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2026-06-09 - 15:58
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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 50 highest latencies:
System rack7slot8.osadl.org (updated Tue Jun 09, 2026 02:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1996219827,56sleep02002-21diskstats19:05:170
29929916253,29cyclictest101ktimersoftd/021:35:220
29929916125,17cyclictest17761-21latency_hist22:15:020
2992991608,41cyclictest2931-21apt-get21:17:080
6553211714,91sleep05803-21apt-get21:30:360
489221169,94sleep04893-21diskstats21:25:230
1030721159,11sleep010356-21cat23:55:040
983021094,12sleep09831-21sshd21:44:170
8701210910,13sleep08702-21sshd23:47:170
149421095,89sleep01514-21/usr/sbin/munin21:10:480
2774721057,86sleep01480-21munin-node22:55:020
21421210513,11sleep021436-21fw_conntrack00:35:230
1017121055,11sleep010223-21cpuspeed21:45:160
1738021045,11sleep017381-21memory00:20:330
545021015,12sleep05475-21sendmail-msp19:20:010
1812721015,78sleep018158-21if_eth022:15:310
3110321006,82sleep031137-21/usr/sbin/munin21:00:280
206322995,10sleep020633-21fw_forwarded_lo22:25:270
248152985,12sleep024818-21df_inode20:35:170
222392975,11sleep022240-21users22:30:500
2992999535,39cyclictest0-21swapper/023:35:120
2992999443,33cyclictest26198-21runrttasks20:40:330
162762935,76sleep016277-21ntp_states00:16:170
145222925,77sleep014557-21if_eth019:55:270
2992999135,24cyclictest10250irq/56-4a10000019:28:090
120002916,71sleep012003-21df_inode19:45:200
2992998945,30cyclictest3650irq/20-4900000020:17:240
2992998922,17cyclictest16431-21runrttasks20:03:080
230952896,73sleep01305-21snmpd20:28:370
319032877,68sleep031904-21memory23:10:320
2992998732,39cyclictest0-21swapper/019:42:460
2992998623,18cyclictest4057-21latency_hist23:30:030
2992998549,27cyclictest0-21swapper/023:20:180
2992998542,35cyclictest19599-21sshd00:28:050
2992998519,47cyclictest0-21swapper/021:08:050
299299837,44cyclictest17805-21sshd20:09:150
2992998320,31cyclictest787-21haveged19:15:020
2992998315,22cyclictest11514-21munin-run00:00:020
2992998242,27cyclictest101ktimersoftd/019:52:480
2992998236,30cyclictest18384-21grep20:10:350
2992998227,18cyclictest13230-21/usr/sbin/munin00:05:350
2992998129,36cyclictest7093-21open_files23:40:490
2992998050,12cyclictest10150irq/55-4a10000000:30:220
2992998038,34cyclictest28699-21nfs4_client20:50:340
2992998018,16cyclictest1540-21latency_hist23:20:040
2992997937,29cyclictest3650irq/20-4900000022:45:240
2992997924,17cyclictest10434-21runrttasks19:40:000
2992997920,14cyclictest20274-21latency_hist22:25:040
299299788,19cyclictest16165-21https22:10:050
2992997859,11cyclictest101ktimersoftd/000:00:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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