cyclictest13874-21/usr/sbin/munin07:35:183
3789960,3cyclictest20625-21basename12:35:000
3929955,0cyclictest11788-21kworker/3:112:13:473
3929955,0cyclictest11788-21kworker/3:111:28:593
3929955,0cyclictest11788-21kworker/3:111:06:363
3929955,0cyclictest11788-21kworker/3:108:07:283
3929955,0cyclictest11788-21kworker/3:107:56:163
3929955,0cyclictest11788-21kworker/3:107:11:323
3929951,3cyclictest9658-21sh10:52:343
3929950,5cyclictest3588-21pmu-power09:45:193
3929950,5cyclictest0-21swapper/312:37:033
3929950,5cyclictest0-21swapper/312:25:163
3929950,5cyclictest0-21swapper/309:57:533
3929950,0cyclictest0-21swapper/307:45:193
3889950,5cyclictest0-21swapper/211:54:052
3889950,5cyclictest0-21swapper/211:31:582
3889950,5cyclictest0-21swapper/211:08:592
3889950,5cyclictest0-21swapper/210:06:512
3889950,0cyclictest22196-21ssh09:22:292
3829950,5cyclictest0-21swapper/111:42:511
3829950,5cyclictest0-21swapper/111:22:031
3829950,5cyclictest0-21swapper/110:16:431
3829950,5cyclictest0-21swapper/110:16:421
3829950,5cyclictest0-21swapper/109:50:571
3829950,1cyclictest0-21swapper/111:16:051
3789955,0cyclictest20487-21kworker/0:010:15:110
3789955,0cyclictest20487-21kworker/0:010:15:110
3789955,0cyclictest0-21swapper/011:06:060
3789955,0cyclictest0-21swapper/010:52:000
3789951,2cyclictest0-21swapper/007:25:120
3789950,5cyclictest0-21swapper/010:28:430
3789950,1cyclictest6464-21diskstats11:55:160
3789950,0cyclictest1914-21sh11:36:310
3789950,0cyclictest0-21swapper/009:50:180
3929944,0cyclictest11788-21kworker/3:110:55:253
3929944,0cyclictest11788-21kworker/3:109:03:263
3929944,0cyclictest11788-21kworker/3:108:29:513
3929944,0cyclictest11788-21kworker/3:107:22:443
3929944,0cyclictest0-21swapper/311:32:103
3929944,0cyclictest0-21swapper/310:06:103
3929943,1cyclictest22091-21cut07:50:153
3929942,2cyclictest0-21swapper/310:27:083
3929942,1cyclictest714-21snmpd08:31:083
3929941,3cyclictest714-21snmpd11:00:343
3929941,3cyclictest11931-21fschecks_time12:30:153
3929941,3cyclictest0-21swapper/311:35:193
3929941,2cyclictest0-21swapper/312:20:143
3929941,2cyclictest0-21swapper/308:55:103
3929940,4cyclictest6199-21munin-run08:25:003
3929940,4cyclictest0-21swapper/312:17:093
3929940,4cyclictest0-21swapper/312:05:393
3929940,4cyclictest0-21swapper/312:01:323
3929940,4cyclictest0-21swapper/311:55:143
3929940,4cyclictest0-21swapper/311:40:123
3929940,4cyclictest0-21swapper/310:45:113
3929940,4cyclictest0-21swapper/310:14:273
3929940,4cyclictest0-21swapper/309:30:113
3929940,4cyclictest0-21swapper/309:10:123
3929940,3cyclictest8428-21/usr/sbin/munin09:15:213
3929940,3cyclictest7766-21/usr/sbin/munin10:20:163
3929940,3cyclictest30088-21cut10:15:123
3929940,3cyclictest30088-21cut10:15:123
3929940,3cyclictest28255-21apt-get11:50:153
3929940,3cyclictest22332-21/usr/sbin/munin11:15:163
3929940,3cyclictest2138-21users11:20:223
3929940,3cyclictest18109-21apt-get11:45:123
3929940,3cyclictest12710-21df_inode09:50:153
3929940,3cyclictest1224-21latency_hist08:15:003
3929940,3cyclictest12087-21df_inode08:35:143
3929940,3cyclictest0-21swapper/308:45:123
3929940,3cyclictest0-21swapper/307:30:003
3929940,2cyclictest0-21swapper/309:26:043
3929940,1cyclictest6097-21/usr/sbin/munin10:35:233
3929940,1cyclictest16788-21/usr/sbin/munin09:20:153
3929940,1cyclictest16188-21/usr/sbin/munin10:40:153
3929940,1cyclictest14054-21/usr/sbin/munin08:40:203
3929940,0cyclictest0-21swapper/310:32:313
3889944,0cyclictest0-21swapper/212:03:412
3889941,3cyclictest714-21snmpd11:56:432
3889941,3cyclictest20375-21ssh11:45:272
3889941,2cyclictest26170-21rm10:45:062
3889941,2cyclictest0-21swapper/208:10:122
3889941,1cyclictest0-21swapper/210:20:102
3889940,4cyclictest7805-21ssh10:51:252
3889940,4cyclictest61-21kswapd011:40:122
3889940,4cyclictest11386-21apt-get07:30:012
3889940,4cyclictest0-21swapper/212:36:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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