You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2024-04-25 - 12:55
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack1slot2.osadl.org (updated Thu Apr 25, 2024 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2343424130,0sleep20-21swapper/218:51:232
2343023728,0sleep30-21swapper/318:51:203
2358423526,0sleep10-21swapper/118:53:061
2354423127,0sleep00-21swapper/018:52:410
23789992121,0cyclictest23871-21snmpd21:39:050
29925070,0irq/32-eth0-rx-0-21swapper/323:21:593
339960,0migration/37405-21sh23:39:283
339960,0migration/3454-21sh00:12:343
339960,0migration/326652-21kthreadcore21:00:063
339960,0migration/326198-21sh22:51:263
339960,0migration/325981-21irqcore23:50:023
339960,0migration/317759-21sh21:30:473
329960,0watchdog/37877-21diskstats19:14:523
329960,0watchdog/313748-21perl21:50:003
29935060,0irq/33-eth0-tx-12015-21munin-node20:30:110
237909960,0cyclictest26063-21munin-node21:20:011
237909960,0cyclictest0-21swapper/122:25:551
149960,0migration/027283-21munin-node23:10:070
149960,0migration/011258-21kthreadcore19:14:590
339950,0migration/38387-21switchtime22:40:123
339950,0migration/34714-21kthreadcore21:05:013
339950,0migration/34018-21cpu22:59:563
339950,0migration/332744-21kthreadcore23:15:013
339950,0migration/33236-21kthreadcore00:15:013
339950,0migration/330794-21kthreadcore22:35:043
339950,0migration/329724-21kthreadcore21:40:033
339950,0migration/326455-21cpuspeed_turbos19:54:563
339950,0migration/324604-21latency_hist23:49:433
339950,0migration/324425-21kthreadcore20:15:093
339950,0migration/322321-21kthreadcore21:15:073
339950,0migration/317678-21cpuspeed_turbos00:04:573
339950,0migration/31707-21fschecks_time19:59:593
339950,0migration/315239-21aten_r1power_en22:09:553
339950,0migration/313348-21kthreadcore20:50:063
339950,0migration/312874-21latency_hist21:49:433
339950,0migration/311867-21aten2.4-expect19:44:573
339950,0migration/31085-21sh21:22:163
339950,0migration/31015-21munin-node22:20:003
329950,0watchdog/39684-21diskstats23:59:593
329950,0watchdog/313598-21ps20:30:043
329950,0watchdog/30-21swapper/323:10:113
29935050,0irq/33-eth0-tx-8338-21munin-node20:05:160
29935050,0irq/33-eth0-tx-26460-21munin-node20:40:060
29935050,0irq/33-eth0-tx-0-21swapper/019:35:120
29935050,0irq/33-eth0-tx-0-21swapper/018:58:350
29925050,0irq/32-eth0-rx-9008-21iostat_ios23:40:023
29925050,0irq/32-eth0-rx-30413-21chrt23:32:293
29925050,0irq/32-eth0-rx-22238-21sshd20:11:483
29925050,0irq/32-eth0-rx-16287-21ssh21:12:033
29925050,0irq/32-eth0-rx-14939-21fschecks_count23:24:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional