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2025-05-02 - 12:23

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 50 highest latencies:
System rackbslot7s.osadl.org (updated Fri May 02, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13990210208,1000sleep314026-21ntpq00:03:373
20205290310,882sleep022372-1kworker/0:0H00:23:410
9251269721,659sleep29286-21/usr/sbin/munin20:23:382
7771252013,493sleep17777-21ntpq20:18:401
5528233622,289sleep05613-21latency_hist20:13:140
13045229710,271sleep113089-21ntpq22:18:381
13045229710,271sleep113089-21ntpq22:18:381
18980227121,229sleep119004-21fschecks_count22:38:331
11778222832,181sleep3286-21dbus-daemon23:58:123
1769022166,199sleep3370-21snmpd00:14:193
18622221214,184sleep018720-21sed19:08:440
2210122089,31sleep30-21swapper/322:48:323
26586220628,97sleep326794-21sed23:03:143
11927219111,124sleep30-21swapper/320:33:123
2339218918,59sleep30-21swapper/321:43:443
6051218517,150sleep36117-21processes23:38:453
8381218220,145sleep18428-40ogrotate23:48:121
21404217915,57sleep30-21swapper/300:28:133
28619217714,143sleep328645-21wc23:08:273
28619217714,143sleep328645-21wc23:08:273
1457721710,15sleep314259-21cyclictest18:58:323
24505216611,143sleep329726-1kworker/3:1H21:13:153
12137216310,51sleep312225-21fschecks_time23:58:323
11533216311,55sleep30-21swapper/322:13:403
31744216121,16sleep30-21swapper/319:53:133
31744216121,16sleep30-21swapper/319:53:133
273821619,115sleep32844-21tune2fs20:03:353
3158021589,134sleep331684-21date23:18:133
12760215818,114sleep30-21swapper/322:18:323
12760215818,114sleep30-21swapper/322:18:323
16802215530,110sleep316829-21netstat19:03:383
16656214912,19sleep30-21swapper/320:48:143
24248214812,27sleep30-21swapper/322:53:453
14622214812,46sleep30-21swapper/322:23:373
2178321478,116sleep30-21swapper/319:18:443
30895214512,118sleep330936-21latency_hist21:33:143
26235214450,39sleep30-21swapper/321:18:323
26235214450,39sleep30-21swapper/321:18:323
460221437,124sleep34646-21ntpq20:08:403
20817214311,52sleep320840-21munin-run19:18:123
29125213911,109sleep329258-21latency_hist21:28:133
29057213936,14sleep30-21swapper/323:09:203
29057213936,14sleep30-21swapper/323:09:203
15851213911,114sleep315973-21timerwakeupswit00:08:463
2314521379,112sleep323118-21/usr/sbin/munin21:08:343
2265121377,15sleep30-21swapper/319:23:253
5769213338,55sleep30-21swapper/320:13:293
7382213228,16sleep30-21swapper/320:18:303
28248213220,95sleep128339-21latency_hist23:08:131
28248213220,95sleep128339-21latency_hist23:08:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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