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2026-06-19 - 07:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Fri Jun 19, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137238923730,2sleep3481ktimers/319:50:283
144044323520,5sleep30-21swapper/320:59:223
147660021510,2sleep3471rcuc/321:35:313
1329179998373,7cyclictest1361364-21latency_hist19:40:020
15062872620,3sleep01506293-21kthreadcore22:05:290
1329179996256,4cyclictest1395090-21ntpq20:10:350
1329179996252,7cyclictest1633809-21apt-get00:15:000
1329187996052,6cyclictest1480400-21cat21:40:012
1329187995751,4cyclictest1361622-21kworker/u8:2+flush-8:020:10:362
1329181995749,5cyclictest1599176-21latency_hist23:40:001
1329179995747,8cyclictest1376755-21diskstats19:55:250
1329179995648,6cyclictest1543727-21ntpq22:40:370
1329187995550,4cyclictest1410055-21kworker/u8:1+flush-8:022:25:312
1329179995444,8cyclictest1618034-21ntpq23:55:350
1329181995246,4cyclictest1334201-21gpgv19:15:001
1329179995243,7cyclictest1459478-21ntpq21:15:400
1329181995145,4cyclictest1371507-21kworker/u8:4+flush-8:021:30:331
1329179995145,4cyclictest1485514-21kworker/u8:0+flush-8:021:45:300
1329179995142,6cyclictest1434682-21ntpq20:50:360
1329179995141,7cyclictest1370348-21ntpq19:45:340
1329179994942,5cyclictest1386436-21/usr/sbin/munin20:05:320
1329179994940,7cyclictest1642999-21ntpq00:20:350
1329187994840,5cyclictest1465367-21cp21:25:002
1329181994838,8cyclictest1454499-21ntpq21:10:371
1329179994840,6cyclictest1704890-21systemd-journal23:22:380
1329179994834,12cyclictest1334176-21apt-get19:15:010
1329187994743,3cyclictest1371500-21kworker/u8:3+flush-8:019:50:312
1329187994741,4cyclictest1485514-21kworker/u8:0+events_unbound22:15:342
1329181994736,8cyclictest1346759-21/usr/sbin/munin19:25:311
1329181994639,5cyclictest1545122-21diskstats22:45:261
1329181994637,7cyclictest1638118-21ntpq00:15:361
1329187994539,4cyclictest1371507-21kworker/u8:4+flush-8:023:35:352
1329179994535,8cyclictest1568369-21ntpq23:05:330
1329187994434,8cyclictest1704890-21systemd-journal22:25:012
1329181994439,3cyclictest1499249-21ntpq21:55:351
1329187994338,4cyclictest1371507-21kworker/u8:4+flush-8:020:15:392
1329181994335,6cyclictest1475674-21apt-get21:35:221
1329181994335,6cyclictest1371547-21apt-get19:50:211
1329179994334,7cyclictest1608194-21ntpq23:45:360
1329187994237,4cyclictest1361622-21kworker/u8:2+flush-8:019:40:372
1329181994230,9cyclictest1704890-21systemd-journal00:22:201
1329179994231,8cyclictest1465268-21latency_hist21:25:000
1329181994131,8cyclictest1464390-21ntpq21:20:371
1329181994030,8cyclictest1504166-21ntpq22:00:381
1329181994027,10cyclictest1704890-21systemd-journal22:29:201
1329187993934,4cyclictest1328910-21kworker/u8:0+flush-8:019:20:272
1329181993932,5cyclictest1510244-21apt-get22:10:211
1329181993932,5cyclictest1440800-21apt-get21:00:231
1329181993932,5cyclictest1356404-21latency_hist19:35:021
1329181993931,5cyclictest1495154-21latency_hist21:55:011
1329181993931,5cyclictest1495154-21latency_hist21:55:001
1329179993932,5cyclictest1410055-21kworker/u8:1+flush-8:021:40:300
1329179993832,4cyclictest1276687-21kworker/u8:1+events_unbound19:15:030
1329179993831,5cyclictest1336441-21kworker/u8:2+events_unbound19:25:380
1329179993829,7cyclictest1436095-21diskstats20:55:270
1329179993829,7cyclictest1429771-21ntpq20:45:330
1329179993829,7cyclictest1409937-21ntpq20:25:330
1329179993827,8cyclictest1371507-21kworker/u8:4+flush-8:020:35:380
1329187993731,4cyclictest1371507-21kworker/u8:4+events_unbound21:45:432
1329181993730,5cyclictest1341329-21latency_hist19:20:011
1329181993725,9cyclictest1484354-21ntpq21:40:341
1329179993725,10cyclictest1578279-21ntpq23:15:350
1329187993631,4cyclictest1404175-21kworker/u8:0+events_unbound20:20:422
1329181993630,4cyclictest1336441-21kworker/u8:2+flush-8:019:21:251
1329179993629,5cyclictest1371507-21kworker/u8:4+flush-8:020:20:260
1329179993627,7cyclictest1634564-21diskstats00:15:260
1329179993627,6cyclictest1346512-21latency_hist19:25:010
132881223621,10sleep10-21swapper/119:09:261
1329187993531,2cyclictest1371507-21kworker/u8:4+flush-8:022:40:332
1329181993528,5cyclictest1704890-21systemd-journal22:54:201
1329179993527,6cyclictest1371507-21kworker/u8:4+flush-8:022:50:360
1329187993424,8cyclictest1495149-21cat21:55:002
1329187993424,8cyclictest1495149-21cat21:55:002
1329181993428,4cyclictest1371507-21kworker/u8:4+flush-8:020:30:451
1329179993427,6cyclictest1485514-21kworker/u8:0+flush-8:021:50:310
1329179993427,6cyclictest1485514-21kworker/u8:0+flush-8:021:50:300
1329179993425,7cyclictest1623117-21ntpq00:00:380
1329179993425,7cyclictest1385313-21ntpq20:00:340
1329181993328,3cyclictest1426696-21irqrtprio20:45:281
1329181993327,1cyclictest161rcu_preempt20:10:011
1329181993326,5cyclictest1593331-21ntpq23:30:361
1329181993326,4cyclictest1523864-21strings22:20:341
1329181993325,6cyclictest1544596-21latency_hist22:45:001
1329179993327,4cyclictest1524293-21kworker/u8:2+events_unbound23:25:410
1329179993326,5cyclictest1421043-21/usr/sbin/munin20:40:380
1329179993326,5cyclictest1371507-21kworker/u8:4+flush-8:021:55:500
1329179993325,5cyclictest1475405-21latency_hist21:35:010
152978423222,5sleep30-21swapper/322:30:023
1329187993227,3cyclictest1361622-21kworker/u8:2+flush-8:019:45:312
1329187993226,5cyclictest1336441-21kworker/u8:2+flush-8:019:31:242
1329187993224,5cyclictest1549803-21apt-get22:50:212
1329181993227,4cyclictest1410055-21kworker/u8:1+flush-8:022:30:371
1329181993227,3cyclictest401-21dbus-daemon20:00:011
1329181993216,2cyclictest0-21swapper/120:40:301
1329179993228,3cyclictest1410055-21kworker/u8:1+events_unbound23:10:240
1329179993226,4cyclictest1371507-21kworker/u8:4+events_unbound22:35:300
1329179993225,5cyclictest1624209-21sshd00:05:200
13282882322,26sleep20-21swapper/219:05:422
1329187993127,3cyclictest1371507-21kworker/u8:4+flush-8:021:30:462
1329187993123,6cyclictest1704890-21systemd-journal00:26:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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