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2026-04-21 - 22:06
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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 Tue Apr 21, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32652310281,19sleep20-21swapper/207:07:022
34002291233,48sleep10-21swapper/107:08:461
32352277224,43sleep30-21swapper/307:06:393
34972270239,20sleep00-21swapper/007:09:450
14582670,0sleep00-21swapper/010:13:520
205042630,0sleep30-21swapper/309:45:203
138622630,1sleep313869-21timerwakeupswit11:00:203
216922590,0sleep20-21swapper/212:24:552
209372590,0sleep10-21swapper/108:55:201
46472570,0sleep00-21swapper/011:34:560
269212550,0sleep30-21swapper/308:00:003
257982540,0sleep10-21swapper/109:29:391
41412530,0sleep10-21swapper/111:34:331
312552530,0sleep20-21swapper/210:11:492
284402530,0sleep30-21swapper/312:28:483
176222510,0sleep10-21swapper/112:02:001
66442160,0sleep20-21swapper/212:15:142
75442150,0sleep30-21swapper/312:15:203
139872130,0sleep10-21swapper/112:20:051
324112120,4sleep122-21ksoftirqd/112:10:451
249822120,0sleep20-21swapper/212:06:212
223572120,0sleep20-21swapper/210:06:172
36189996,2cyclictest658-21snmpd11:18:250
14085290,0sleep10-21swapper/111:00:211
36309985,2cyclictest658-21snmpd09:33:033
36309983,3cyclictest674-21lldpd07:22:103
36309983,3cyclictest275-21systemd-journal11:44:233
36279986,2cyclictest28-21ksoftirqd/207:30:002
36279986,1cyclictest12226-21sh11:19:472
36239986,2cyclictest22-21ksoftirqd/110:20:011
36189980,2cyclictest26436-21sed09:30:010
28031280,0sleep00-21swapper/012:28:290
26320280,0sleep00-21swapper/012:07:230
18114280,0sleep30-21swapper/311:22:583
36309976,1cyclictest27297-21apt-get09:50:123
36309974,2cyclictest13973-21sshd12:39:453
36309973,3cyclictest275-21systemd-journal12:34:593
36309973,3cyclictest275-21systemd-journal09:16:343
36309973,3cyclictest1-21systemd09:39:593
36309973,1cyclictest0-21swapper/309:57:323
36309970,7cyclictest26740-21ssh10:09:413
36279973,3cyclictest275-21systemd-journal10:26:162
36239973,4cyclictest28957-21awk11:30:001
36239973,3cyclictest27733-21sshd12:28:151
36239970,0cyclictest0-21swapper/111:38:071
36189974,2cyclictest3803-21cat09:55:160
36189974,2cyclictest275-21systemd-journal10:34:330
36189973,3cyclictest504-21dbus-daemon10:10:010
36189973,3cyclictest504-21dbus-daemon09:15:000
36189973,3cyclictest275-21systemd-journal10:59:560
36189973,3cyclictest275-21systemd-journal10:59:560
36189973,3cyclictest16002-21ntpq08:45:150
36189973,2cyclictest275-21systemd-journal07:29:560
36189972,3cyclictest5475-21turbostat12:15:000
36189972,3cyclictest27781-21ls10:50:010
30379270,0sleep10-21swapper/111:50:141
17692270,0sleep30-21swapper/308:50:133
10730270,0sleep30-21swapper/310:39:293
36309966,0cyclictest0-21swapper/311:50:433
36309964,1cyclictest50850irq/136-enp4s0-12:05:123
36309963,2cyclictest949-21sh11:32:043
36309963,2cyclictest9076-21ssh10:57:523
36309963,2cyclictest9076-21ssh10:57:523
36309963,2cyclictest7901-21ssh11:55:473
36309963,2cyclictest658-21snmpd10:45:063
36309963,2cyclictest6482-21ssh10:16:233
36309963,2cyclictest504-21dbus-daemon07:27:073
36309963,2cyclictest504-21dbus-daemon07:20:013
36309963,2cyclictest4798-21ntp_states07:10:173
36309963,2cyclictest275-21systemd-journal08:30:013
36309963,2cyclictest23487-21sh11:25:453
36309963,2cyclictest23313-21ls07:50:143
36309963,2cyclictest2137-21seq10:14:243
36309963,2cyclictest20530-21sh10:25:153
36309963,2cyclictest12371-21cat09:40:183
36309963,2cyclictest0-21swapper/311:37:233
36309963,1cyclictest0-21swapper/312:10:353
36309962,3cyclictest658-21snmpd10:21:423
36309962,3cyclictest658-21snmpd08:49:083
36309962,3cyclictest658-21snmpd08:39:443
36309962,3cyclictest658-21snmpd08:03:373
36309962,3cyclictest658-21snmpd07:45:003
36309962,3cyclictest29109-21cat10:50:163
36309962,3cyclictest13922-21cstates07:30:123
36309962,3cyclictest13853-21sort12:00:103
36309962,3cyclictest13396-21ls10:40:213
36309962,3cyclictest11200-21cat09:20:153
36309962,1cyclictest0-21swapper/311:11:293
36309962,1cyclictest0-21swapper/309:25:593
36309960,3cyclictest27762-21smart_sda09:10:193
36309960,0cyclictest0-21swapper/310:32:323
36279965,1cyclictest28-21ksoftirqd/209:40:002
36279963,2cyclictest9290-11brltty11:21:482
36279963,2cyclictest674-21lldpd11:04:502
36279963,2cyclictest658-21snmpd12:13:002
36279963,2cyclictest658-21snmpd08:04:012
36279963,2cyclictest5037-21sh09:16:142
36279963,2cyclictest27762-21cron10:50:012
36279963,2cyclictest24395-21ssh11:46:072
36279963,2cyclictest1258-21sh11:52:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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