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2026-05-21 - 01:36
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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 20, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262522278248,20sleep20-21swapper/207:07:292
263612273244,17sleep30-21swapper/307:08:383
263432263233,19sleep00-21swapper/007:08:230
263442258231,18sleep10-21swapper/107:08:241
71322620,0sleep00-21swapper/012:20:110
262822620,0sleep30-21swapper/312:31:073
11632610,0sleep00-21swapper/012:15:590
146812580,0sleep30-21swapper/312:05:133
176872560,0sleep10-21swapper/110:29:131
56072550,0sleep00-21swapper/008:45:120
294202550,0sleep10-21swapper/112:33:331
282592550,0sleep20-21swapper/211:34:312
51392530,0sleep00-21swapper/011:00:180
63612210,0sleep20-21swapper/209:42:322
301802190,0sleep30-21swapper/310:16:293
18612190,0sleep10-21swapper/112:16:311
150612190,0sleep30-21swapper/310:27:103
41352180,0sleep30-21swapper/310:00:243
176532180,0sleep00-21swapper/010:09:340
55982170,0sleep00-21swapper/010:21:110
86712160,0sleep10-21swapper/111:02:361
121782160,0sleep10-21swapper/109:45:401
314512150,0sleep30-21swapper/309:57:513
167752150,0sleep20-21swapper/210:47:522
127552140,0sleep10-21swapper/109:26:291
44352130,0sleep00-21swapper/012:37:570
265749990,8cyclictest10058-21gltestperf09:25:123
6690280,0sleep30-21swapper/308:45:183
265749985,2cyclictest34-21ksoftirqd/312:20:003
265709982,3cyclictest549-21grep08:35:002
265639984,3cyclictest275-21systemd-journal10:41:110
265639984,3cyclictest275-21systemd-journal08:32:230
265639980,2cyclictest14190-21ssh11:45:130
22318280,0sleep30-21swapper/309:12:583
265749974,2cyclictest10571-21sshd11:23:353
265749973,3cyclictest275-21systemd-journal07:27:453
265709975,1cyclictest20632-21munin-plugin-st11:30:002
265709974,2cyclictest9451-21cron08:55:012
265709973,3cyclictest6232-21ntpq08:45:162
265709973,3cyclictest275-21systemd-journal09:58:312
265709973,2cyclictest275-21systemd-journal12:13:442
265709971,3cyclictest24064-21munin-run08:15:012
265709970,4cyclictest18266-21perf10:10:012
265709970,4cyclictest12978-21perf11:45:002
265689973,3cyclictest658-21snmpd08:59:311
265689973,3cyclictest0-21swapper/109:19:501
265689973,1cyclictest0-21swapper/111:50:331
265639975,1cyclictest12-21ksoftirqd/011:25:000
265639974,2cyclictest504-21dbus-daemon08:55:030
265639973,3cyclictest658-21snmpd07:28:440
265639973,3cyclictest658-21snmpd07:12:030
265639973,3cyclictest275-21systemd-journal08:15:010
20949270,0chrt0-21swapper/209:31:272
18324270,0sleep20-21swapper/212:07:082
265749966,0cyclictest0-21swapper/312:01:143
265749966,0cyclictest0-21swapper/311:46:543
265749966,0cyclictest0-21swapper/310:35:503
265749966,0cyclictest0-21swapper/308:50:203
265749966,0cyclictest0-21swapper/307:50:183
265749963,2cyclictest8389-21sh11:02:233
265749963,2cyclictest7724-21ssh10:42:263
265749963,2cyclictest504-21dbus-daemon08:00:013
265749963,2cyclictest504-21dbus-daemon07:38:103
265749963,2cyclictest34-21ksoftirqd/307:10:143
265749963,2cyclictest31727-21sh09:38:263
265749963,2cyclictest29205-21fschecks_count08:25:153
265749963,2cyclictest275-21systemd-journal12:39:103
265749963,2cyclictest275-21systemd-journal12:28:443
265749963,2cyclictest25265-21ssh11:51:303
265749963,2cyclictest23540-21grep12:10:173
265749963,1cyclictest0-21swapper/310:10:563
265749962,3cyclictest658-21snmpd11:18:063
265749962,3cyclictest658-21snmpd11:10:093
265749962,3cyclictest658-21snmpd10:54:383
265749962,3cyclictest658-21snmpd09:47:183
265749962,3cyclictest658-21snmpd09:40:343
265749962,3cyclictest658-21snmpd08:43:033
265749962,3cyclictest658-21snmpd08:34:423
265749962,3cyclictest658-21snmpd08:00:473
265749962,3cyclictest275-21systemd-journal11:55:193
265749962,3cyclictest2362-21cut09:20:163
265749962,3cyclictest13190-21ntpq09:00:183
265749962,3cyclictest12857-21expr11:05:153
265749962,3cyclictest12195-21cat09:00:013
265749962,3cyclictest12027-21ls10:45:113
265749962,3cyclictest11156-21which10:05:133
265749962,1cyclictest141rcu_preempt11:30:123
265749962,1cyclictest0-21swapper/310:33:173
265749961,3cyclictest275-21systemd-journal10:21:523
265749960,6cyclictest0-21swapper/311:36:203
265749960,6cyclictest0-21swapper/309:15:063
265749960,5cyclictest5131-21cat07:30:183
265749960,3cyclictest10883-21rm12:22:093
265749960,2cyclictest5153-21/usr/sbin/munin11:40:123
265749960,2cyclictest11635-21ntp_states07:45:183
265749960,0cyclictest0-21swapper/310:59:033
265709966,0cyclictest0-21swapper/208:20:202
265709964,1cyclictest26313-21tr08:20:012
265709963,2cyclictest9596-21sendmail_mailst07:40:182
265709963,2cyclictest7801-21sshd10:03:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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