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2024-04-20 - 16:08
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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 100 highest latencies:
System rack3slot6.osadl.org (updated Sat Apr 20, 2024 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2612021270,4chrt26118-21diskstats08:20:190
229721170,4chrt2296-21unixbench_singl10:10:330
104122900,4chrt10413-21missed_timers09:05:240
214762850,4chrt21472-21grep12:30:350
247962820,4chrt24794-21python308:15:320
34028014,27sleep00-21swapper/007:09:360
119382800,5sleep011937-21plymouth10:40:000
179052780,5chrt17903-21irqstats10:55:260
93012760,4chrt9302-21cat10:30:370
253602740,4chrt25358-21ntpq09:45:320
34332710,4chrt3432-21pluginstate08:45:320
310912560,4chrt31092-21ntp_states11:30:310
524995232,13cyclictest18235-21python309:25:350
52499516,36cyclictest13864-21apt-get10:45:090
310192513,43sleep031033-21munin-run08:35:000
52499506,14cyclictest15625-21apt-get09:20:110
52499504,40cyclictest2880-21apt-get07:15:120
52499503,16cyclictest16764-21diskstats07:55:150
52499502,42cyclictest31431-21chrt10:02:580
524994915,19cyclictest784-21apt-config08:40:040
524994832,10cyclictest13720-21ntp_states12:10:300
113532482,8sleep010520-31find07:36:030
52499477,30cyclictest12021-21apt-get09:10:330
52499476,13cyclictest9425-21apt-get12:00:270
52499473,40cyclictest15654-21apt-get10:50:100
52499472,39cyclictest12813-21chrt12:09:330
138062472,39sleep013810-21apt-get09:15:110
52499468,16cyclictest28221-21apt-get09:55:100
52499468,15cyclictest405-21dbus-daemon12:39:590
52499467,29cyclictest601-21apt-get07:10:130
52499467,18cyclictest32174-21apt-get11:35:110
52499467,17cyclictest20345-21apt-get08:05:210
52499464,9cyclictest19820-21users12:25:440
524994633,9cyclictest3726-21ntp_states10:15:290
524994617,19cyclictest14260-21cat07:45:220
52499457,16cyclictest5494-21apt-get11:50:130
52499455,32cyclictest22188-21apt-get08:10:100
52499454,9cyclictest21690-21df_inode11:05:280
52499453,36cyclictest3720-21df_inode11:45:200
524994530,11cyclictest12618-21irqstats07:40:430
524994529,10cyclictest4956-21cpuspeed_turbos07:20:170
524994520,22cyclictest0-21swapper/007:51:570
313972450,4sleep031396-21cpuspeed08:35:160
52499447,17cyclictest22861-21apt-get09:40:140
52499447,15cyclictest8090-21apt-get09:00:130
52499447,15cyclictest31832-21apt-get10:05:130
52499446,15cyclictest4487-21apt-get08:50:130
52499446,15cyclictest27584-21apt-get08:25:140
52499445,32cyclictest19204-21apt-get09:30:120
52499444,9cyclictest26887-21irqstats09:50:250
52499443,35cyclictest6937-21irqstats07:25:240
52499443,35cyclictest18680-21cat08:00:240
524994431,9cyclictest26796-21apt-get11:20:110
524994429,10cyclictest8274-21/usr/sbin/munin07:30:330
52499442,32cyclictest1601-21/usr/sbin/munin11:40:320
52499435,16cyclictest23194-21apt-get11:10:130
52499434,33cyclictest29807-21apache211:55:390
52499433,35cyclictest25686-21ntp_states11:15:310
52499433,34cyclictest474-21lldpd09:35:140
52499432,10cyclictest18082-21chrt12:23:300
524994319,14cyclictest28586-21apt-get11:25:130
524994314,19cyclictest12415-21cat10:40:190
52499423,33cyclictest20400-21sshd11:00:560
524994222,13cyclictest6280-21apt-get08:55:150
52499422,16cyclictest7037-21/usr/sbin/munin10:25:200
52499413,10cyclictest5186-21diskstats10:20:230
524994117,16cyclictest15153-21cat12:15:230
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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