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2024-07-25 - 12:35
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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 Thu Jul 25, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3023821240,4chrt30236-21sendmail-msp22:40:010
3018421230,4chrt29911-21diskmemload21:10:280
2149421220,4chrt21492-21kernelversion22:15:260
2509521110,4chrt25074-21kernelversion20:55:240
246332910,4chrt24628-21aten2.4_r3power22:25:120
1807229115,37sleep00-21swapper/019:08:450
161272900,4chrt16118-21latency22:00:270
121432900,5chrt12137-21if_err_enp2s020:20:230
186012890,4chrt18585-21missed_timers23:35:240
139642880,5chrt13965-21aten2.4_r3power21:55:180
46792860,4chrt4669-21cpu20:00:170
269882780,5chrt26975-21apache200:00:030
192512780,5chrt18794-21apt-get20:40:110
49982770,4chrt4996-21sed23:00:010
82972640,4sleep08298-21basename21:40:010
1837899583,46cyclictest897-21apt-get19:50:130
18378995832,15cyclictest22826-21apt-get20:50:130
1837899524,8cyclictest21054-21diskstats19:15:200
1837899512,43cyclictest9798-21chrt23:10:320
1837899512,40cyclictest10631-21if_enp3s021:45:250
1837899502,42cyclictest21542-21seq23:44:570
18378994931,13cyclictest4113-21seq19:58:150
1837899492,41cyclictest16962-21sh23:30:280
18378994921,20cyclictest30702-21cat22:40:190
18378994911,15cyclictest14-21ksoftirqd/023:45:100
1837899488,19cyclictest5407-21apt-get23:00:210
1837899484,38cyclictest24303-21python323:50:310
1837899482,41cyclictest15278-21runrttasks23:25:290
1837899475,37cyclictest553-21seq00:25:220
1837899473,39cyclictest14321-21python320:25:300
1837899473,37cyclictest31189-21apt-get00:20:110
1837899473,37cyclictest2146-21sshd00:36:190
1837899473,16cyclictest507-21runrttasks22:20:390
18378994731,11cyclictest21034-21/usr/sbin/munin20:45:300
18378994731,11cyclictest10871-21/usr/sbin/munin23:15:200
1837899472,40cyclictest8441-21apt-get21:40:100
18378994720,18cyclictest26713-21apt-get22:30:210
1837899467,16cyclictest12681-21apt-get23:20:100
1837899463,38cyclictest30458-21ntp_states19:40:290
1837899463,38cyclictest26550-21irqstats19:30:200
18378994631,10cyclictest4463-21seq21:28:310
18378994625,16cyclictest12240-21ls21:50:180
18378994617,19cyclictest17091-21apt-get20:35:140
1837899457,16cyclictest18453-21apt-get19:10:130
1837899456,17cyclictest4800-21apt-get21:30:140
1837899453,36cyclictest27509-21users21:00:370
18378994526,14cyclictest8394-21runrttasks23:05:590
1837899452,38cyclictest1993-21processes21:20:330
18378994518,18cyclictest27456-21cat00:00:210
18378994517,19cyclictest17397-21apt-get22:05:120
18378994515,12cyclictest14-21ksoftirqd/019:20:140
1837899447,17cyclictest19238-21apt-get22:10:120
1837899443,36cyclictest24852-21memory19:25:220
18378994430,10cyclictest15676-21if_enp3s020:30:180
1837899442,36cyclictest9913-21apt-get20:15:130
18378994419,22cyclictest0-21swapper/021:18:080
18378994419,17cyclictest8125-21apt-get20:10:120
1837899434,34cyclictest1504-21apt-get22:50:120
1837899432,36cyclictest31550-21apt-get19:45:120
1837899432,34cyclictest305212sleep000:15:590
1837899432,12cyclictest32571-21if_err_enp3s022:45:200
18378994314,19cyclictest28212-21apt-get21:05:150
18378994125,10cyclictest28717-21python319:35:310
1837899412,33cyclictest6321-21aten2.4_r3power20:05:130
1837899402,17cyclictest29032-21chrt00:06:140
1837899373,29cyclictest1290-21sshd00:30:210
18378993720,12cyclictest29871-21chrt00:11:390
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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