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2025-07-09 - 08:51

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 Wed Jul 09, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12308226355,2597sleep312126-21kworker/3:119:13:283
886026506,611sleep38904-21ntpq20:44:373
10092251218,479sleep210095-21/usr/sbin/munin20:49:292
3542481107,354sleep3365-21modprobe20:19:083
24631244510,421sleep124632-21sshd23:18:281
17582241630,327sleep317626-21awk22:54:353
26232237613,345sleep326267-21modprobe23:24:083
2848223667,324sleep3370-21snmpd21:46:573
2848223667,324sleep3370-21snmpd21:46:573
2906723637,320sleep329141-21find20:04:423
1211023619,337sleep012151-21ntpq00:19:510
12753234313,269sleep312815-21find22:39:373
18574233411,169sleep30-21swapper/319:34:083
4670230711,261sleep34713-21ntpq22:14:363
9743227818,242sleep29801-21/usr/sbin/munin19:04:312
9764227614,151sleep3370-21snmpd22:29:433
5345226318,228sleep25353-21fschecks_count23:59:412
646722576,217sleep3370-21snmpd00:03:543
29066225517,191sleep329134-21fschecks_time21:49:323
29066225517,191sleep329134-21fschecks_time21:49:323
5214224515,213sleep15258-21/usr/sbin/munin23:59:281
6640224420,164sleep30-21swapper/318:54:423
1549224226,201sleep31585-21ntpq22:04:393
11012224053,27sleep30-21swapper/322:34:363
11012224053,27sleep30-21swapper/322:34:363
20687222523,188sleep320780-21latency_hist21:24:113
28650221912,194sleep028697-21/usr/sbin/munin21:49:080
28650221912,194sleep028697-21/usr/sbin/munin21:49:080
2099922188,173sleep321123-21cat23:04:453
11816221822,179sleep111960-21unixbench_singl19:09:431
4723221618,178sleep34788-21apt-key23:59:103
20032221513,188sleep020043-21vmstat19:35:020
20032221513,188sleep020043-21vmstat19:35:020
19107221213,92sleep319158-21latency_hist21:19:103
11655220817,177sleep311681-21fschecks_count20:54:273
23737220536,78sleep323797-21dpkg21:34:093
3047321978,152sleep330481-21awk20:09:393
14536219735,61sleep30-21swapper/321:04:123
3171219611,172sleep13181-21ntpq22:09:371
3171219611,172sleep13181-21ntpq22:09:371
26980219113,139sleep327088-21fschecks_time19:59:333
14786218912,137sleep314814-21fschecks_count21:04:283
14786218912,137sleep314814-21fschecks_count21:04:283
11224218821,140sleep111421-21apt-config00:19:111
318221879,164sleep23190-21ntpq22:09:382
318221879,164sleep23190-21ntpq22:09:382
24235218213,98sleep324241-21acpi21:34:213
29729218110,152sleep329763-21fschecks_count23:34:303
30123217519,133sleep130188-21grep23:34:401
1302421709,144sleep313118-21latency_hist00:24:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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