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2025-12-17 - 14:52
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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 Dec 17, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
219022315290,17sleep20-21swapper/207:06:032
219472300272,19sleep10-21swapper/107:06:371
221372252227,16sleep00-21swapper/007:08:490
222082250223,17sleep30-21swapper/307:09:463
190892630,1sleep019092-21sed10:35:140
210522560,0sleep10-21swapper/109:29:001
105102450,0sleep10-21swapper/110:15:161
327032180,0sleep10-21swapper/107:30:131
305022140,0sleep00-21swapper/009:50:010
22589280,0sleep30-21swapper/309:30:173
223609980,7cyclictest17040-21latency_hist11:45:000
223689977,0cyclictest0-21swapper/312:35:123
223689975,2cyclictest34-21ksoftirqd/307:15:013
223689973,3cyclictest504-21dbus-daemon11:05:223
223689973,3cyclictest275-21systemd-journal10:17:013
223639975,2cyclictest28-21ksoftirqd/207:15:012
223639975,1cyclictest28-21ksoftirqd/207:40:012
223639973,3cyclictest658-21snmpd08:14:032
223639973,3cyclictest275-21systemd-journal10:29:552
223639973,3cyclictest20457-21ntpq11:50:142
223639972,3cyclictest275-21systemd-journal12:10:012
223609973,3cyclictest658-21snmpd08:32:480
223609973,3cyclictest658-21snmpd07:29:050
223609972,3cyclictest32588-21turbostat09:55:010
28636260,0sleep00-21swapper/010:55:190
223689963,2cyclictest8569-21seq11:25:113
223689963,2cyclictest658-21snmpd11:15:173
223689963,2cyclictest658-21snmpd10:37:193
223689963,2cyclictest658-21snmpd09:41:213
223689963,2cyclictest658-21snmpd07:40:523
223689963,2cyclictest275-21systemd-journal12:10:003
223689963,2cyclictest11605-21diskstats07:55:143
223689962,3cyclictest791-21expr09:55:123
223689962,3cyclictest658-21snmpd12:15:103
223689962,3cyclictest658-21snmpd12:04:543
223689962,3cyclictest658-21snmpd11:58:303
223689962,3cyclictest658-21snmpd11:14:383
223689962,3cyclictest658-21snmpd10:55:293
223689962,3cyclictest658-21snmpd10:21:133
223689962,3cyclictest658-21snmpd10:06:553
223689962,3cyclictest658-21snmpd10:01:373
223689962,3cyclictest658-21snmpd09:08:313
223689962,3cyclictest658-21snmpd08:17:173
223689962,3cyclictest658-21snmpd07:30:463
223689962,3cyclictest5875-21grep12:30:133
223689962,3cyclictest4361-21cat07:40:013
223689962,3cyclictest29438-21cat12:10:133
223689962,3cyclictest275-21systemd-journal08:07:303
223689962,3cyclictest14380-21ntpq08:00:163
223689962,2cyclictest275-21systemd-journal08:14:593
223689961,3cyclictest275-21systemd-journal08:45:013
223689960,5cyclictest275-21systemd-journal09:15:003
223689960,5cyclictest0-21swapper/307:10:193
223689960,2cyclictest19888-21df11:50:113
223689960,0cyclictest0-21swapper/309:45:143
223639966,0cyclictest0-21swapper/209:55:182
223639966,0cyclictest0-21swapper/209:10:172
223639965,1cyclictest28-21ksoftirqd/209:45:012
223639963,2cyclictest7706-21tr07:45:172
223639963,2cyclictest6528-21sed08:55:182
223639963,2cyclictest504-21dbus-daemon11:15:232
223639963,2cyclictest23266-21fschecks_count07:10:212
223639962,3cyclictest9183-21expr11:25:152
223639962,3cyclictest658-21snmpd12:22:162
223639962,3cyclictest658-21snmpd12:02:452
223639962,3cyclictest658-21snmpd11:56:092
223639962,3cyclictest658-21snmpd11:41:122
223639962,3cyclictest658-21snmpd10:50:172
223639962,3cyclictest658-21snmpd10:35:042
223639962,3cyclictest658-21snmpd10:33:192
223639962,3cyclictest658-21snmpd10:18:342
223639962,3cyclictest658-21snmpd10:14:342
223639962,3cyclictest658-21snmpd09:25:292
223639962,3cyclictest658-21snmpd09:20:372
223639962,3cyclictest658-21snmpd09:05:302
223639962,3cyclictest658-21snmpd08:48:182
223639962,3cyclictest658-21snmpd08:36:542
223639962,3cyclictest658-21snmpd08:28:512
223639962,3cyclictest658-21snmpd08:07:422
223639962,3cyclictest658-21snmpd07:52:552
223639962,3cyclictest658-21snmpd07:21:582
223639962,3cyclictest31660-21cat12:15:122
223639962,3cyclictest275-21systemd-journal11:32:072
223639962,3cyclictest11219-21apt07:55:142
223639961,3cyclictest275-21systemd-journal07:27:512
223639960,2cyclictest32390-21/usr/sbin/munin07:30:132
223629964,2cyclictest504-21dbus-daemon11:35:001
223629964,2cyclictest22-21ksoftirqd/111:50:001
223629963,2cyclictest7405-21apt-get10:10:121
223629963,2cyclictest658-21snmpd12:19:291
223629963,2cyclictest658-21snmpd12:08:461
223629963,2cyclictest658-21snmpd10:47:501
223629963,2cyclictest658-21snmpd09:56:391
223629963,2cyclictest22-21ksoftirqd/112:30:011
223629963,2cyclictest19528-21chrt08:11:121
223629962,3cyclictest674-21lldpd11:03:131
223629962,3cyclictest658-21snmpd11:51:481
223629962,3cyclictest658-21snmpd10:31:161
223629962,3cyclictest658-21snmpd08:33:001
223629962,3cyclictest658-21snmpd08:20:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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