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2026-03-19 - 17:54
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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 Thu Mar 19, 2026 13:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4645219524,56sleep04651-21df_inode07:05:150
56459911436,58cyclictest2010-21node09:10:080
56459911022,34cyclictest12569-21users07:35:500
56459910937,18cyclictest18065-21apt-get08:00:570
56459910642,47cyclictest10250irq/56-4a10000010:40:420
56459910632,35cyclictest7561-21diskstats09:25:210
56459910529,41cyclictest26441-21ntp_states08:30:410
56459910328,37cyclictest13772-21sshd07:40:470
56459910137,44cyclictest802-21in:imuxsock11:16:390
56459910128,20cyclictest5048-21diskstats09:15:240
56459910053,38cyclictest2658-21memory09:05:310
56459910038,44cyclictest9896-21sendmail_mailtr11:40:450
56459910023,57cyclictest22630-21ps12:30:400
5645999960,31cyclictest21149-21aten_r7power_vo08:10:120
5645999953,34cyclictest18058-21runrttasks08:00:000
5645999945,35cyclictest20276-21aten_r7power_vo10:15:140
5645999937,21cyclictest10972-21ntp_states11:45:380
5645999930,54cyclictest10250irq/56-4a10000009:45:140
5645999929,31cyclictest9690-21/usr/sbin/munin07:25:210
5645999925,37cyclictest17194-21apt-get10:06:320
5645999919,38cyclictest7737-21apt-get07:17:060
5645999838,21cyclictest13465-21awk11:55:380
5645999828,36cyclictest1305-21snmpd08:19:110
5645999824,20cyclictest5405-21df11:25:150
5645999765,22cyclictest27566-21if_eth008:35:270
5645999760,28cyclictest26286-21sendmail10:40:000
5645999754,32cyclictest28375-21runrttasks10:46:340
5645999733,46cyclictest1614-21sshd09:00:450
5645999733,43cyclictest5970-21fw_forwarded_lo07:10:280
5645999728,33cyclictest8386-21fw_packets11:35:510
5645999727,51cyclictest22696-21hostname10:25:130
5645999727,35cyclictest20116-21irqstats08:05:310
5645999726,20cyclictest32450-21df08:55:140
5645999635,48cyclictest19569-21latency_hist12:20:040
5645999626,16cyclictest1408-21nginx09:31:070
5645999624,19cyclictest28698-21cpu08:40:140
5645999623,19cyclictest29069-21/usr/sbin/munin10:50:160
5645999566,19cyclictest9425-21latency_hist07:25:020
5645999565,22cyclictest14829-21gpgv12:00:250
5645999551,34cyclictest15698-21/usr/sbin/munin07:50:100
5645999525,49cyclictest30431-21sshd08:45:580
5645999523,20cyclictest11297-21diskstats09:40:220
5645999456,29cyclictest24413-21seq08:22:400
5645999429,47cyclictest7154-21chrt09:24:210
5645999425,30cyclictest1608-21ntpd11:50:370
5645999365,20cyclictest24557-21readlink12:40:010
5645999352,31cyclictest15944-21/usr/sbin/munin12:05:430
5645999335,38cyclictest20542-21sshd12:22:400
5645999326,28cyclictest18390-21sort12:15:040
5645999260,22cyclictest13582-21aten_r7power_cu09:50:130
5645999258,18cyclictest16543-21processes10:00:430
5645999257,24cyclictest10026-21df_inode09:35:190
5645999239,41cyclictest7626-21https11:35:070
5645999232,19cyclictest19141-21diskstats10:10:210
5645999229,47cyclictest4375-21ntp_states11:20:400
5645999227,35cyclictest21683-21fw_forwarded_lo10:20:270
5645999225,34cyclictest10926-21diskstats07:30:210
5645999154,29cyclictest14813-21ntpq07:45:350
5645999145,35cyclictest25044-21seq08:25:250
5645999122,35cyclictest1305-21snmpd10:31:440
5645999041,34cyclictest1305-21snmpd11:04:470
5645999029,22cyclictest22098-21latency_hist12:30:040
5645998945,33cyclictest1569-21grep11:10:150
5645998941,32cyclictest10250irq/56-4a10000008:50:040
5645998646,30cyclictest2010-21node10:55:440
5645998618,33cyclictest1305-21snmpd09:59:340
5645998445,30cyclictest787-21haveged11:05:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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