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2026-08-07 - 00:22
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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 376 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
324899960,6cyclictest0-21swapper/312:34:093
324899960,6cyclictest0-21swapper/310:30:443
324859966,0cyclictest0-21swapper/210:35:292
324859966,0cyclictest0-21swapper/209:10:332
324859966,0cyclictest0-21swapper/209:05:012
324859965,1cyclictest28-21ksoftirqd/208:35:012
324859963,2cyclictest658-21snmpd09:44:562
324859963,2cyclictest658-21snmpd09:31:162
324859963,2cyclictest658-21snmpd08:12:382
324859963,2cyclictest504-21dbus-daemon07:15:072
324859963,2cyclictest29592-21ssh11:30:492
324859963,2cyclictest26316-21ssh09:50:182
324859963,2cyclictest26090-21apt08:05:112
324859963,2cyclictest13231-21sh10:21:512
324859963,1cyclictest28-21ksoftirqd/211:14:552
324859962,3cyclictest658-21snmpd12:11:262
324859962,3cyclictest658-21snmpd08:40:052
324859962,3cyclictest658-21snmpd08:24:372
324859962,3cyclictest658-21snmpd07:47:072
324859962,3cyclictest30644-21seq11:51:032
324859962,3cyclictest275-21systemd-journal12:35:292
324859962,3cyclictest19437-21cat09:00:142
324859962,3cyclictest13241-21cat12:20:132
324859962,1cyclictest0-21swapper/211:45:482
324859962,1cyclictest0-21swapper/211:26:582
324859962,1cyclictest0-21swapper/211:05:162
324859962,1cyclictest0-21swapper/210:25:062
324859960,6cyclictest0-21swapper/211:18:182
324859960,6cyclictest0-21swapper/210:51:502
324859960,6cyclictest0-21swapper/209:49:322
324859960,2cyclictest8184-21/usr/sbin/munin07:25:212
324859960,2cyclictest3271-21diskstats08:25:122
324859960,2cyclictest3271-21diskstats08:25:112
324859960,1cyclictest141rcu_preempt11:35:102
324859960,0cyclictest0-21swapper/212:00:532
324859960,0cyclictest0-21swapper/211:01:052
324809966,0cyclictest0-21swapper/110:09:241
324809964,2cyclictest501-21in:imuxsock10:35:251
324809963,2cyclictest9146-21rm11:38:441
324809963,2cyclictest663-21runrttasks11:07:061
324809963,2cyclictest658-21snmpd12:01:111
324809963,2cyclictest658-21snmpd10:27:361
324809963,2cyclictest504-21dbus-daemon07:20:181
324809963,2cyclictest4683-21ssh12:35:041
324809963,2cyclictest32632-21latency_hist08:20:011
324809963,2cyclictest32521-21ssh09:35:041
324809963,2cyclictest31168-21cron09:14:591
324809963,2cyclictest30120-21ssh11:31:141
324809963,2cyclictest29162-21sh09:32:511
324809963,2cyclictest28928-21sh11:10:361
324809963,2cyclictest275-21systemd-journal08:45:231
324809963,2cyclictest275-21systemd-journal08:30:011
324809963,2cyclictest275-21systemd-journal08:30:011
324809963,2cyclictest275-21systemd-journal07:53:501
324809963,2cyclictest25323-21rm10:10:071
324809963,2cyclictest24125-21expr08:00:131
324809963,2cyclictest21358-21grep11:45:181
324809963,2cyclictest18517-21expr10:45:121
324809963,2cyclictest18191-21sh11:44:071
324809963,2cyclictest1006-21ssh12:12:511
324809963,1cyclictest0-21swapper/110:59:201
324809963,1cyclictest0-21swapper/110:30:021
324809962,3cyclictest658-21snmpd12:30:571
324809962,3cyclictest658-21snmpd12:05:111
324809962,3cyclictest658-21snmpd09:09:271
324809962,3cyclictest658-21snmpd08:55:181
324809962,3cyclictest658-21snmpd08:34:141
324809962,3cyclictest658-21snmpd07:57:191
324809962,3cyclictest658-21snmpd07:35:551
324809962,3cyclictest658-21snmpd07:19:451
324809962,3cyclictest658-21snmpd07:13:001
324809962,3cyclictest14517-21perl08:50:141
324809962,1cyclictest0-21swapper/111:52:291
324809960,6cyclictest0-21swapper/111:23:011
324809960,6cyclictest0-21swapper/109:17:121
324809960,4cyclictest10350-21cron11:20:001
324809960,0cyclictest0-21swapper/109:21:391
324779963,2cyclictest663-21runrttasks11:06:350
324779963,2cyclictest658-21snmpd12:10:380
324779963,2cyclictest24912-21ssh12:07:370
324779963,2cyclictest22383-21ssh10:08:000
324779963,2cyclictest21693-21ssh10:46:440
324779963,2cyclictest1977-21wc09:55:190
324779963,2cyclictest1875-21sensors_temp08:20:190
324779963,2cyclictest0-21swapper/011:24:010
