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2021-01-19 - 05:27

Intel(R) Xeon(R) CPU E3-1270 V2 @ 3.50GHz, Linux 4.4.229-rt200 (Profile)

Latency plot of system in rack #1, 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 -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 50 highest latencies:
System rack1slot2.osadl.org (updated Tue Jan 19, 2021 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291450470,0irq/31-eth10-21swapper/119:08:041
1680423725,0sleep20-21swapper/219:08:252
1703123524,0sleep00-21swapper/019:11:030
1690123526,0sleep30-21swapper/319:09:343
4160,0ktimersoftd/00-21swapper/000:24:060
28425060,0irq/33-eth0-tx-30583-21munin-node19:42:580
28415060,0irq/32-eth0-rx-0-21swapper/300:25:023
27160,0ktimersoftd/210896-21diskmemload00:24:062
172479966,0cyclictest0-21swapper/322:13:333
172479960,0cyclictest0-21swapper/323:03:513
172479960,0cyclictest0-21swapper/321:55:443
149960,0migration/06617-21sh22:18:520
35150,0ktimersoftd/30-21swapper/322:48:333
339950,0migration/332424-21munin-node00:02:593
339950,0migration/325453-21sh23:20:533
329950,0watchdog/320134-21yum21:58:103
329950,0watchdog/318873-21sh21:21:063
28425050,0irq/33-eth0-tx-5562-21taskset23:33:192
28425050,0irq/33-eth0-tx-24903-21ssh22:03:272
28425050,0irq/33-eth0-tx-22061-21ssh22:39:002
28425050,0irq/33-eth0-tx-20233-21diskstats21:22:522
28425050,0irq/33-eth0-tx-14835-21ssh00:18:192
28425050,0irq/33-eth0-tx-0-21swapper/223:21:412
28425050,0irq/33-eth0-tx-0-21swapper/223:16:182
28425050,0irq/33-eth0-tx-0-21swapper/223:11:202
28425050,0irq/33-eth0-tx-0-21swapper/222:49:202
28425050,0irq/33-eth0-tx-0-21swapper/222:01:252
28425050,0irq/33-eth0-tx-0-21swapper/221:55:032
28425050,0irq/33-eth0-tx-0-21swapper/221:49:272
28425050,0irq/33-eth0-tx-0-21swapper/200:35:522
28425050,0irq/33-eth0-tx-0-21swapper/200:02:042
28425050,0irq/33-eth0-tx-0-21swapper/020:57:570
28425050,0irq/33-eth0-tx-0-21swapper/019:57:580
28425050,0irq/33-eth0-tx-0-21swapper/019:53:000
28415050,0irq/32-eth0-rx-9154-21if_err_eth100:13:073
28415050,0irq/32-eth0-rx-643-21munin-node23:28:073
28415050,0irq/32-eth0-rx-27338-21perl23:22:533
259950,0migration/26786-21taskset22:19:152
259950,0migration/25758-21sh00:08:352
259950,0migration/25442-21munin-node20:58:062
259950,0migration/231690-21munin-node23:27:542
259950,0migration/229490-21sh22:08:212
259950,0migration/218854-21sh21:21:032
19150,0ktimersoftd/10-21swapper/100:24:061
172479955,0cyclictest0-21swapper/323:57:083
172479955,0cyclictest0-21swapper/323:57:083
172479955,0cyclictest0-21swapper/323:39:103
172479955,0cyclictest0-21swapper/322:30:353
172479955,0cyclictest0-21swapper/321:31:083
172479955,0cyclictest0-21swapper/320:08:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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