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2024-05-03 - 23:02
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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 Fri May 03, 2024 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1709021270,6chrt16654-21apt-get10:25:090
94642910,4chrt9465-21df08:35:220
37732910,4chrt3768-21grep11:15:360
149082840,4chrt14906-21df08:50:190
1037228416,28sleep00-21swapper/007:06:090
286112790,5chrt28610-21/usr/sbin/munin07:55:240
138632790,5chrt13858-21grep08:45:380
303672770,4sleep030362-21grep09:30:390
299372760,4chrt29938-21apt-config12:30:050
250362760,5chrt25037-21ntp_states10:45:320
203072760,5chrt20305-21df_inode09:05:200
259142740,4chrt25913-21interrupts09:20:220
125012740,5chrt12499-21pluginstate11:40:320
1100299616,43cyclictest2369-21apt-get09:45:110
1100299578,40cyclictest13188-21apt-get10:15:100
11002995529,16cyclictest9558-21apt-get10:05:130
1100299536,14cyclictest1207-21apt-get08:10:110
11002995137,9cyclictest13350-21apt-get07:15:130
1100299508,19cyclictest22830-21apt-get07:40:110
11002995033,11cyclictest31506-21apt-get11:05:130
11002995026,20cyclictest4947-21snmpd09:39:520
273512492,14sleep027458-21awk07:50:350
257192495,39sleep025727-21vmstat07:45:430
182342490,4sleep018237-21aten2.4_r3power09:00:160
1100299497,19cyclictest23659-21apt-get09:15:110
1100299494,37cyclictest11826-21python308:40:320
1100299487,19cyclictest22570-21apt-get12:10:100
1100299486,15cyclictest31843-21apt-get12:35:090
1100299483,40cyclictest7403-21users11:25:410
11002994832,10cyclictest22055-21runrttasks07:36:360
1100299482,40cyclictest30775-21unixbench_singl11:00:410
11002994823,15cyclictest4162-21apt-get09:50:120
1100299478,17cyclictest11399-21apt-get10:10:110
1100299477,17cyclictest15007-21apt-get10:20:130
1100299474,11cyclictest8929-21python311:30:330
11002994732,10cyclictest2995-21/usr/sbin/munin08:15:190
11002994731,11cyclictest4554-21telnet11:20:140
1100299472,41cyclictest17748-21seq08:57:490
1100299472,40cyclictest26893-21sh12:20:350
1100299472,40cyclictest11932-21ls07:10:320
11002994719,20cyclictest8100-21cat10:00:210
1100299467,17cyclictest15158-21apt-get07:20:120
1100299466,17cyclictest575-21apt-get09:40:110
1100299466,17cyclictest18885-21apt-get10:30:110
1100299464,37cyclictest24697-21diskstats12:15:230
1100299463,37cyclictest17591-21df07:25:280
1100299463,36cyclictest20678-21apt-get10:35:120
11002994620,23cyclictest0-21swapper/012:29:090
1100299456,15cyclictest13552-21apt-get11:45:120
1100299452,14cyclictest16236-21cat11:50:380
1100299447,17cyclictest20731-21apt-get12:05:140
1100299447,16cyclictest31802-21apt-get08:05:120
1100299444,35cyclictest19041-21/usr/sbin/munin07:30:570
1100299443,31cyclictest26663-21memory10:50:320
11002994430,9cyclictest17127-21/usr/sbin/munin11:55:240
1100299442,37cyclictest23694-21chrt10:41:040
1100299442,36cyclictest4947-21snmpd08:23:420
11002994418,22cyclictest27911-21/usr/sbin/munin10:55:330
11002994328,11cyclictest14-21ksoftirqd/012:00:150
1100299432,35cyclictest1058-21aten2.4_r3power11:10:150
11002994320,19cyclictest7335-21/usr/sbin/munin08:30:120
11002994129,7cyclictest4947-21snmpd09:13:530
11002994126,10cyclictest6649-21ntp_states09:55:290
1100299412,35cyclictest11646-21latency_hist11:40:010
1100299412,12cyclictest6910-21runrttasks08:27:420
1100299403,32cyclictest27972-21ntp_states09:25:320
1100299395,25cyclictest30014-21apt-get08:00:110
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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