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2024-04-20 - 11:15
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Sat Apr 20, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2996221210,4chrt29960-21aten2.4_r3power00:00:160
115021130,4chrt1148-21sshd00:09:510
297482950,5chrt29631-21latency_hist00:00:020
1947129114,37sleep00-21swapper/019:08:050
74602880,4chrt7442-21missed_timers20:00:250
198262800,5chrt19376-21apt-get20:35:130
30062790,4chrt2570-21apt-get19:50:110
210882770,4chrt21086-21forks23:35:220
57232690,4sleep05722-21cstates21:25:160
74232650,4chrt7093-21apt-get22:58:100
1986299577,40cyclictest14144-21apt-get20:20:100
19862995631,15cyclictest24395-21apt-get23:45:110
19862995229,18cyclictest14-21ksoftirqd/020:29:200
19862995129,13cyclictest21682-21apt-get20:40:100
8362502,7sleep0888-21python321:10:370
226632503,7sleep022739-21memory19:15:250
19862995034,10cyclictest12661-21diskstats20:15:180
1986299493,40cyclictest27802-21ntp_states22:25:270
1986299493,39cyclictest14478-21apt-get21:50:100
1986299493,39cyclictest129862sleep023:14:030
1986299485,35cyclictest28239-21diskstats19:30:220
19862994832,11cyclictest23503-21/usr/sbin/munin22:15:260
1986299482,41cyclictest13942-21ntpq23:15:320
19862994815,28cyclictest0-21swapper/023:30:090
1986299474,37cyclictest26929-21python319:25:300
1986299473,38cyclictest25259-21apt-get20:50:100
19862994727,15cyclictest3127-21chrt21:17:010
1986299472,39cyclictest30988-21diskstats21:05:230
107202472,39sleep09619-21/usr/sbin/munin23:05:340
1986299467,18cyclictest3670-21apt-get21:20:140
1986299467,17cyclictest9041-21apt-get21:35:120
19862994630,11cyclictest6709-21/usr/sbin/munin00:25:170
19862994628,11cyclictest29724-21python322:30:310
1986299462,26cyclictest18299-21awk22:00:170
1986299457,17cyclictest19874-21apt-get22:05:090
1986299457,16cyclictest23475-21apt-get20:45:140
1986299457,15cyclictest19940-21apt-get19:10:140
1986299453,11cyclictest29186-21df_inode21:00:180
19862994530,10cyclictest15385-21df_inode23:20:180
1986299452,38cyclictest19361-21seq20:34:590
1986299452,18cyclictest8500-21apt-get00:30:080
19862994518,19cyclictest10877-21cat20:10:180
177432450,5chrt17741-21wc23:25:340
1986299447,17cyclictest10903-21apt-get21:40:110
1986299447,15cyclictest30697-21apt-get22:35:100
1986299447,15cyclictest22604-21apt-get23:40:100
1986299446,15cyclictest3114-21apt-get00:15:140
1986299445,31cyclictest400-21apt-get22:40:190
1986299443,9cyclictest11006-21ntp_states00:35:350
1986299443,35cyclictest7244-21apt-get21:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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