You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-10-17 - 14:47

Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz, Linux 3.12.31-rt45 (Profile)

Latency plot of system in rack #3, slot #3
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 -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 20 highest latencies:
System rack3slot3.osadl.org (updated Sun Oct 17, 2021 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30822210896sleep30-21swapper/306:47:075
30822210896sleep30-21swapper/306:47:075
423850980irq/52-eth0-rx-0-21swapper/806:51:3110
423850980irq/52-eth0-rx-0-21swapper/806:51:3110
423850980irq/52-eth0-rx-0-21swapper/206:47:414
423850980irq/52-eth0-rx-0-21swapper/206:47:414
151829690sleep40-21swapper/406:51:336
151829690sleep40-21swapper/406:51:336
423850900irq/52-eth0-rx-0-21swapper/1106:47:523
423850900irq/52-eth0-rx-0-21swapper/1106:47:523
423850900irq/52-eth0-rx-0-21swapper/106:48:591
423850900irq/52-eth0-rx-0-21swapper/106:48:591
131528374sleep90-21swapper/906:49:3711
131528374sleep90-21swapper/906:49:3711
118627059sleep50-21swapper/506:47:577
118627059sleep50-21swapper/506:47:577
143826758sleep100-21swapper/1006:50:272
143826758sleep100-21swapper/1006:50:272
133826654sleep00-21swapper/006:49:520
133826654sleep00-21swapper/006:49:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional