You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-11-28 - 20:09
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 20 highest latencies:
System rack1slot2.osadl.org (updated Tue Nov 28, 2023 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1233928875,0sleep20-21swapper/207:02:012
1232327170,0sleep10-21swapper/107:01:481
12558996565,0cyclictest4400-21md0_resync08:55:541
1239225554,0sleep00-21swapper/007:02:350
1221323928,0sleep30-21swapper/307:00:333
12557993535,0cyclictest4399-21md1_resync08:55:540
12557991212,0cyclictest3536-21snmpd09:16:000
8315060,0irq/26-0000:00:8090-21munin-node12:29:113
8315060,0irq/26-0000:00:6386-21runrttasks08:34:143
8315060,0irq/26-0000:00:5668-21munin-node11:54:073
8315060,0irq/26-0000:00:5633-21ntpdc07:39:073
8315060,0irq/26-0000:00:4535-21perl10:04:023
8315060,0irq/26-0000:00:28674-21iostat_ios07:14:043
8315060,0irq/26-0000:00:24766-21ntp_kernel_pll_08:14:123
8315060,0irq/26-0000:00:21798-21ssh11:08:473
8315060,0irq/26-0000:00:19648-21chrt08:54:513
8315060,0irq/26-0000:00:19026-21df10:49:033
8315060,0irq/26-0000:00:17478-21iostat12:19:053
8315060,0irq/26-0000:00:0-21swapper/308:59:003
339960,0migration/38130-21irqcore07:44:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional