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2024-05-02 - 00:01
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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 Wed May 01, 2024 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1505921340,4chrt15061-21cstates08:05:190
806421140,4chrt8065-21if_err_enp2s009:15:260
2517021130,4chrt25166-21head11:30:290
25805991108,20cyclictest31062-21apt-get08:50:140
108882970,4chrt10886-21grep10:50:360
2580599837,19cyclictest9394-21apt-get07:50:130
175902800,5chrt17586-21grep09:40:260
174402760,4chrt17439-21smart_sda08:10:300
320872750,4chrt32066-21apt-get07:25:200
187752750,5chrt18774-21idleruntime08:15:260
146872750,4chrt14686-21cat08:05:010
291402740,4sleep029137-21grep07:15:390
2533327416,27sleep00-21swapper/007:07:250
263432640,4chrt26345-21uname07:10:250
25805996233,18cyclictest5818-21apt-get07:40:130
2580599577,16cyclictest7603-21apt-get07:45:100
2580599547,14cyclictest10245-21apt-get12:20:120
2580599526,38cyclictest29270-21apt-get08:45:130
25805995237,10cyclictest12240-21df10:55:270
49722510,4chrt4970-21wc12:05:160
25805995133,11cyclictest11595-21diskstats09:25:260
25805995119,23cyclictest6973-21cat12:10:190
25805995030,16cyclictest16626-21chrt11:05:440
2580599498,19cyclictest26338-21apt-get11:35:120
2580599494,38cyclictest27795-21df08:40:180
2580599493,42cyclictest24737-21missed_timers10:00:230
207972491,42sleep020870-21date11:20:020
25805994833,9cyclictest271852sleep010:06:250
25805994832,11cyclictest13828-21/usr/sbin/munin12:30:280
25805994815,27cyclictest16995-21sshd12:37:540
2580599478,17cyclictest28200-21apt-get11:40:120
2580599477,16cyclictest4374-21apt-get10:35:140
2580599475,34cyclictest1721-21apt-get07:30:230
2580599474,38cyclictest15377-21munin-run11:05:010
2580599473,38cyclictest29978-21apt-get07:20:140
2580599473,34cyclictest14-21ksoftirqd/012:00:100
25805994733,10cyclictest3809-21apt-get07:35:160
25805994717,21cyclictest1475-21cat11:55:180
237672470,4sleep023762-21grep11:25:370
2580599467,17cyclictest6231-21apt-get10:40:120
2580599467,16cyclictest20955-21apt-get11:20:110
2580599467,16cyclictest20579-21apt-get09:50:120
2580599463,38cyclictest743-21diskstats08:55:190
25805994630,11cyclictest13350-21/usr/sbin/munin09:30:190
25805994625,16cyclictest8189-21chrt10:45:140
2580599462,38cyclictest7239-21seq09:12:540
2580599462,15cyclictest30835-21chrt10:16:350
2580599457,16cyclictest25606-21apt-get08:35:110
2580599456,15cyclictest31430-21apt-get10:20:100
2580599454,9cyclictest11719-21memory07:55:260
2580599454,22cyclictest22024-21apt-get08:25:160
2580599453,36cyclictest18052-21ntp_states11:10:300
2580599453,14cyclictest1093-21cat11:55:020
2580599452,37cyclictest13468-21seq12:28:220
2580599447,16cyclictest15141-21apt-get09:35:120
2580599447,15cyclictest29996-21apt-get11:45:130
2580599443,10cyclictest4947-21snmpd09:48:030
25805994415,20cyclictest28167-21cat10:10:220
2580599436,15cyclictest2581-21apt-get10:30:120
2580599433,36cyclictest24352-21memory08:30:260
25805994228,9cyclictest9934-21runrttasks12:18:550
25805994221,15cyclictest507-21runrttasks09:05:160
2580599422,10cyclictest21888-21idleruntime-cro08:24:590
2580599417,15cyclictest2231-21apt-get09:00:140
2580599414,31cyclictest22368-21/usr/sbin/munin09:55:210
2580599412,11cyclictest20862sleep010:27:150
25805994114,19cyclictest9810-21cat09:20:230
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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