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2026-08-05 - 23:20

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #3

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.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot3s.osadl.org (updated Wed Aug 05, 2026 12:43:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
57799216147,35mali-event-hand0-21swapper/307:10:173
224729299741,12cyclictest2304225-21idleruntime-cro10:45:230
2247294996014,43cyclictest2284935-21cat10:10:482
224729499571,17cyclictest77-21kcompactd011:30:162
224729499571,17cyclictest77-21kcompactd011:30:162
224729499562,16cyclictest2303965-21ssh10:44:282
224729499561,17cyclictest2318025-21ssh11:08:142
224729499552,15cyclictest2309835-21ssh10:54:522
224729499551,18cyclictest514-21weston09:18:222
224729499551,18cyclictest514-21weston09:18:222
224729499551,18cyclictest2326653-21ssh11:23:122
224729499551,17cyclictest2283305-21ssh10:08:102
224729499551,17cyclictest2283305-21ssh10:08:102
224729499541,18cyclictest2294479-21ssh10:26:242
224729499541,17cyclictest2348577-21ntpq12:00:572
224729499541,16cyclictest2266587-21ssh09:32:332
224729499541,16cyclictest2266587-21ssh09:32:332
224729499541,15cyclictest2289377-21ssh10:19:062
224729499532,16cyclictest2324171-21ssh11:19:402
224729499532,15cyclictest2364694-21ssh12:30:102
224729499532,15cyclictest2274842-21ssh09:54:022
224729499531,8cyclictest2278059-21ssh10:00:162
224729499531,8cyclictest2278059-21ssh10:00:162
224729499531,19cyclictest2345661-21ntpq11:55:552
224729499531,17cyclictest77-21kcompactd009:37:582
224729499531,16cyclictest514-21weston09:11:222
224729499531,16cyclictest514-21weston09:10:222
224729499531,16cyclictest514-21weston08:18:222
224729499531,16cyclictest514-21weston08:18:222
224729499531,16cyclictest514-21weston07:31:222
224729499531,16cyclictest2355817-21ssh12:14:182
224729499531,15cyclictest2300359-21ssh10:36:492
224729499531,15cyclictest2298172-21ssh10:34:222
224729499531,15cyclictest2271536-21ssh09:47:322
224729499521,17cyclictest2313949-21ntpq11:00:532
224729499521,17cyclictest2313949-21ntpq11:00:532
224729499521,17cyclictest2279188-21ntpq10:00:532
224729499521,16cyclictest514-21weston08:53:222
224729499521,15cyclictest514-21weston07:51:222
224729499521,15cyclictest2366780-21ssh12:32:102
224729499521,15cyclictest2343965-21ssh11:53:182
224729499521,15cyclictest2312015-21ssh10:57:172
224729499521,14cyclictest2358161-21ssh12:17:192
224729499521,14cyclictest2352700-21ssh12:08:312
224729499521,14cyclictest2262733-21ssh09:21:362
224729499512,16cyclictest2319790-21ntpq11:10:582
224729499512,15cyclictest2368766-21ntpq12:35:562
224729499512,14cyclictest2270396-21ssh09:44:192
224729499511,17cyclictest2336918-21ntpq11:40:512
224729499511,17cyclictest2331131-21ntpq11:30:512
224729499511,16cyclictest2265474-21ssh09:29:512
224729499511,15cyclictest514-21weston11:50:222
224729499511,15cyclictest514-21weston08:33:222
2247294995021,26cyclictest2252486-21cron08:05:242
224729499501,16cyclictest2333501-21diskstats11:35:452
224729499501,14cyclictest2361545-21ssh12:24:072
224729499501,14cyclictest2291926-21ssh10:22:452
2247293995032,14cyclictest2278101-21sh10:00:231
2247293995032,14cyclictest2278101-21sh10:00:231
2247297994940,7cyclictest339-21systemd-userdbd07:22:035
224729499491,24cyclictest2305730-21ssh10:46:012
224729499491,19cyclictest2250852-21cat07:45:252
224729499491,15cyclictest2256203-21systemd-userwor08:48:492
224729499491,13cyclictest514-21weston09:01:222
2247292994941,5cyclictest2335850-21sendmail11:40:230
224729499481,21cyclictest2252959-21apt-get08:10:232
224729499481,15cyclictest2254412-21/usr/sbin/munin08:25:232
2247292994840,6cyclictest575-21rs:main0
224729299481,42cyclictest2286833-21cron10:15:230
224729499471,22cyclictest2253298-21systemd-userwor08:11:332
224729499471,15cyclictest514-21weston08:41:222
2247292994722,9cyclictest2278357-21sed10:00:250
2247292994722,9cyclictest2278357-21sed10:00:250
2247295994632,9cyclictest70-21kauditd09:50:243
224729499468,35cyclictest439-21dbus-daemon07:58:302
224729499461,9cyclictest514-21weston08:56:222
2247292994638,6cyclictest2345189-21grep11:55:450
224729299462,11cyclictest2250693-21cat07:45:240
224729499452,7cyclictest2250589-21apt-get07:45:302
224729499452,7cyclictest2250589-21apt-get07:45:302
224729499451,20cyclictest2248926-21cat07:25:242
2247292994536,7cyclictest423-21systemd-timesyn07:22:030
2247292994536,7cyclictest422-21systemd-resolve07:20:030
57799441,3mali-event-hand0-21swapper/107:35:171
2247294994436,5cyclictest2255814-21grep08:40:232
224729299441,20cyclictest2257404-21latency_hist08:55:240
224729299441,12cyclictest2269037-21cron09:40:230
57799431,3mali-event-hand0-21swapper/409:16:184
57799431,3mali-event-hand0-21swapper/409:16:184
57799431,3mali-event-hand0-21swapper/010:52:180
224729499432,11cyclictest2250092-21cron07:40:232
224729499431,13cyclictest2249094-21sshd-session07:28:262
224729499431,13cyclictest2249094-21sshd-session07:28:262
224729499431,11cyclictest1120-21snmpd08:28:042
224729499431,10cyclictest514-21weston07:18:222
2247292994326,14cyclictest2343726-21ssh11:52:230
224729299432,26cyclictest2253172-21sed08:10:240
224729299432,11cyclictest2347430-21apt-get12:00:260
2247292994313,28cyclictest2258640-21latency_hist09:10:240
2247297994234,5cyclictest2255795-21cron08:40:235
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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