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2024-04-25 - 06:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #7

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot7s.osadl.org (updated Thu Apr 25, 2024 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
203752144718,1411sleep120376-21ntp_states21:21:501
1035529088,888sleep210401-21ntpq22:31:442
20050284417,808sleep020124-21/usr/sbin/munin19:37:000
13968261144,555sleep214014-21ntpq00:26:422
7416246241,367sleep27444-21fschecks_count00:06:382
7416246241,367sleep27444-21fschecks_count00:06:382
324342304100,158sleep232632-21latency_hist22:01:202
7879227625,179sleep27938-21apt-config22:26:192
7879227625,179sleep27938-21apt-config22:26:192
22649225796,60sleep20-21swapper/223:11:342
30130223840,128sleep230164-21sh23:36:172
20347222817,143sleep220424-21unixbench_singl23:01:492
17753222423,70sleep20-21swapper/222:56:192
17753222423,70sleep20-21swapper/222:56:192
14417222029,178sleep214481-21sendmail-msp19:16:192
14417222029,178sleep214481-21sendmail-msp19:16:192
5248221893,70sleep25280-21sort22:16:382
12788221615,44sleep20-21swapper/219:06:502
20738221419,179sleep120862-21cat19:41:221
10902221412,143sleep20-21swapper/220:51:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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