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2023-06-04 - 21:42

x86 Intel Xeon E3-1220L V2 @2300 MHz, 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 -n -a -t3 -p99 -i200 -h400 -q
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 Sun Jun 04, 2023 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28015090,0irq/29-eth0-tx-0-21swapper/006:07:040
259990,0migration/220519-21ntp_kernel_pll_06:07:082
28005080,0irq/28-eth0-rx-6111-21avahi-daemon06:07:333
179980,0migration/118075-21kthreadcore06:07:051
8315060,0irq/26-0000:00:6238-21python08:12:232
339960,0migration/37756-21kthreadcore08:52:093
339960,0migration/3591-21munin-node11:12:103
339960,0migration/33752-21sh08:50:453
339960,0migration/332222-21cpuspeed_turbos10:37:013
339960,0migration/330925-21munin-node08:07:103
339960,0migration/329403-21timerandwakeup09:57:203
339960,0migration/319178-21sh08:41:373
339960,0migration/318852-21munin-node11:22:013
28015060,0irq/29-eth0-tx-17747-21munin-node08:02:060
28005060,0irq/28-eth0-rx-842-21ssh08:29:233
28005060,0irq/28-eth0-rx-31979-21grep10:52:073
28005060,0irq/28-eth0-rx-29681-21seq11:08:033
28005060,0irq/28-eth0-rx-29050-21awk09:42:093
28005060,0irq/28-eth0-rx-23903-21munin-run09:21:433
28005060,0irq/28-eth0-rx-18379-21cut08:22:103
28005060,0irq/28-eth0-rx-10762-21memory09:47:123
259960,0migration/28829-21aten2_r1power_v11:17:002
215769966,0cyclictest6312-21kworker/2:108:28:052
215769966,0cyclictest2431-21nvme07:53:492
215699960,0cyclictest6111-21avahi-daemon10:06:531
215699960,0cyclictest0-21swapper/111:17:121
215649960,0cyclictest6111-21avahi-daemon08:42:010
215649960,0cyclictest0-21swapper/010:00:040
215649960,0cyclictest0-21swapper/007:57:050
149960,0migration/07787-21fschecks_count06:47:010
149960,0migration/018223-21sh10:11:570
8315050,0irq/26-0000:00:6111-21avahi-daemon07:16:433
339950,0migration/38771-21kthreadcore09:12:093
339950,0migration/38552-21sh08:17:053
339950,0migration/38121-21munin-node07:32:063
339950,0migration/37568-21cpuspeed_turbos06:47:003
339950,0migration/36991-21kthreadcore06:22:073
339950,0migration/36872-21kthreadcore07:07:063
339950,0migration/33854-21fschecks_count07:52:043
339950,0migration/32584-21kthreadcore08:12:153
339950,0migration/325352-21munin-node06:37:003
339950,0migration/324767-21runrttasks06:33:253
339950,0migration/324644-21kthreadcore06:57:073
339950,0migration/319655-21kthreadcore08:02:083
339950,0migration/316983-21kthreadcore09:52:093
339950,0migration/316675-21munin-node07:12:113
339950,0migration/316555-21kthreadcore11:37:073
339950,0migration/315028-21fschecks_count06:51:593
339950,0migration/31452-21kthreadcore07:27:123
339950,0migration/314074-21fschecks_count10:27:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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