You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-10-24 - 02:04

Intel(R) Celeron(R) CPU G3900 @ 2.80GHz, Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #c, slot #2
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 -Sp99 -i200 -h200 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackcslot2.osadl.org (updated Fri Oct 15, 2021 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2140727057,8sleep10-21swapper/107:02:151
2151026754,8sleep00-21swapper/007:03:190
21989992012,8cyclictest7-21ksoftirqd/012:06:460
21990991816,1cyclictest8620-21ls09:11:421
21990991816,1cyclictest10549-21ssh11:23:391
21989991715,1cyclictest8680-21ls09:11:420
21990991615,1cyclictest15934-21hddtemp_smartct09:21:391
21989991616,0cyclictest6642-21sshd10:35:410
21989991615,1cyclictest3915-21ssh11:15:280
21989991615,1cyclictest30136-21ssh11:50:490
21989991610,6cyclictest0-21swapper/011:39:470
21989991610,6cyclictest0-21swapper/011:19:430
21990991515,0cyclictest0-21swapper/112:31:081
21990991515,0cyclictest0-21swapper/108:09:421
21990991514,1cyclictest3724-21ssh11:15:041
21990991514,1cyclictest0-21swapper/111:52:231
21990991513,1cyclictest22069-21ssh09:29:591
21990991512,3cyclictest0-21swapper/107:38:521
21990991510,5cyclictest0-21swapper/111:44:221
21990991510,5cyclictest0-21swapper/111:26:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional