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2024-04-28 - 14:19
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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 376 highest latencies:
System rack3slot6.osadl.org (updated Sun Apr 28, 2024 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1375821550,4chrt13750-21ntp_states19:15:080
3005321130,4chrt30050-21ntpq23:00:270
2683921080,4chrt26838-21sort21:25:190
1096128217,27sleep00-21swapper/019:09:260
304632810,4chrt30464-21latency_hist21:35:000
83792740,4chrt8381-21grep23:30:270
293342620,5chrt29333-21ls23:00:000
11148996133,17cyclictest15284-21apt-get23:50:200
11148996022,33cyclictest31885-21sshd21:37:590
1114899588,40cyclictest20726-21apt-get00:05:130
11148995730,22cyclictest4947-21snmpd20:46:290
11148995429,14cyclictest23617-21apt-get19:45:090
1114899533,40cyclictest32619-21users00:35:380
1114899513,13cyclictest12832-21apt-get22:15:100
11148995034,10cyclictest31854-21ntp_states23:05:290
11148995026,19cyclictest4947-21snmpd00:22:140
1114899502,41cyclictest12109-21ntp_states23:40:300
11148995023,22cyclictest4947-21snmpd22:06:210
1114899502,18cyclictest19174-21/usr/sbin/munin00:00:190
33532492,13sleep0405-21dbus-daemon21:50:010
1114899498,19cyclictest7411-21apt-get22:00:140
281662482,7sleep028279-21cstates20:00:210
234722482,41sleep023487-21munin-run19:45:000
136612480,4sleep013658-21uname23:45:210
1114899488,16cyclictest21024-21apt-get19:35:130
1114899484,38cyclictest24508-21memory22:45:280
11148994822,22cyclictest22993-21/usr/sbin/munin21:15:150
1114899478,18cyclictest10091-21apt-get20:40:140
11148994733,9cyclictest4970-21df_inode20:25:210
11148994733,9cyclictest4171-21apt-get23:20:130
11148994731,10cyclictest16737-21/usr/sbin/munin22:25:280
11148994728,9cyclictest15796-21df20:55:290
11148994722,20cyclictest5637-21telnet21:55:160
11148994719,24cyclictest4947-21snmpd19:11:110
1114899468,16cyclictest2830-21apt-get20:20:140
1114899464,36cyclictest8546-21df20:35:210
1114899463,38cyclictest21015-21ntp_states22:35:280
1114899463,37cyclictest27953-21apt-get00:25:140
1114899463,37cyclictest22561-21apt-get00:10:100
1114899463,37cyclictest1008-21users21:40:360
1114899463,36cyclictest22334-21users21:10:570
11148994632,9cyclictest0-21swapper/019:30:420
11148994631,9cyclictest29745-21apt-get00:30:150
11148994629,10cyclictest6283-21df_inode23:25:190
11148994620,23cyclictest0-21swapper/000:16:170
1114899458,17cyclictest26179-21apt-get19:55:080
1114899457,16cyclictest24809-21apt-get21:20:100
1114899453,37cyclictest23004-21python322:40:340
11148994531,10cyclictest25487-21runrttasks19:50:490
1114899452,37cyclictest11035-21/usr/sbin/munin22:10:340
11148994519,22cyclictest19061-21/usr/sbin/munin21:05:230
1114899447,16cyclictest18534-21apt-get22:30:130
1114899445,29cyclictest25760-21apt-get22:50:100
1114899444,34cyclictest2346-21/usr/sbin/munin23:15:270
1114899444,34cyclictest17268-21/usr/sbin/munin21:00:170
1114899444,18cyclictest1352-21cat20:15:200
11148994428,11cyclictest336-21sshd20:11:130
1114899442,11cyclictest17422sleep023:11:150
1114899433,35cyclictest14012-21diskstats20:50:250
1114899433,34cyclictest10240-21ntp_states23:35:290
11148994327,12cyclictest14-21ksoftirqd/022:20:440
11148994327,12cyclictest14-21ksoftirqd/021:53:580
1114899432,11cyclictest17432-21seq19:25:060
1114899423,34cyclictest29900-21aten2.4_r3power20:05:140
1114899422,8cyclictest7537-21chrt20:30:360
11148994227,10cyclictest17776-21ntp_states23:55:290
11148994217,20cyclictest4947-21snmpd19:21:130
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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