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2026-07-25 - 15:41
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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 Sat Jul 25, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
115962284252,22sleep10-21swapper/107:07:351
115142271240,21sleep20-21swapper/207:06:322
117462262232,19sleep00-21swapper/007:09:310
116662255220,21sleep30-21swapper/307:08:303
197622660,0sleep20-21swapper/207:25:152
311972600,0sleep00-21swapper/011:05:030
232352600,0sleep00-21swapper/009:22:310
217852600,0sleep20-21swapper/210:59:252
201122590,0sleep10-21swapper/109:40:141
85532570,0sleep20-21swapper/210:50:362
255262570,0sleep00-21swapper/012:00:000
141922570,0sleep10-21swapper/112:31:381
240082540,0sleep30-21swapper/309:42:243
164332190,0sleep00-21swapper/007:15:190
91432180,0sleep30-21swapper/310:31:383
292952180,0sleep00-21swapper/010:25:000
230642180,0sleep00-21swapper/010:40:160
291432170,0sleep10-21swapper/109:25:401
323912160,0sleep10-21swapper/111:05:161
166502160,0sleep10-21swapper/112:14:071
243872110,1sleep10-21swapper/111:00:191
119159994,3cyclictest275-21systemd-journal12:22:283
9405280,1sleep09408-21latency_hist08:15:010
119159983,3cyclictest275-21systemd-journal09:16:383
119159980,7cyclictest29821-21ssh10:44:473
119119986,1cyclictest3169-21head12:25:152
119119980,1cyclictest658-21snmpd09:53:492
3391270,0sleep10-21swapper/112:05:221
28742270,0chrt0-21swapper/109:45:161
13905270,0sleep00-21swapper/011:13:530
119159973,3cyclictest658-21snmpd07:52:183
119159973,3cyclictest560-21gdbus11:20:003
119159973,3cyclictest275-21systemd-journal10:55:563
119159973,3cyclictest14183-11brltty11:48:273
119159972,3cyclictest304-21systemd-udevd12:08:363
119159970,7cyclictest0-21swapper/312:35:483
119119973,3cyclictest658-21snmpd09:47:552
119119973,3cyclictest275-21systemd-journal11:27:122
119119972,3cyclictest20549-21run-parts08:40:002
119119972,1cyclictest0-21swapper/210:03:242
119119971,3cyclictest11249-21/usr/sbin/munin12:30:142
119089974,2cyclictest19238-21grep09:20:141
119089972,1cyclictest141rcu_preempt09:15:121
119089970,4cyclictest6892-21idleruntime-cro08:10:011
119049976,1cyclictest0-21swapper/009:28:150
119049974,2cyclictest658-21snmpd09:36:460
119049974,2cyclictest27456-21sshd08:55:110
119049973,3cyclictest658-21snmpd08:27:580
119049973,3cyclictest658-21snmpd07:39:140
119049973,3cyclictest504-21dbus-daemon12:25:010
119049973,3cyclictest275-21systemd-journal10:27:110
119049973,3cyclictest2664-21sed09:10:160
119049970,7cyclictest8074-21ssh10:11:270
119049970,5cyclictest11887-21grep09:55:010
739260,0sleep00-21swapper/011:45:070
32750260,0sleep10-21swapper/112:23:441
119159966,0cyclictest0-21swapper/310:22:243
119159963,3cyclictest0-21swapper/312:11:303
119159963,2cyclictest8427-21sh09:33:183
119159963,2cyclictest658-21snmpd12:25:213
119159963,2cyclictest658-21snmpd09:20:093
119159963,2cyclictest4803-21ssh10:29:413
119159963,2cyclictest304-21systemd-udevd11:42:353
119159963,2cyclictest30002-21ssh11:23:283
119159963,2cyclictest29666-21smart_sda07:45:213
119159963,2cyclictest28128-21ssh09:45:113
119159963,2cyclictest27983-11brltty08:26:273
119159963,2cyclictest275-21systemd-journal08:03:553
119159963,2cyclictest21083-21sh11:56:473
119159963,2cyclictest20645-21sh11:37:013
119159963,2cyclictest19598-21mailstats12:15:183
119159963,2cyclictest14337-21taskset12:31:443
119159963,2cyclictest13794-21chrt08:24:083
119159963,1cyclictest0-21swapper/310:46:003
119159962,3cyclictest9940-21cat11:50:173
119159962,3cyclictest658-21snmpd11:09:473
119159962,3cyclictest658-21snmpd11:00:263
119159962,3cyclictest658-21snmpd10:10:093
119159962,3cyclictest658-21snmpd08:45:373
119159962,3cyclictest658-21snmpd08:40:083
119159962,3cyclictest658-21snmpd07:20:263
119159962,3cyclictest658-21snmpd07:19:473
119159962,3cyclictest32560-21cat09:05:163
119159962,3cyclictest29573-21tune2fs10:05:163
119159962,3cyclictest2785-21cat09:10:173
119159962,3cyclictest16633-21cat08:30:153
119159962,3cyclictest1-21systemd07:28:493
119159962,2cyclictest275-21systemd-journal07:38:003
119159962,1cyclictest0-21swapper/311:26:453
119159962,1cyclictest0-21swapper/310:50:203
119159962,1cyclictest0-21swapper/310:00:133
119159962,1cyclictest0-21swapper/309:55:063
119159961,3cyclictest275-21systemd-journal11:30:313
119159961,3cyclictest275-21systemd-journal07:10:533
119159960,5cyclictest504-21dbus-daemon08:20:003
119159960,3cyclictest19597-21rm10:38:183
119159960,2cyclictest13185-21/usr/sbin/munin10:15:133
119159960,0cyclictest0-21swapper/312:02:223
119159960,0cyclictest0-21swapper/309:50:323
119119966,0cyclictest0-21swapper/212:21:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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