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2021-09-28 - 09:52

VIA Samuel 2, Linux 3.18.9-rt4 (Profile)

Latency plot of system in rack #3, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -n -a0 -t1 -p98 -i200 -h1000 -q
Total number of samples: 100 million
Resolution of latency scale: reduced 
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack3slot7.osadl.org (updated Tue Sep 28, 2021 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3140140ksoftirqd/019827-21kworker/0:018:58:550
14991400watchdog/014027-21df_inode23:48:550
14991330watchdog/017748-21munin-node20:23:590
14991320watchdog/022697-21aten_r3power_cu00:18:400
14991300watchdog/014342-21mailstats20:13:430
14991290watchdog/030926-21runrttasks22:57:190
14991260watchdog/020045-21cstates22:19:030
14991250watchdog/08536-21cstates23:29:070
14991230watchdog/03353-21runrttasks19:15:110
14991230watchdog/018297-21sort00:03:470
14991220watchdog/025295-21awk20:48:590
14991210watchdog/09941-21latency23:34:070
14991210watchdog/027508-21df19:08:510
14991200watchdog/03353-21runrttasks19:49:030
14991190watchdog/020977-21aten_r3power_vo22:23:510
14991180watchdog/07635-21grep21:38:510
14991160watchdog/03353-21runrttasks21:59:310
14991160watchdog/029408-21awk21:03:510
14991160watchdog/019991-21df_inode00:08:560
14991140watchdog/09637-21seq19:57:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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