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2024-04-21 - 04:20
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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 all highest latencies:
System rack3slot6.osadl.org (updated Sun Apr 21, 2024 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1097121190,4chrt10972-21latency_hist19:10:020
320922910,4chrt32070-21cpu20:05:170
145572820,4chrt14555-21df20:45:170
315882780,4chrt31586-21memory21:30:260
222892760,5chrt22288-21ls22:35:010
1092799726,54cyclictest13281-21apt-get19:15:130
1092799698,49cyclictest1310-21apt-get20:10:110
1092799616,45cyclictest11003-21apt-get19:10:130
10927995832,22cyclictest4947-21snmpd19:21:070
137462570,4sleep013745-21cpuspeed_turbos23:40:140
10927995722,31cyclictest31465-21/usr/sbin/munin23:00:270
1092799547,14cyclictest27865-21apt-get22:50:110
10927995331,18cyclictest4947-21snmpd21:50:500
10927995230,18cyclictest4947-21snmpd21:28:510
10927995226,22cyclictest4947-21snmpd21:36:350
1092799518,20cyclictest26753-21apt-get00:15:120
1092799503,41cyclictest30107-21irqstats22:55:230
239822492,42sleep024071-21cat00:05:370
1092799488,17cyclictest18426-21apt-get20:55:150
1092799487,19cyclictest32150-21apt-get00:30:150
1092799483,38cyclictest9509-21apt-get22:00:140
10927994823,20cyclictest23755-21sshd19:40:510
10927994818,21cyclictest21381-21cat00:00:250
1092799474,33cyclictest30935-21python320:00:340
1092799473,39cyclictest7090-21python323:20:330
1092799473,37cyclictest3713-21unixbench_singl23:10:370
1092799472,41cyclictest27673-21runrttasks19:53:390
10927994721,22cyclictest4063-21/usr/sbin/munin21:45:340
1092799466,30cyclictest11605-21apt-get22:05:150
1092799465,31cyclictest16333-21apt-get20:50:200
10927994635,7cyclictest7382-21ntpq20:25:280
1092799463,39cyclictest17384-21apt-get23:50:130
1092799463,38cyclictest17384-21diskstats22:20:220
1092799463,37cyclictest19876-21ntp_states23:55:310
1092799463,10cyclictest271122chrt21:18:320
10927994629,12cyclictest5875-21grep20:20:340
1092799462,40cyclictest2874-21grep21:40:290
10927994619,19cyclictest13785-21cat22:10:210
253662450,4sleep025365-21uptime22:40:360
1092799457,29cyclictest17183-21apt-get19:25:110
1092799454,35cyclictest5150-21ntp_states23:15:290
1092799454,33cyclictest21096-21diskstats19:35:200
1092799454,10cyclictest24196-21diskstats21:10:220
1092799453,37cyclictest15991-21ntp_states23:45:280
1092799453,15cyclictest4327-21runrttasks20:16:410
10927994531,10cyclictest28568-21apt-get00:20:130
10927994530,11cyclictest11647-21/usr/sbin/munin23:35:380
10927994528,11cyclictest10669-21telnet20:35:210
10927994520,21cyclictest15235-21/usr/sbin/munin22:15:260
10927994519,23cyclictest0-21swapper/000:12:270
1092799448,15cyclictest22021-21apt-get21:05:110
1092799447,15cyclictest1500-21apt-get00:35:120
1092799446,15cyclictest7692-21apt-get21:55:110
1092799443,35cyclictest26776-21ntp_states22:45:300
10927994428,13cyclictest14-21ksoftirqd/023:30:160
10927994425,13cyclictest4947-21snmpd00:27:380
10927994424,15cyclictest28316-21df_inode19:55:190
1092799442,36cyclictest18974-21/usr/sbin/munin19:30:300
10927994411,29cyclictest24425-21/usr/sbin/munin19:45:310
10927994332,7cyclictest20903-21ntpq21:00:250
10927994329,9cyclictest12783-21diskstats20:40:200
1092799432,36cyclictest2155-21chrt23:07:300
1092799423,34cyclictest27467-21/usr/sbin/munin21:20:250
1092799422,35cyclictest18842-21/usr/sbin/munin22:25:160
1092799414,32cyclictest23238-21python322:35:320
1092799413,32cyclictest8808-21/usr/sbin/munin20:30:190
10927994024,12cyclictest14-21ksoftirqd/023:27:560
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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