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2026-04-30 - 16:33
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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 30, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
284682276250,16sleep10-21swapper/107:06:021
284902273246,18sleep20-21swapper/207:06:182
286132258232,17sleep00-21swapper/007:07:540
285012250219,21sleep30-21swapper/307:06:283
101162610,0sleep00-21swapper/011:02:260
15952600,3sleep122-21ksoftirqd/110:18:071
140582600,0sleep20-21swapper/211:05:122
96252590,0sleep00-21swapper/010:42:390
96252590,0sleep00-21swapper/010:42:390
148932590,0sleep10-21swapper/111:25:141
36132570,0sleep10-21swapper/112:36:561
249332560,0sleep20-21swapper/209:14:472
219072560,0sleep30-21swapper/312:09:073
173062190,0sleep00-21swapper/009:29:440
143582190,0sleep20-21swapper/212:24:212
223912170,0sleep10-21swapper/112:09:301
2890599150,2cyclictest275-21systemd-journal09:55:012
151252150,0sleep30-21swapper/310:06:123
2890099140,13cyclictest11756-21grep09:45:141
2890599130,2cyclictest8463-21apt-get07:35:102
111152130,0sleep00-21swapper/009:45:140
2890599121,2cyclictest275-21systemd-journal10:50:092
2890599120,3cyclictest8914-21ssh11:40:462
2890599120,2cyclictest14824-21ssh11:45:112
2890599112,5cyclictest16244-21sh10:46:242
2890599112,1cyclictest0-21swapper/208:20:012
2890599110,3cyclictest275-21systemd-journal12:40:012
2890599110,2cyclictest31383-21fw_packets07:15:022
2890599110,2cyclictest275-21systemd-journal12:35:012
2890599110,2cyclictest275-21systemd-journal12:14:562
2890599110,2cyclictest21763-21ssh11:29:442
2890599110,2cyclictest1679-21ssh11:56:092
2890599110,2cyclictest12112-21memory09:45:162
2890599110,1cyclictest9832-21ssh10:42:482
2890599110,1cyclictest9832-21ssh10:42:482
2890599110,1cyclictest4063-21apt-get10:00:132
2890599110,1cyclictest23503-21sed11:30:152
2890599110,1cyclictest18122-21apt-get09:30:102
2890599110,1cyclictest0-21swapper/211:00:122
2890599103,6cyclictest504-21dbus-daemon07:25:192
2890599102,2cyclictest28906-21grep09:55:162
2890599102,1cyclictest31572-21grep11:15:172
2890599101,2cyclictest30822-21grep11:55:012
2890599100,3cyclictest2614-21grep08:35:002
2890599100,2cyclictest3289-21/usr/sbin/munin07:20:202
2890599100,2cyclictest28845-21ssh09:16:242
2890599100,2cyclictest28588-21apt-get08:20:122
2890599100,2cyclictest28241-21munin-plugin-st10:15:002
2890599100,2cyclictest275-21systemd-journal09:05:002
2890599100,2cyclictest275-21systemd-journal07:55:012
2890599100,2cyclictest19406-21systemctl08:00:012
2890599100,2cyclictest18319-21ssh12:06:182
2890599100,2cyclictest13298-21basename10:05:302
2890599100,2cyclictest11996-21ssh09:25:372
2890599100,1cyclictest5313-21sh12:18:392
2890599100,1cyclictest26283-21ssh11:12:152
2890599100,1cyclictest21909-21apt-get08:05:122
2890599100,1cyclictest13878-21apt11:25:012
2890599100,1cyclictest13139-21irqstats09:00:152
2890599100,1cyclictest0-21swapper/209:44:042
289099991,5cyclictest275-21systemd-journal10:50:103
289059992,6cyclictest7596-21cat08:45:132
289059992,2cyclictest16857-21proc_pri12:25:182
289059992,1cyclictest2413-21cat09:20:212
289059991,1cyclictest28696-21apt-get10:15:112
289059991,1cyclictest0-21swapper/208:25:112
289059990,3cyclictest6185-21tr11:40:012
289059990,3cyclictest275-21systemd-journal08:01:492
289059990,3cyclictest13947-21awk07:45:162
289059990,3cyclictest12163-21ls07:40:202
289059990,2cyclictest9860-21chrt08:54:102
289059990,2cyclictest7078-21idleruntime-cro08:45:012
289059990,2cyclictest6831-21which07:30:152
289059990,2cyclictest4682-21ssh10:20:112
289059990,2cyclictest3267-21sshd08:35:142
289059990,2cyclictest30352-21sh10:35:182
289059990,2cyclictest30315-21smartctl07:10:152
289059990,2cyclictest30228-21df10:55:132
289059990,2cyclictest26365-21find09:35:102
289059990,2cyclictest20807-21/usr/sbin/munin10:30:132
289059990,2cyclictest10797-21hddtemp_smartct08:55:122
289059990,1cyclictest6970-21ssh12:00:062
289059990,1cyclictest26072-21apt08:15:012
289059990,1cyclictest12751-21ssh10:25:122
9087280,0sleep10-21swapper/109:44:191
289099983,3cyclictest275-21systemd-journal08:50:453
289099983,1cyclictest0-21swapper/312:10:123
288979987,1cyclictest12-21ksoftirqd/009:25:000
29731270,0sleep30-21swapper/311:54:113
289099973,3cyclictest658-21snmpd09:45:363
289099973,3cyclictest4857-21tr08:40:003
289099973,3cyclictest3162-21ssh09:20:263
289099970,1cyclictest0-21swapper/312:26:183
289009976,1cyclictest0-21swapper/111:41:591
289009973,3cyclictest658-21snmpd12:15:161
289009973,3cyclictest658-21snmpd11:54:231
289009973,3cyclictest275-21systemd-journal08:37:151
289009973,3cyclictest275-21systemd-journal07:55:011
289009970,1cyclictest16065-21ssh11:05:411
288979974,2cyclictest275-21systemd-journal11:29:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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