324779963,1cyclictest0-21swapper/010:00:520
324779962,3cyclictest658-21snmpd12:21:510
324779962,3cyclictest658-21snmpd12:00:290
324779962,3cyclictest658-21snmpd11:17:070
324779962,3cyclictest658-21snmpd10:19:570
324779962,3cyclictest658-21snmpd09:15:090
324779962,3cyclictest658-21snmpd09:03:120
324779962,3cyclictest658-21snmpd08:50:300
324779962,3cyclictest658-21snmpd08:37:110
324779962,3cyclictest658-21snmpd07:53:520
324779962,3cyclictest658-21snmpd07:25:370
324779962,3cyclictest504-21dbus-daemon08:05:000
324779962,3cyclictest32263-21readlink09:35:000
324779962,3cyclictest275-21systemd-journal08:45:360
324779962,3cyclictest26179-21cat10:10:150
324779962,3cyclictest25781-21date09:50:140
324779962,3cyclictest16551-21cat08:55:110
324779962,3cyclictest10449-21ssh09:21:030
324779962,3cyclictest10299-21cat10:40:130
324779962,3cyclictest0-21swapper/010:56:300
324779962,2cyclictest275-21systemd-journal07:21:340
324779962,1cyclictest0-21swapper/010:50:030
324779960,6cyclictest0-21swapper/011:12:190
324779960,3cyclictest20212-21rm09:27:170
324779960,2cyclictest17183-21/usr/sbin/munin07:45:190
27445260,0sleep30-21swapper/311:30:123
14449260,0sleep20-21swapper/210:03:142
324899953,1cyclictest12801-21tr07:35:093
324899952,2cyclictest658-21snmpd08:50:033
324899952,2cyclictest658-21snmpd08:15:143
324899952,2cyclictest4828-21cron08:30:013
324899952,2cyclictest28540-21expr08:10:133
324899952,2cyclictest27237-21wc08:05:183
324899952,2cyclictest21656-21cat09:05:153
324899952,2cyclictest19101-21expr09:00:123
324899951,3cyclictest9559-21/usr/sbin/munin08:40:123
324899951,3cyclictest8523-21ssh09:40:113
324899950,4cyclictest20792-21cat07:50:213
324899950,1cyclictest141rcu_preempt10:50:113
324899950,0cyclictest0-21swapper/312:25:083
324859953,1cyclictest5824-21tr07:20:122
324859953,1cyclictest22275-21sh12:25:192
324859953,1cyclictest17202-21open_files08:55:162
324859952,2cyclictest658-21snmpd09:55:232
324859952,2cyclictest658-21snmpd07:50:132
324859952,2cyclictest319-21readlink07:10:012
324859952,2cyclictest275-21systemd-journal08:15:142
324859952,2cyclictest275-21systemd-journal07:55:092
324859952,2cyclictest18745-21tail10:45:142
324859952,2cyclictest15838-21ssh09:25:062
324859952,2cyclictest10837-21sh11:20:112
324859952,2cyclictest10395-21chrt07:30:012
324859951,3cyclictest275-21systemd-journal07:40:052
324859951,3cyclictest0-21swapper/210:15:062
324859950,4cyclictest12622-21/usr/sbin/munin07:35:162
324809953,1cyclictest7978-21apt-config07:25:011
324809952,2cyclictest658-21snmpd10:00:141
324809952,2cyclictest658-21snmpd07:48:131
324809952,2cyclictest658-21snmpd07:40:131
324809952,2cyclictest28816-21fw_packets08:10:131
324809952,2cyclictest28034-21sshd08:10:001
324809952,2cyclictest19193-21cut09:00:131
324809952,2cyclictest18826-21ssh11:25:031
324809952,2cyclictest11043-21cat07:30:141
324809952,1cyclictest0-21swapper/112:25:021
324809951,3cyclictest731-21/usr/sbin/munin09:55:131
324809951,3cyclictest2657-21cat08:25:011
324809951,3cyclictest13146-21/usr/sbin/munin12:20:131
324809950,4cyclictest26125-21ssh10:50:001
324779953,1cyclictest22027-21df_inode07:55:130
324779952,2cyclictest658-21snmpd09:05:030
324779952,2cyclictest658-21snmpd08:19:230
324779952,2cyclictest4757-21cut12:15:110
324779952,2cyclictest275-21systemd-journal08:40:100
324779952,2cyclictest27020-21ssh11:30:020
324779952,2cyclictest26178-21cut10:30:130
324779952,2cyclictest24400-21expr09:30:120
324779952,2cyclictest20652-21rm12:25:060
324779952,2cyclictest19281-21cat11:25:110
324779952,2cyclictest14297-21taskset07:36:280
324779952,2cyclictest11791-21expr07:30:190
324779952,1cyclictest0-21swapper/011:55:030
324779951,3cyclictest494-21packagekitd07:10:010
324779951,3cyclictest16702-21/usr/sbin/munin09:45:120
324779950,3cyclictest275-21systemd-journal07:15:180
324779950,1cyclictest23407-21/usr/sbin/munin09:10:120
324779940,3cyclictest14986-21/usr/sbin/munin07:40:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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