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2025-11-26 - 18:13
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 highest latencies:
System rack7slot8.osadl.org (updated Wed Nov 26, 2025 13:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31442218022,53sleep031444-21irqstats07:05:340
323219917127,126cyclictest13375-21apt-get12:11:490
323219917044,90cyclictest10250irq/56-4a10000008:37:100
323219916840,90cyclictest10250irq/56-4a10000007:31:520
323219916336,109cyclictest10250irq/56-4a10000007:15:000
32321991628,134cyclictest1356-21snmpd07:45:270
32321991618,20cyclictest6282-21diskstats09:35:230
323219916119,16cyclictest1424-21nginx10:35:200
323219916022,14cyclictest10250irq/56-4a10000010:22:350
323219916017,19cyclictest15599-21wget10:10:120
32321991579,15cyclictest31316-21ntp_states11:10:390
323219915741,103cyclictest18035-21ntpq12:25:430
323219915730,115cyclictest22942-21apt-get10:40:280
323219915729,17cyclictest2509-21/usr/sbin/munin07:20:530
32321991568,20cyclictest1356-21snmpd08:45:080
32321991568,19cyclictest4069-21ntp_states09:26:230
323219915639,106cyclictest1801-21node10:03:270
323219915535,108cyclictest25055-21ntpq10:45:370
323219915531,113cyclictest29098-21apt-key09:00:280
323219915431,106cyclictest10250irq/56-4a10000011:40:260
323219915430,106cyclictest10250irq/56-4a10000007:43:010
323219915425,116cyclictest5042-21diskstats09:30:230
323219915423,20cyclictest28440-21/usr/sbin/munin11:00:110
323219915422,19cyclictest1356-21snmpd11:57:540
323219915413,13cyclictest1424-21nginx12:20:060
32321991539,15cyclictest29875-21df11:05:180
32321991537,18cyclictest32389-21diskstats11:15:250
32321991537,18cyclictest1356-21snmpd08:03:030
323219915338,103cyclictest21892-21https08:35:060
323219915331,112cyclictest17211-21ntp_states10:15:420
323219915323,119cyclictest12596-21runrttasks10:00:020
32321991527,21cyclictest26329-21ntp_states10:50:400
32321991527,126cyclictest2751-21runrttasks09:22:110
323219915233,106cyclictest891-21sshd09:15:530
323219915230,99cyclictest12488-21fw_forwarded_lo12:05:280
323219915226,18cyclictest1356-21snmpd10:27:360
323219915217,22cyclictest1356-21snmpd11:35:490
32321991517,16cyclictest28332-21sendmail-msp11:00:030
323219915126,113cyclictest19574-21wget08:25:180
323219915126,111cyclictest17730-21cron08:17:000
323219915125,110cyclictest10250irq/56-4a10000007:50:040
32321991506,17cyclictest7201-21apt-get09:42:120
323219915013,15cyclictest4866-21latency_hist07:30:020
32321991499,17cyclictest10440-21fw_forwarded_lo09:50:270
32321991497,17cyclictest11127-21wget12:00:180
32321991497,120cyclictest14208-21/usr/sbin/munin08:05:130
323219914941,98cyclictest14943-21wc10:06:290
323219914927,111cyclictest26481-21ntp_states08:50:380
323219914837,98cyclictest16281-21chrt12:20:020
323219914816,18cyclictest1356-21snmpd11:52:530
32321991478,29cyclictest1450-21fw_forwarded_lo07:15:260
32321991477,20cyclictest1356-21snmpd12:33:020
32321991477,14cyclictest27543-21diskstats08:55:240
32321991476,19cyclictest31680-21diskstats09:10:240
323219914733,104cyclictest2557-21awk11:25:300
323219914733,101cyclictest20392-21if_eth012:35:310
323219914730,104cyclictest15846-21wget08:10:170
32321991468,18cyclictest1356-21snmpd08:42:130
32321991466,17cyclictest1356-21snmpd11:47:520
323219914640,93cyclictest12727-21run-parts08:00:010
323219914638,97cyclictest3846-21netstat11:30:340
32321991457,22cyclictest1218-21diskstats11:20:230
323219914415,17cyclictest20654-21wget10:30:130
323219914410,20cyclictest30836-21users09:05:510
32321991436,17cyclictest6471-21sshd07:35:270
32321991427,27cyclictest9779-21sshd09:47:280
323219913944,86cyclictest18288-21cut08:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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