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2026-04-16 - 19:58
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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 Thu Apr 16, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139892327296,20sleep10-21swapper/107:05:341
141992298267,20sleep20-21swapper/207:08:162
140512269238,21sleep00-21swapper/007:06:220
142882255223,21sleep30-21swapper/307:09:263
202722640,0sleep10-21swapper/110:18:421
193942590,0sleep00-21swapper/011:55:440
95892580,0sleep20-21swapper/211:30:192
25662560,0sleep30-21swapper/309:48:013
75272550,0sleep20-21swapper/208:05:142
280212540,1sleep122-21ksoftirqd/110:03:421
260822530,0sleep00-21swapper/008:45:150
30972520,0sleep20-21swapper/210:27:442
147802510,0sleep30-21swapper/310:54:563
28362400,0sleep30-21swapper/311:45:413
127922210,0sleep10-21swapper/112:11:101
75172200,0sleep10-21swapper/110:30:161
300902200,1sleep30-21swapper/310:05:073
229572190,0sleep00-21swapper/011:19:400
234342180,0sleep20-21swapper/211:39:322
157362180,0sleep00-21swapper/009:16:180
68352170,0sleep10-21swapper/109:30:251
312692170,1sleep1211rcuc/109:45:191
320532160,0sleep10-21swapper/109:00:091
281722160,0sleep20-21swapper/209:24:372
70992140,0sleep122-21ksoftirqd/112:08:231
64502130,0sleep20-21swapper/211:09:332
229332120,0sleep122934-21latency_hist10:40:011
19245290,0sleep30-21swapper/310:37:193
144609998,1cyclictest34-21ksoftirqd/311:40:023
144489993,3cyclictest18333-21munin-run12:35:000
144609987,1cyclictest34-21ksoftirqd/310:50:013
144609987,1cyclictest34-21ksoftirqd/309:35:003
144609985,2cyclictest8160-21cut11:10:153
144609985,2cyclictest34-21ksoftirqd/311:55:003
144569985,2cyclictest26919-21fschecks_time07:35:152
144569982,5cyclictest0-21swapper/211:00:132
144539986,2cyclictest22-21ksoftirqd/111:55:001
144489986,2cyclictest658-21snmpd09:21:570
10621280,0sleep10-21swapper/109:52:561
7441270,0sleep20-21swapper/211:29:512
3209270,0sleep10-21swapper/111:45:591
29520270,0sleep00-21swapper/011:23:080
21411270,0sleep10-21swapper/109:40:021
144609976,1cyclictest18888-21chrt09:57:583
144609975,1cyclictest14520-21basename10:35:013
144609974,2cyclictest18985-21df08:30:133
144609973,3cyclictest28949-21cat07:40:113
144609973,3cyclictest275-21systemd-journal08:00:543
144609973,3cyclictest25947-21ntpq11:40:183
144609973,2cyclictest275-21systemd-journal10:00:263
144609972,3cyclictest275-21systemd-journal09:10:043
144609972,3cyclictest275-21systemd-journal08:39:453
144609972,1cyclictest331rcuc/312:35:233
144569973,3cyclictest658-21snmpd11:59:382
144569973,3cyclictest504-21dbus-daemon09:20:002
144569973,3cyclictest275-21systemd-journal10:06:212
144569973,3cyclictest1-21systemd07:25:012
144569972,1cyclictest0-21swapper/210:55:132
144539975,2cyclictest22-21ksoftirqd/108:00:001
144539974,2cyclictest11197-21sshd11:31:221
144539973,3cyclictest658-21snmpd08:08:251
144539973,3cyclictest275-21systemd-journal08:25:001
144539972,1cyclictest237502diskmemload09:21:091
144539972,1cyclictest0-21swapper/110:53:241
144539970,6cyclictest5219-21/usr/sbin/munin08:00:141
144489974,2cyclictest504-21dbus-daemon10:45:450
144489973,3cyclictest658-21snmpd12:23:260
144489973,3cyclictest504-21dbus-daemon07:40:010
144489973,3cyclictest275-21systemd-journal10:26:220
144489972,3cyclictest30954-21munin-run10:45:010
144489972,3cyclictest30733-21ls07:45:010
144489972,3cyclictest275-21systemd-journal10:20:010
144489970,2cyclictest4583-21sshd09:10:110
10709270,1sleep00-21swapper/010:51:460
10375270,0sleep30-21swapper/312:10:123
3116260,0sleep20-21swapper/212:25:122
24032260,0sleep20-21swapper/210:00:342
144609966,0cyclictest0-21swapper/309:15:383
144609963,2cyclictest674-21lldpd09:53:373
144609963,2cyclictest658-21snmpd07:25:353
144609963,2cyclictest3627-21seq09:29:193
144609963,2cyclictest3627-21seq09:29:193
144609963,2cyclictest32490-21gltestperf09:00:113
144609963,2cyclictest32327-21ssh11:25:113
144609963,2cyclictest32326-21head11:05:153
144609963,2cyclictest31002-21cat08:55:183
144609963,2cyclictest2803-21grep09:05:183
144609963,2cyclictest27839-21cat07:35:213
144609963,2cyclictest27659-21sh11:21:403
144609963,2cyclictest275-21systemd-journal12:20:173
144609963,2cyclictest25534-21cat07:30:193
144609963,2cyclictest25304-21apt-get08:45:113
144609963,2cyclictest25025-21date12:00:003
144609963,2cyclictest23205-21uname10:20:143
144609963,2cyclictest17749-21sh11:15:353
144609963,2cyclictest15826-21chrt08:21:333
144609963,2cyclictest14104-21sh10:15:073
144609963,2cyclictest1-21systemd07:15:013
144609963,2cyclictest11299-21basename12:30:153
144609963,2cyclictest10976-21rm11:31:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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