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2026-04-08 - 16:50
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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 Apr 08, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
230672288225,20sleep10-21swapper/107:09:041
229982285217,21sleep00-21swapper/007:08:100
229572270220,41sleep20-21swapper/207:07:402
211682252221,20sleep30-21swapper/307:05:083
65492660,0sleep10-21swapper/110:03:371
59442640,0sleep30-21swapper/311:40:293
149172630,0sleep10-21swapper/111:26:331
284042600,0sleep20-21swapper/210:55:192
295212580,0sleep20-21swapper/209:38:262
232162490,0sleep10-21swapper/110:33:201
21722200,0sleep30-21swapper/307:30:193
180472190,0sleep10-21swapper/111:09:281
145582190,0sleep10-21swapper/110:28:031
8792170,0sleep00-21swapper/012:16:460
248422170,0sleep20-21swapper/209:55:132
220922170,0sleep10-21swapper/109:14:471
141952170,0sleep30-21swapper/311:25:593
131412160,0sleep10-21swapper/110:07:211
187862140,0sleep30-21swapper/312:08:203
32112130,0sleep00-21swapper/010:20:380
189192130,0sleep30-21swapper/310:10:283
60702100,0sleep00-21swapper/009:24:350
232339998,1cyclictest22-21ksoftirqd/110:45:001
3972280,1sleep2271rcuc/210:01:382
3433280,0sleep10-21swapper/111:59:251
30177280,0sleep00-21swapper/010:56:400
232439983,3cyclictest275-21systemd-journal11:13:213
232389983,3cyclictest275-21systemd-journal08:10:062
232389982,3cyclictest7443-21munin-run09:45:002
232389981,3cyclictest275-21systemd-journal09:48:092
232389980,7cyclictest0-21swapper/210:50:122
232339985,3cyclictest22-21ksoftirqd/112:05:011
232339981,2cyclictest19247-21apt-get11:10:111
232329981,4cyclictest483-21avahi-daemon10:20:010
232329981,4cyclictest483-21avahi-daemon10:20:010
232329980,7cyclictest23329-21ssh11:31:410
23730270,0chrt0-21swapper/011:12:270
232439976,1cyclictest29027-21ssh12:34:173
232439974,2cyclictest18940-21sh09:12:233
232439973,3cyclictest658-21snmpd08:29:583
232439973,3cyclictest6428-21cat07:40:153
232439973,3cyclictest504-21dbus-daemon11:55:003
232439973,3cyclictest25544-21expr10:15:123
232439973,3cyclictest25544-21expr10:15:123
232439973,3cyclictest13906-11brltty09:28:333
232439973,2cyclictest275-21systemd-journal09:18:083
232439973,1cyclictest0-21swapper/312:03:163
232439970,7cyclictest0-21swapper/310:20:183
232389970,1cyclictest5043-21ssh12:39:242
232339977,0cyclictest221ksoftirqd/112:30:011
232339973,3cyclictest658-21snmpd07:23:591
232339973,3cyclictest10960-21cat07:50:141
232339972,4cyclictest0-21swapper/108:35:011
232339970,3cyclictest141rcu_preempt10:45:161
232339970,2cyclictest24394-21hddtemp_smartct09:35:151
232329976,1cyclictest12-21ksoftirqd/008:20:010
232329974,2cyclictest12-21ksoftirqd/007:40:010
232329973,3cyclictest658-21snmpd12:38:230
232329973,3cyclictest658-21snmpd07:10:080
232329973,3cyclictest504-21dbus-daemon11:07:120
232329973,3cyclictest3509-21grep11:20:120
232329973,3cyclictest19379-21munin-run11:30:000
232329973,2cyclictest275-21systemd-journal08:02:470
232329973,1cyclictest20990-21turbostat12:10:010
232329972,3cyclictest275-21systemd-journal07:45:210
27482260,0sleep10-21swapper/109:17:311
232439966,0cyclictest0-21swapper/310:47:143
232439965,1cyclictest34-21ksoftirqd/311:00:003
232439963,2cyclictest658-21snmpd10:30:443
232439963,2cyclictest5405-21date07:40:013
232439963,2cyclictest504-21dbus-daemon09:10:003
232439963,2cyclictest501-21in:imuxsock12:19:173
232439963,2cyclictest501-21in:imuxsock07:27:383
232439963,2cyclictest4430-21sh11:20:163
232439963,2cyclictest30967-21sh11:36:103
232439963,2cyclictest30866-21sh11:16:363
232439963,2cyclictest2504-21ssh12:37:283
232439963,2cyclictest21440-21sshd08:12:443
232439963,2cyclictest19628-21sh11:30:023
232439963,2cyclictest16433-21ssh11:47:163
232439963,2cyclictest1581-21sh10:40:033
232439963,2cyclictest14094-21rm10:27:423
232439962,3cyclictest9217-21df10:05:133
232439962,3cyclictest8056-21cut08:55:123
232439962,3cyclictest658-21snmpd12:11:463
232439962,3cyclictest658-21snmpd10:02:343
232439962,3cyclictest658-21snmpd09:23:113
232439962,3cyclictest658-21snmpd08:48:043
232439962,3cyclictest658-21snmpd08:18:033
232439962,3cyclictest658-21snmpd07:13:263
232439962,3cyclictest6447-21memory12:20:143
232439962,3cyclictest5687-21cat08:50:123
232439962,3cyclictest3792-21cut11:00:173
232439962,3cyclictest32266-21cat09:40:113
232439962,3cyclictest25267-21grep09:55:143
232439962,3cyclictest24377-21expr08:20:123
232439962,3cyclictest15182-21grep12:25:183
232439962,3cyclictest1319-21cat08:40:143
232439962,3cyclictest11944-21cat11:05:163
232439962,3cyclictest11147-21ntpq07:50:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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