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2025-11-30 - 19:03

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 100 highest latencies:
System rackbslot7s.osadl.org (updated Sun Nov 30, 2025 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6964263589,6327sleep24670-21kworker/u8:309:08:292
139982163512,1609sleep06228-1kworker/0:1H11:13:230
14382283118,795sleep314391-21/usr/sbin/munin11:13:473
1372270918,670sleep31491-21/usr/sbin/munin12:13:413
1372270918,670sleep31491-21/usr/sbin/munin12:13:413
31264260112,575sleep131308-21ntpq08:43:361
10726249940,406sleep210816-21fschecks_time11:03:322
391248123,445sleep2435-21ntpq08:48:382
391248123,445sleep2435-21ntpq08:48:382
22486233914,310sleep322490-21ntpq11:38:393
880223047,261sleep28777-21apt-get09:13:342
782922950,58sleep231036-21cyclictest10:53:332
25043229441,149sleep225175-21unixbench_multi10:03:422
21937229135,148sleep222086-21unixbench_multi09:53:452
8358226529,198sleep28512-21date07:33:132
32590226352,63sleep232645-21munin-node07:08:132
13446225920,215sleep313486-21apt-get11:13:103
4181225327,187sleep222530-21kworker/u8:110:43:122
5660225154,143sleep25707-21sshd07:23:322
23542224250,106sleep223685-21unixbench_singl09:58:462
26124222936,119sleep225887-21/usr/sbin/munin10:08:312
17882222811,163sleep217900-21modprobe08:03:102
20166222745,49sleep20-21swapper/211:33:122
4929221149,99sleep20-21swapper/209:03:122
23235219545,86sleep20-21swapper/208:18:372
29721219414,164sleep029729-21needreboot08:38:500
2369421946,151sleep223296-21apt-get11:43:142
2369421946,151sleep223296-21apt-get11:43:142
9456219143,136sleep29497-21ntpq10:58:352
20311219029,145sleep220430-21timerwakeupswit09:48:442
20311219029,145sleep220430-21timerwakeupswit09:48:442
12956218921,47sleep112972-21apt-get07:48:101
12956218921,47sleep112972-21apt-get07:48:101
30315217946,85sleep20-21swapper/212:03:342
2674217641,48sleep20-21swapper/212:18:362
2674217641,48sleep20-21swapper/212:18:362
6463217026,134sleep25666-21snmpd12:30:322
2147217030,127sleep22183-21cat08:54:152
27631216932,125sleep227699-21fschecks_time08:33:312
27631216932,125sleep227699-21fschecks_time08:33:312
27074216924,88sleep20-21swapper/211:53:322
130321657,146sleep21369-21cat12:13:402
130321657,146sleep21369-21cat12:13:402
24281216422,119sleep30-21swapper/311:44:283
24281216422,119sleep30-21swapper/311:44:283
6212216013,133sleep16354-21awk07:23:431
129021579,39sleep20-21swapper/210:33:272
19554215649,48sleep20-21swapper/211:28:442
3161421528,106sleep231616-21cpu12:08:272
5713215013,101sleep25783-21swap09:03:402
14824215047,58sleep214898-21latency_hist07:53:122
14824215047,58sleep214898-21latency_hist07:53:122
26704214916,83sleep20-21swapper/211:53:122
8599214854,54sleep28573-21/usr/sbin/munin07:33:292
18520214831,75sleep218556-21ntpq09:43:352
12583214833,100sleep212630-21ntp_offset11:08:372
1229021488,103sleep212328-21ntpq09:23:362
1164821476,105sleep211685-21latency_hist09:23:112
3939214633,72sleep24024-21fschecks_time12:23:292
1061214316,109sleep01150-21load07:08:350
29596214136,44sleep20-21swapper/208:38:482
21315214136,54sleep20-21swapper/208:13:282
1731921419,86sleep20-21swapper/209:38:422
16285213633,45sleep20-21swapper/209:38:102
9244213518,21sleep00-21swapper/009:14:210
720221339,25sleep27246-21awk10:53:102
1799213017,93sleep31271-21apt-get08:53:233
31800212517,89sleep0369-21sshd08:43:470
30310212418,87sleep330326-21latency_hist10:23:103
29075212317,42sleep20-21swapper/211:58:412
15534212224,58sleep20-21swapper/207:53:412
4014211928,42sleep20-21swapper/207:18:352
2135211914,89sleep12195-21users10:33:461
19814211916,87sleep319854-21sort08:08:323
2562211813,89sleep12620-21if_err_eth007:13:371
17475211525,44sleep20-21swapper/211:23:352
32141211418,63sleep20-21swapper/208:48:012
29663211130,49sleep129682-21apt-get06:58:231
9470210912,23sleep39596-21cat09:14:283
27033210516,74sleep127070-21fschecks_count11:53:311
16338210518,70sleep016421-21wc09:38:120
785210417,71sleep1806-21cpu07:08:281
6204210416,71sleep16216-21/usr/sbin/munin10:48:321
28230210411,78sleep028259-21systemd-run11:58:110
13716210430,41sleep213747-21grep09:28:332
10115210327,41sleep210134-21apt-get07:38:222
10115210327,41sleep210134-21apt-get07:38:222
8998210220,64sleep38573-21/usr/sbin/munin07:33:383
447821026,82sleep14492-21grep10:43:321
2723521028,54sleep2284-21dbus-daemon08:33:112
23362210221,51sleep00-21swapper/011:43:120
28180210110,79sleep228300-21cat10:13:442
22526210113,35sleep10-21swapper/111:38:411
30375210012,71sleep030542-21unixbench_singl06:58:420
2065121005,30sleep20-21swapper/208:08:512
255522998,12sleep30-21swapper/311:48:323
698229811,18sleep00-21swapper/009:08:390
1298429720,35sleep20-21swapper/207:48:112
1298429720,35sleep20-21swapper/207:48:112
3267229614,66sleep332749-21readlink10:28:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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