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2022-06-27 - 17:14

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 50 highest latencies:
System rack6slot5.osadl.org (updated Mon Jun 27, 2022 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205219998185286,4529cyclictest22186-21kworker/0:107:11:530
201532608182,203sleep00-21swapper07:07:380
205219948734,439cyclictest1340-21diskmemload12:20:320
205219948734,439cyclictest1340-21diskmemload10:10:290
205219948632,440cyclictest1340-21diskmemload10:49:050
205219948632,440cyclictest1340-21diskmemload10:22:550
205219948533,438cyclictest1340-21diskmemload09:43:130
205219948532,439cyclictest1340-21diskmemload11:48:120
205219948532,439cyclictest1340-21diskmemload09:56:350
205219948338,431cyclictest4915-21runrttasks11:22:400
205219948332,437cyclictest1340-21diskmemload12:11:450
205219947336,376cyclictest29202-21iostat07:30:330
205219947131,427cyclictest16304-21ssh12:06:400
205219946734,372cyclictest12188-21ssh11:56:320
205219946631,374cyclictest1340-21diskmemload10:26:360
205219946532,372cyclictest3103-21ssh09:12:380
205219945831,357cyclictest26143-21ssh10:05:190
205219945718,87cyclictest18657-21hddtemp_smartct09:46:260
205219945332,360cyclictest1340-21diskmemload10:31:460
205219942324,88cyclictest29482sleep011:36:290
205219942057,339cyclictest8979-31updatedb.mlocat08:02:310
205219941020,376cyclictest20562-21ssh11:05:130
205219941016,380cyclictest17685-21runrttasks10:58:030
205219940834,360cyclictest10002-21ssh11:51:330
205219940831,363cyclictest24693-21ntp_states08:45:180
205219940735,358cyclictest19957-21ssh12:15:400
205219940729,195cyclictest13888-21ssh09:36:050
205219940635,357cyclictest1340-21diskmemload11:03:400
205219940633,359cyclictest25712-21ssh12:27:540
205219940533,359cyclictest9995-21ssh09:27:270
205219940332,357cyclictest21752-21ssh09:54:190
205219940233,354cyclictest1340-21diskmemload11:11:450
205219940134,353cyclictest31595-21ssh11:29:210
205219940130,357cyclictest1340-21diskmemload11:19:210
205219940016,87cyclictest4319-21snmpd12:31:590
205219939932,352cyclictest1854-21ntp_states07:45:190
205219939932,352cyclictest11619-21munin-node08:10:160
205219939816,312cyclictest1340-21diskmemload09:10:020
205219939632,349cyclictest24804-21ssh10:01:070
205219939631,350cyclictest9735-21ssh10:40:170
205219939532,349cyclictest27167-21munin-node07:25:270
205219939239,339cyclictest14342-21ssh10:50:310
205219939232,344cyclictest6165-21tr09:20:140
205219939161,268cyclictest17159-21grep08:25:120
205219939131,347cyclictest144622sleep012:03:200
205219939034,342cyclictest5880-21chrt11:43:210
205219938961,268cyclictest1340-21diskmemload10:38:590
205219938959,269cyclictest30502-21mailstats07:35:140
205219938934,340cyclictest1340-21diskmemload09:16:430
205219938860,259cyclictest19824-21if_err_eth008:30:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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