You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-12-04 - 23:24

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #1, slot #2

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.4.229-rt200 (Profile)

Latency plot of shadow 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 20 highest latencies:
System rack1slot2s.osadl.org (updated Sun Dec 04, 2022 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1841023626,0sleep20-21swapper/207:04:092
295750350,0irq/25-eth10-21swapper/307:03:593
1867423425,0sleep10-21swapper/107:07:121
1852123026,0sleep00-21swapper/007:05:270
339960,0migration/327974-21sh09:52:233
339960,0migration/327682-21sh11:07:403
339960,0migration/325046-21sh10:46:113
339960,0migration/325046-21sh10:46:113
339960,0migration/316931-21sh12:14:223
339960,0migration/313068-21sh10:02:473
28855060,0irq/27-eth0-tx-19662-21munin-node07:33:160
28855060,0irq/27-eth0-tx-0-21swapper/211:05:512
28845060,0irq/26-eth0-rx-30779-21kthreadcore08:28:133
28845060,0irq/26-eth0-rx-25942-21munin-node07:58:153
27160,0ktimersoftd/215732-21diskmemload12:18:232
187999966,0cyclictest0-21swapper/209:42:372
187999965,0cyclictest20465-21perl09:48:082
187999960,0cyclictest0-21swapper/210:15:242
187999960,0cyclictest0-21swapper/209:56:202
149960,0migration/032283-21sh12:04:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional