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2022-05-21 - 11:08

x86 Intel Celeron M @1500 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -n -a0 -t1 -p99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100, highest latencies:
System rack6slot5.osadl.org (updated Fri May 20, 2022 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20989997605284,4473cyclictest18214-21kworker/0:219:12:070
19892776185,201sleep00-21swapper19:09:460
20989952533,476cyclictest9124-21ntp_states23:15:170
20989949536,217cyclictest14721-21diskmemload23:49:060
20989949249,258cyclictest11-21ksoftirqd/000:35:220
20989948834,439cyclictest30596-21ssh21:41:560
20989948634,438cyclictest4769-21strings20:40:400
20989948532,439cyclictest13732-21ssh00:31:560
20989948038,429cyclictest28576-21ssh22:46:430
20989947432,382cyclictest26713-21munin-node21:36:090
20989946731,366cyclictest23588-21chrt22:36:220
20989946724,382cyclictest12-21rcu_preempt21:10:270
20989946433,370cyclictest13-21rcuc/023:20:240
20989946231,370cyclictest6377-21ntp_states22:00:190
20989945932,358cyclictest1059-21ssh22:57:350
20989944670,312cyclictest14721-21diskmemload23:02:170
20989944533,352cyclictest14721-21diskmemload21:32:450
20989943730,345cyclictest4915-21runrttasks20:16:370
20989943024,223cyclictest14721-21diskmemload22:26:250
20989942350,358cyclictest26871-21cron20:15:020
20989942053,306cyclictest16602-21ssh22:20:560
20989941947,358cyclictest9286-21ssh00:23:080
20989941652,304cyclictest20379-21ssh23:38:320
20989941551,349cyclictest1545-21sshd21:50:230
20989941433,368cyclictest4747-21ssh21:55:590
20989941354,345cyclictest11249-21ssh22:10:260
20989941354,343cyclictest4531-21munin-node23:05:270
20989941333,380cyclictest0-21swapper20:29:360
20989941231,368cyclictest4915-21runrttasks20:33:480
20989941138,350cyclictest9881-21rm00:25:130
20989940733,360cyclictest20425-21copy22:30:340
20989940655,112cyclictest4319-21snmpd23:55:500
20989940630,362cyclictest21446-21ssh23:40:390
20989940454,109cyclictest18760-21apt-get21:17:030
20989940453,168cyclictest12882-21ls21:05:020
20989940433,356cyclictest15204-21ssh22:18:240
20989940340,349cyclictest21786-21ssh21:24:520
20989940333,356cyclictest4376-21ssh00:12:240
20989940149,338cyclictest8984-21ssh22:05:310
20989940052,288cyclictest14721-21diskmemload00:17:400
20989939952,288cyclictest14721-21diskmemload21:49:490
20989939855,283cyclictest14721-21diskmemload22:51:420
20989939631,350cyclictest13752-21ssh23:25:100
20989939534,348cyclictest25079-21ssh22:40:320
20989939323,309cyclictest13341-21awk21:05:270
20989939321,312cyclictest8191-21kworker/0:121:30:050
20989939231,347cyclictest8460-21ssh23:13:140
20989939231,301cyclictest17138-21rm23:31:050
20989939222,370cyclictest0-21swapper20:23:160
20989938934,341cyclictest8208-21strings20:51:010
20989938931,342cyclictest23859-21unixbench_singl20:05:330
20989938835,340cyclictest27750-21ssh23:54:350
20989938734,340cyclictest32547-21ssh00:04:470
20989938734,339cyclictest22203-21strings20:00:400
20989938734,339cyclictest1809-21ssh00:07:010
20989938732,340cyclictest16622-21strings19:45:420
20989938633,340cyclictest11035-21strings19:30:410
20989938333,281cyclictest10226-21sed20:55:510
20989938135,287cyclictest3349-21seq20:36:430
20989937735,282cyclictest13983-21munin-node19:40:500
20989937674,242cyclictest12739-21runrttasks19:35:320
20989937634,283cyclictest6205-21munin-node20:45:260
20989937332,103cyclictest6639-21ntp_states19:20:170
20989937033,276cyclictest4239-21lldpd19:17:420
20989936735,150cyclictest18871-21expr19:51:020
20989936358,289cyclictest8619-21perl19:25:200
20989935550,291cyclictest4300-21lldpd19:58:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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