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2024-04-27 - 13:02
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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 highest latencies:
System rack3slot6.osadl.org (updated Sat Apr 27, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1008621200,4chrt10085-21needreboot23:10:270
2836321170,4chrt28364-21timerandwakeup22:30:330
391121080,4chrt3913-21timerwakeupswit00:20:380
302472950,4sleep030244-21grep22:35:360
273912860,5chrt27388-21sendmail00:00:000
220792850,4chrt22077-21ntp_offset19:15:260
274752830,4chrt27473-21diskstats21:00:200
171982820,4chrt17196-21cat22:00:320
8052800,7chrt806-21dpkg00:15:010
1885828014,28sleep00-21swapper/019:09:210
115182790,4sleep011520-21missed_timers21:45:280
165432770,4chrt16542-21cpuspeed_turbos20:30:160
7992760,5chrt800-21df22:45:190
1904399676,50cyclictest11296-21apt-get23:15:120
1904399617,42cyclictest3733-21apt-get21:25:110
19043996035,14cyclictest23899-21apt-get22:20:120
19043995630,21cyclictest4947-21snmpd22:17:020
19043995529,22cyclictest4947-21snmpd21:56:570
19043995528,23cyclictest30540-21telnet19:40:160
19043995326,22cyclictest4947-21snmpd22:06:590
19043995229,14cyclictest28938-21apt-get21:05:130
19043995032,12cyclictest21051-21ntp_states23:40:310
1904399496,36cyclictest27560-21apt-get00:00:110
19043994924,21cyclictest5050-21/usr/sbin/munin00:25:350
1904399487,19cyclictest14902-21apt-get23:25:140
19043994832,10cyclictest2686-21seq19:50:380
1904399483,11cyclictest6332-21python320:00:430
19043994831,11cyclictest29269-21ntp_states19:35:300
1904399482,40cyclictest25331-21/usr/sbin/munin20:55:300
19043994823,20cyclictest4947-21snmpd20:05:380
93582472,8sleep09443-21ps00:35:340
1904399477,18cyclictest29345-21apt-get00:05:110
1904399477,17cyclictest24991-21apt-get19:25:120
1904399477,16cyclictest9121-21apt-get20:10:120
1904399476,31cyclictest31132-21apt-get22:40:120
19043994730,12cyclictest25685-21apt-get22:25:120
19043994722,21cyclictest20093-21telnet20:40:140
1904399472,15cyclictest507-21runrttasks19:22:460
19043994721,21cyclictest4947-21snmpd19:56:330
19043994721,21cyclictest26775-21/usr/sbin/munin19:30:250
19043994720,24cyclictest0-21swapper/022:57:260
1904399465,34cyclictest23871-21diskstats20:50:200
1904399465,33cyclictest21754-21apt-get20:45:130
1904399465,19cyclictest7326-21apt-get21:35:130
1904399462,37cyclictest18797-21ntp_states20:35:320
1904399462,16cyclictest990-21runrttasks21:15:380
19043994620,23cyclictest0-21swapper/023:36:460
19043994620,23cyclictest0-21swapper/022:11:070
19043994620,23cyclictest0-21swapper/019:47:070
19043994620,22cyclictest10906-21/usr/sbin/munin20:15:340
19043994620,21cyclictest4947-21snmpd21:51:570
19043994618,23cyclictest7736-21telnet23:05:140
1904399459,32cyclictest25077-21runrttasks23:51:030
1904399456,16cyclictest19120-21apt-get19:10:140
1904399453,37cyclictest6205-21df_inode23:00:200
19043994529,10cyclictest15761-21sshd20:26:490
19043994527,12cyclictest22136-21apt-get23:45:090
1904399452,38cyclictest1142-21apt-get00:15:140
19043994520,20cyclictest30776-21/usr/sbin/munin21:10:120
1904399443,37cyclictest8391-21runrttasks00:34:160
1904399442,37cyclictest13110-21/usr/sbin/munin23:20:250
167722442,37sleep016834-21aten2.4_r3power23:30:140
1904399436,27cyclictest12727-21apt-get20:20:110
1904399433,34cyclictest2275-21/usr/sbin/munin22:50:360
19043994316,18cyclictest5862-21cat21:30:190
19043994227,11cyclictest14-21ksoftirqd/021:20:230
1904399403,31cyclictest9630-21irqstats21:40:220
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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