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2026-07-09 - 00:38
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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 Jul 08, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247282309283,17sleep10-21swapper/107:07:591
247042293266,18sleep20-21swapper/207:07:402
248052272241,20sleep00-21swapper/007:08:430
248772261228,22sleep30-21swapper/307:09:383
111862670,0sleep00-21swapper/011:42:190
180382610,0sleep10-21swapper/109:50:121
142312530,0sleep00-21swapper/010:06:530
325862400,0sleep30-21swapper/312:34:553
116422240,0sleep30-21swapper/309:26:193
31872210,1sleep03189-21missed_timers10:00:160
125722200,1sleep025003-21cyclictest12:22:110
85812190,0sleep20-21swapper/210:42:222
146992190,0sleep114700-21idleruntime-cro11:45:001
237592140,0sleep30-21swapper/311:10:423
94412130,0sleep30-21swapper/308:55:163
2500899129,2cyclictest12-21ksoftirqd/010:30:010
297772110,0sleep10-21swapper/112:13:151
2500899119,2cyclictest12-21ksoftirqd/008:40:000
2500899118,2cyclictest12-21ksoftirqd/008:00:000
2501999104,3cyclictest275-21systemd-journal12:19:123
2500899109,1cyclictest12-21ksoftirqd/012:30:000
2500899109,1cyclictest12-21ksoftirqd/011:55:000
2500899109,1cyclictest12-21ksoftirqd/011:25:010
2500899109,1cyclictest12-21ksoftirqd/008:15:000
2500899108,1cyclictest12-21ksoftirqd/009:05:000
2500899107,2cyclictest12-21ksoftirqd/011:00:010
250089998,1cyclictest12-21ksoftirqd/011:40:010
250089998,1cyclictest12-21ksoftirqd/009:20:010
250089998,1cyclictest12-21ksoftirqd/007:15:010
250089997,2cyclictest12-21ksoftirqd/011:10:010
250089997,1cyclictest12-21ksoftirqd/008:30:000
250089996,2cyclictest12-21ksoftirqd/011:20:010
250089996,2cyclictest12-21ksoftirqd/007:20:010
250199984,2cyclictest275-21systemd-journal07:42:123
250139984,2cyclictest275-21systemd-journal07:11:121
250089987,1cyclictest131rcuc/010:55:010
250089987,1cyclictest12-21ksoftirqd/010:00:010
250089987,1cyclictest12-21ksoftirqd/009:15:010
250089987,1cyclictest12-21ksoftirqd/009:10:000
250089987,1cyclictest12-21ksoftirqd/007:45:000
250089986,2cyclictest12-21ksoftirqd/012:39:590
250089986,2cyclictest12-21ksoftirqd/010:35:010
250089985,2cyclictest12-21ksoftirqd/008:25:000
250089983,3cyclictest30523-21ssh09:38:050
250089981,3cyclictest141rcu_preempt11:30:200
21827280,0sleep30-21swapper/309:32:473
6815270,0sleep30-21swapper/311:59:433
31010270,0sleep30-21swapper/309:38:283
27332270,0sleep20-21swapper/210:15:082
27123270,0sleep10-21swapper/110:34:331
250199973,3cyclictest658-21snmpd11:08:553
250179974,2cyclictest504-21dbus-daemon09:20:462
250179974,2cyclictest504-21dbus-daemon09:20:462
250179974,2cyclictest275-21systemd-journal10:06:182
250179974,2cyclictest19376-21cron10:34:562
250179972,3cyclictest275-21systemd-journal09:44:072
250179970,6cyclictest29849-21chrt07:17:532
250179970,3cyclictest65850snmpd09:46:332
250139973,3cyclictest658-21snmpd08:29:551
250139973,3cyclictest30544-21grep11:15:141
250139973,3cyclictest275-21systemd-journal07:35:581
250139973,3cyclictest1-21systemd08:35:191
250089976,1cyclictest12-21ksoftirqd/010:50:010
250089976,1cyclictest12-21ksoftirqd/010:15:010
250089976,1cyclictest12-21ksoftirqd/010:15:010
250089976,1cyclictest12-21ksoftirqd/009:35:010
250089975,1cyclictest12-21ksoftirqd/012:00:000
250089974,1cyclictest12-21ksoftirqd/012:05:190
250089973,3cyclictest658-21snmpd10:41:180
250089973,3cyclictest14844-21cat11:25:150
250089972,1cyclictest141rcu_preempt08:53:400
250089971,4cyclictest4755-21kworker/0:012:00:140
250089971,4cyclictest12-21ksoftirqd/009:50:010
18772270,0sleep10-21swapper/112:25:401
250199966,0cyclictest0-21swapper/312:10:593
250199966,0cyclictest0-21swapper/311:31:323
250199964,1cyclictest15199-21diskmemload10:50:103
250199963,3cyclictest4882-21apt-get07:35:123
250199963,2cyclictest9797-21rm12:00:373
250199963,2cyclictest658-21snmpd11:21:313
250199963,2cyclictest658-21snmpd10:21:263
250199963,2cyclictest658-21snmpd08:13:583
250199963,2cyclictest5036-21/usr/sbin/munin11:00:133
250199963,2cyclictest29563-21ssh11:53:403
250199963,2cyclictest275-21systemd-journal08:43:353
250199963,2cyclictest2648-21df10:00:133
250199963,2cyclictest23688-21cat08:15:133
250199963,2cyclictest20016-21ssh09:50:463
250199963,2cyclictest19241-21ssh10:49:083
250199963,2cyclictest18755-21cut08:05:123
250199963,2cyclictest18568-21ssh09:11:133
250199963,2cyclictest13230-21sh10:06:063
250199962,3cyclictest8015-21ls11:40:183
250199962,3cyclictest658-21snmpd11:45:023
250199962,3cyclictest658-21snmpd10:40:243
250199962,3cyclictest658-21snmpd09:58:293
250199962,3cyclictest658-21snmpd09:04:023
250199962,3cyclictest658-21snmpd08:23:403
250199962,3cyclictest658-21snmpd08:01:193
250199962,3cyclictest658-21snmpd07:28:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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