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2026-04-13 - 16:53
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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 rackaslot8.osadl.org (updated Mon Apr 13, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145662310280,20sleep20-21swapper/207:08:562
144342273241,21sleep10-21swapper/107:07:141
143552273242,20sleep00-21swapper/007:06:130
144312255224,20sleep30-21swapper/307:07:123
119502660,0sleep00-21swapper/011:30:170
258982590,0sleep20-21swapper/212:17:362
319222560,0sleep10-21swapper/112:20:511
67722520,0sleep30-21swapper/311:46:173
214362200,0sleep30-21swapper/310:56:483
285802190,0sleep30-21swapper/312:39:113
210882160,0sleep30-21swapper/309:58:263
129502150,0sleep00-21swapper/009:14:460
84642140,0sleep10-21swapper/110:10:141
228142140,0sleep30-21swapper/311:55:543
103042140,0sleep00-21swapper/010:30:230
75362130,0sleep00-21swapper/012:06:080
181242130,0sleep10-21swapper/110:15:231
39092120,3sleep228-21ksoftirqd/211:45:122
147879990,8cyclictest13489-21ssh10:32:453
147809996,2cyclictest22-21ksoftirqd/107:40:001
21192280,0sleep20-21swapper/211:15:532
20172280,0sleep30-21swapper/312:34:023
18460280,0sleep10-21swapper/109:17:351
147879985,2cyclictest658-21snmpd09:41:043
147879983,3cyclictest275-21systemd-journal10:27:123
147829981,1cyclictest141rcu_preempt08:50:132
147829980,7cyclictest0-21swapper/208:45:172
147809986,2cyclictest22-21ksoftirqd/111:45:001
147809983,3cyclictest275-21systemd-journal07:34:411
147769984,3cyclictest275-21systemd-journal10:18:470
147769984,3cyclictest275-21systemd-journal08:55:010
147769983,3cyclictest275-21systemd-journal11:24:240
14045280,0sleep10-21swapper/110:33:121
8616270,0sleep10-21swapper/111:47:441
5257270,0sleep20-21swapper/211:06:362
32546270,0sleep20-21swapper/211:23:222
18594270,0sleep30-21swapper/311:15:063
147879976,1cyclictest0-21swapper/309:23:353
147879975,2cyclictest658-21snmpd10:51:303
147879975,2cyclictest34-21ksoftirqd/308:50:013
147879974,1cyclictest275-21systemd-journal07:39:163
147879973,3cyclictest7955-11brltty11:08:583
147879973,3cyclictest658-21snmpd10:44:513
147879973,3cyclictest275-21systemd-journal12:20:363
147879973,3cyclictest275-21systemd-journal07:18:463
147879973,3cyclictest23033-21diskstats07:25:133
147879973,3cyclictest1478-21apt-get07:50:123
147879972,3cyclictest275-21systemd-journal09:05:013
147829976,1cyclictest28-21ksoftirqd/212:30:002
147829976,1cyclictest28-21ksoftirqd/210:45:012
147829974,2cyclictest501-21in:imuxsock09:20:192
147829973,3cyclictest658-21snmpd10:16:002
147829973,3cyclictest13990-21ntpq12:10:162
147829971,3cyclictest3970-21munin-run12:05:002
147809974,2cyclictest501-21in:imuxsock10:00:011
147809973,3cyclictest658-21snmpd11:21:071
147809973,3cyclictest32215-21ntpq09:45:181
147809973,3cyclictest275-21systemd-journal12:25:401
147809973,3cyclictest17956-21munin-run11:15:001
147809972,4cyclictest5361-21seq09:29:471
147809970,1cyclictest7758-21unixbench_multi09:30:201
147769976,1cyclictest0-21swapper/009:22:160
147769974,2cyclictest275-21systemd-journal07:24:360
147769973,3cyclictest658-21snmpd11:54:050
147769973,3cyclictest31676-21apt-get07:45:130
147769970,6cyclictest24468-11brltty10:23:020
32121260,0sleep10-21swapper/108:55:211
17807260,0sleep20-21swapper/210:35:172
147879966,0cyclictest0-21swapper/312:00:483
147879966,0cyclictest0-21swapper/308:15:013
147879964,1cyclictest504-21dbus-daemon09:45:213
147879964,1cyclictest5006-21diskmemload11:00:113
147879964,1cyclictest34-21ksoftirqd/308:25:013
147879963,2cyclictest7679-21ssh12:25:473
147879963,2cyclictest6991-21cat09:30:163
147879963,2cyclictest663-21runrttasks07:40:233
147879963,2cyclictest658-21snmpd11:30:523
147879963,2cyclictest658-21snmpd11:25:253
147879963,2cyclictest275-21systemd-journal09:50:363
147879963,2cyclictest275-21systemd-journal09:35:133
147879963,2cyclictest25835-21ntp_states07:30:163
147879963,2cyclictest23007-21ssh12:15:213
147879963,2cyclictest21451-21sshd09:19:543
147879963,2cyclictest15151-21expr07:10:133
147879963,1cyclictest0-21swapper/310:13:413
147879962,3cyclictest658-21snmpd11:54:173
147879962,3cyclictest658-21snmpd11:41:273
147879962,3cyclictest658-21snmpd10:46:063
147879962,3cyclictest658-21snmpd10:00:233
147879962,3cyclictest658-21snmpd09:06:333
147879962,3cyclictest658-21snmpd08:14:373
147879962,3cyclictest658-21snmpd08:05:013
147879962,3cyclictest504-21dbus-daemon11:20:063
147879962,2cyclictest275-21systemd-journal09:25:273
147879962,1cyclictest0-21swapper/312:05:083
147879962,1cyclictest0-21swapper/310:37:013
147879960,4cyclictest5006-21diskmemload12:10:163
147879960,3cyclictest11200-21ssh09:13:253
147879960,0cyclictest0-21swapper/311:10:173
147879960,0cyclictest0-21swapper/310:05:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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