You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2022-01-23 - 10:12

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 10 highest latencies:
System rack3slot7.osadl.org (updated Sun Jan 23, 2022 00:43:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3140630ksoftirqd/017792-21kworker/0:219:05:210
324659821111cyclictest19057-21df_inode23:50:130
324659821014cyclictest29027-21df22:35:110
324659820914cyclictest15907-21munin-node23:40:050
324659820315cyclictest3557-21runrttasks22:32:340
324659820313cyclictest3557-21runrttasks20:08:540
324659820213cyclictest20644-21sendmail_mailqu22:05:270
324659820212cyclictest2667-21runrttasks19:16:080
324659820212cyclictest13983-21munin-node21:44:590
324659820212cyclictest10065-21nfs_client21:30:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional