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2026-08-06 - 16:04
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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 Thu Aug 06, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320302286255,21sleep10-21swapper/107:05:461
320462283252,21sleep20-21swapper/207:05:592
304032273221,15sleep00-21swapper/007:05:050
321892259226,22sleep30-21swapper/307:07:483
155162600,0sleep00-21swapper/010:23:380
233422200,0sleep20-21swapper/212:06:232
40742190,0sleep00-21swapper/012:34:480
79342180,0sleep30-21swapper/311:57:113
68472180,0sleep20-21swapper/209:19:412
180112170,0sleep20-21swapper/211:44:012
31092150,0sleep00-21swapper/011:54:520
197862150,0sleep00-21swapper/011:45:110
147762140,0sleep10-21swapper/111:02:231
95322130,0sleep20-21swapper/209:20:202
63172130,0sleep00-21swapper/010:37:310
33812130,0sleep30-21swapper/309:56:033
3248599134,2cyclictest28-21ksoftirqd/209:35:012
263242130,0sleep30-21swapper/310:10:163
299082120,0sleep20-21swapper/210:12:272
9466290,0chrt0-21swapper/311:19:193
12878290,3sleep334-21ksoftirqd/312:00:153
324859985,2cyclictest28-21ksoftirqd/208:05:012
324859983,3cyclictest13764-21basename08:50:012
324809982,2cyclictest17326-21awk10:25:011
324779987,1cyclictest12-21ksoftirqd/011:40:010
324779983,3cyclictest4852-21turbostat08:30:010
324779983,3cyclictest4852-21turbostat08:30:010
12464280,0sleep10-21swapper/109:42:021
8062270,3sleep228-21ksoftirqd/208:35:162
324899976,1cyclictest34-21ksoftirqd/312:10:013
324899975,1cyclictest34-21ksoftirqd/309:15:013
324899975,1cyclictest34-21ksoftirqd/308:05:013
324899975,1cyclictest34-21ksoftirqd/307:15:013
324899974,2cyclictest663-21runrttasks09:35:113
324899974,2cyclictest658-21snmpd11:20:463
324899974,2cyclictest504-21dbus-daemon10:20:013
324899974,2cyclictest34-21ksoftirqd/311:45:003
324899973,3cyclictest658-21snmpd09:14:573
324899973,3cyclictest3070-21diskstats07:15:013
324899973,3cyclictest275-21systemd-journal12:17:333
324899973,1cyclictest141rcu_preempt11:14:593
324899971,4cyclictest275-21systemd-journal08:20:023
324899970,5cyclictest17057-21kworker/3:112:35:493
324859976,1cyclictest28-21ksoftirqd/212:35:012
324859975,1cyclictest28-21ksoftirqd/210:35:012
324859974,2cyclictest275-21systemd-journal10:05:232
324859973,3cyclictest275-21systemd-journal12:15:452
324859973,3cyclictest275-21systemd-journal11:55:342
324859973,3cyclictest275-21systemd-journal10:58:162
324859973,3cyclictest14566-21grep08:50:142
324859973,3cyclictest11094-21cut10:40:172
324809974,2cyclictest275-21systemd-journal09:46:291
324809973,3cyclictest658-21snmpd08:35:051
324809973,3cyclictest4863-21ntpq11:55:181
324809973,1cyclictest0-21swapper/110:44:441
324809972,1cyclictest0-21swapper/109:50:191
324809971,3cyclictest11537-21apt08:45:011
324809970,1cyclictest9285-21ssh12:17:521
324779974,2cyclictest12592-21ntpq11:40:160
324779974,2cyclictest11936-21ls11:00:200
324779973,3cyclictest275-21systemd-journal08:35:010
324779973,3cyclictest275-21systemd-journal08:08:500
324779972,4cyclictest19866-21sshd10:25:370
324779972,3cyclictest30279-21munin-run08:15:010
324779972,3cyclictest16272-21dump-pmu-power09:45:010
19942270,1sleep132474-21cyclictest09:27:051
10435270,0chrt0-21swapper/012:38:200
8610260,1sleep38611-21fschecks_count07:25:153
8121260,0sleep10-21swapper/110:19:191
324899966,0cyclictest0-21swapper/311:47:143
324899966,0cyclictest0-21swapper/310:42:323
324899964,1cyclictest0-21swapper/308:00:013
324899963,2cyclictest9071-21ssh10:39:413
324899963,2cyclictest658-21snmpd08:56:573
324899963,2cyclictest658-21snmpd07:30:223
324899963,2cyclictest658-21snmpd07:21:153
324899963,2cyclictest560-21gdbus08:30:013
324899963,2cyclictest560-21gdbus08:30:013
324899963,2cyclictest32189-21sh12:11:523
324899963,2cyclictest26733-21cron11:30:003
324899963,2cyclictest2557-21ssh11:54:263
324899963,2cyclictest23215-21kworker/u8:109:20:123
324899963,2cyclictest22446-21sh10:08:043
324899963,2cyclictest18679-21tail07:45:203
324899963,2cyclictest14667-21sh12:20:393
324899963,2cyclictest11044-21sshd10:00:353
324899963,2cyclictest10023-21sh10:20:123
324899963,2cyclictest0-21swapper/311:00:143
324899962,3cyclictest658-21snmpd10:58:583
324899962,3cyclictest658-21snmpd10:45:133
324899962,3cyclictest658-21snmpd10:29:093
324899962,3cyclictest658-21snmpd09:53:053
324899962,3cyclictest658-21snmpd08:36:553
324899962,3cyclictest658-21snmpd07:40:273
324899962,3cyclictest3272-21cat11:35:113
324899962,3cyclictest24905-21cat09:30:143
324899962,3cyclictest20253-21unixbench_multi11:05:193
324899962,3cyclictest17620-21rm09:45:163
324899962,3cyclictest16693-21cat09:25:143
324899962,3cyclictest12186-21diskstats08:45:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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