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2026-05-06 - 18:53
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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 Wed May 06, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271732298267,20sleep20-21swapper/207:08:432
270772268237,20sleep00-21swapper/007:07:430
269412266234,22sleep30-21swapper/307:05:583
271892264233,21sleep10-21swapper/107:08:531
172042560,0sleep30-21swapper/310:27:393
315212540,0sleep10-21swapper/110:35:551
232602540,0sleep00-21swapper/010:30:560
325602150,0sleep10-21swapper/111:15:181
206852150,0sleep00-21swapper/011:27:510
201372150,0sleep20-21swapper/209:30:232
200622140,0sleep00-21swapper/011:08:240
180702120,0sleep20-21swapper/210:47:452
273849992,4cyclictest17969-21perf08:00:020
29651280,0sleep00-21swapper/011:52:330
273969982,1cyclictest13579-21apt-get11:05:023
273929983,3cyclictest275-21systemd-journal10:18:402
273889984,3cyclictest275-21systemd-journal09:20:001
273849984,3cyclictest5234-21ntpq10:20:180
273849984,3cyclictest504-21dbus-daemon12:40:000
273849983,3cyclictest275-21systemd-journal07:11:140
2323280,0sleep30-21swapper/310:57:473
21860280,0sleep30-21swapper/311:28:453
14977280,0sleep30-21swapper/307:50:193
14082280,0sleep20-21swapper/209:46:342
1289280,1sleep00-21swapper/011:15:540
9625270,0sleep20-21swapper/207:40:132
28389270,0sleep00-21swapper/011:32:230
273969974,2cyclictest11187-11brltty08:05:293
273969974,2cyclictest11187-11brltty08:05:293
273969973,3cyclictest663-21runrttasks10:22:223
273969973,3cyclictest658-21snmpd12:02:553
273969973,3cyclictest658-21snmpd11:20:003
273969973,3cyclictest504-21dbus-daemon11:25:003
273969973,3cyclictest2770-21ntpq09:20:163
273929975,1cyclictest0-21swapper/209:12:042
273929973,3cyclictest658-21snmpd12:02:262
273929973,3cyclictest275-21systemd-journal11:34:002
273929973,1cyclictest0-21swapper/211:00:112
273889976,1cyclictest17020-21diskmemload10:25:031
273889973,3cyclictest658-21snmpd08:22:461
273889973,3cyclictest504-21dbus-daemon10:55:001
273889973,3cyclictest275-21systemd-journal11:30:571
273889973,3cyclictest275-21systemd-journal07:15:001
273849976,1cyclictest12-21ksoftirqd/007:50:000
273849974,3cyclictest12-21ksoftirqd/010:45:000
273849974,2cyclictest504-21dbus-daemon09:20:370
273849973,3cyclictest658-21snmpd11:02:150
273849973,3cyclictest658-21snmpd09:18:350
273849972,4cyclictest275-21systemd-journal09:03:300
273849972,3cyclictest20200-21munin-run08:05:020
273849970,1cyclictest11126-21ssh11:21:510
17515270,0chrt0-21swapper/312:05:103
27894260,1sleep00-21swapper/012:30:170
273969966,0cyclictest0-21swapper/312:21:253
273969966,0cyclictest0-21swapper/312:10:283
273969966,0cyclictest0-21swapper/311:53:583
273969966,0cyclictest0-21swapper/310:32:473
273969966,0cyclictest0-21swapper/310:15:353
273969964,1cyclictest34-21ksoftirqd/309:00:003
273969964,1cyclictest34-21ksoftirqd/307:15:013
273969963,2cyclictest658-21snmpd10:50:483
273969963,2cyclictest658-21snmpd08:14:223
273969963,2cyclictest578-21df11:35:133
273969963,2cyclictest504-21dbus-daemon11:00:523
273969963,2cyclictest4858-21ssh12:35:473
273969963,2cyclictest3291-21ssh09:40:133
273969963,2cyclictest32173-21hddtemp_smartct08:30:143
273969963,2cyclictest275-21systemd-journal07:55:013
273969963,2cyclictest25630-21sh09:15:043
273969963,2cyclictest25206-21rm09:14:553
273969963,2cyclictest24911-21sh11:10:453
273969963,2cyclictest19316-21ssh09:50:113
273969963,2cyclictest18884-21ssh10:48:223
273969963,2cyclictest13985-21mailstats09:00:183
273969963,2cyclictest1259-21expr11:55:113
273969963,2cyclictest12441-21sh09:25:513
273969962,3cyclictest658-21snmpd10:37:203
273969962,3cyclictest658-21snmpd10:14:213
273969962,3cyclictest658-21snmpd10:05:263
273969962,3cyclictest658-21snmpd08:38:433
273969962,3cyclictest658-21snmpd07:25:483
273969962,3cyclictest3422-21grep10:00:113
273969962,3cyclictest3422-21grep10:00:113
273969962,3cyclictest27960-21tune2fs09:55:143
273969962,3cyclictest25039-21grep08:15:133
273969962,1cyclictest0-21swapper/311:40:263
273969960,6cyclictest0-21swapper/309:38:033
273969960,5cyclictest10032-21munin-run08:55:003
273969960,0cyclictest0-21swapper/311:45:333
273929966,0cyclictest0-21swapper/211:47:572
273929963,2cyclictest658-21snmpd10:39:412
273929963,2cyclictest6217-21ssh10:01:102
273929963,2cyclictest6217-21ssh10:01:102
273929963,2cyclictest5970-21sh11:57:522
273929963,2cyclictest5501-21sh12:16:502
273929963,2cyclictest454-21ssh09:38:532
273929963,2cyclictest3564-21awk12:35:162
273929963,2cyclictest31046-21ssh12:12:572
273929963,2cyclictest275-21systemd-journal07:47:452
273929963,2cyclictest26305-21rm10:33:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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