You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-26 - 04:47

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #e, 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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot4s.osadl.org (updated Sun Apr 26, 2026 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1315561994539,4cyclictest1445040-21latency_hist21:15:003
1315551994438,4cyclictest1517882-21ntpq22:20:230
131555199422,38cyclictest1-21systemd20:40:010
1315556994134,5cyclictest1570157-21latency_hist23:15:001
1315558994036,3cyclictest1445301-21apt-get21:15:122
1315561993934,3cyclictest1559835-21latency_hist23:05:013
1315558993936,2cyclictest1450236-21kworker/u8:3+flush-259:023:55:212
1315558993832,4cyclictest1393314-21latency_hist20:25:002
1315556993729,5cyclictest1482304-21cp21:50:011
1315551993732,3cyclictest252-21systemd-journal00:27:320
1315551993632,3cyclictest1595992-21kworker/u8:1+flush-259:023:50:210
1315561993428,4cyclictest1481076-21ntpq21:45:223
1315556993429,3cyclictest252-21systemd-journal22:17:401
1315551993327,4cyclictest1444109-21ntpq21:10:210
1315558993229,2cyclictest1595992-21kworker/u8:1+flush-259:000:20:002
1315558993228,3cyclictest1616621-21kworker/u8:2+flush-259:000:25:212
1315558993228,3cyclictest1492658-21kworker/u8:1+flush-259:022:45:222
1315558993228,3cyclictest1403785-21kworker/u8:0+flush-259:021:15:002
1315556993127,3cyclictest1409200-21apt-get20:40:111
1315556993125,4cyclictest1330958-21latency_hist19:25:001
1315551993126,3cyclictest509-21rs:main0
1315558992924,4cyclictest1627548-21apt-get00:10:132
1315558992924,3cyclictest1357288-21base6419:50:012
1315556992923,4cyclictest252-21systemd-journal19:30:001
1315551992923,4cyclictest1595967-21latency_hist23:40:000
1315561992823,4cyclictest1394022-21kworker/u8:2+flush-259:020:35:013
1315558992824,3cyclictest1616621-21kworker/u8:2+events_unbound00:30:222
1315558992822,4cyclictest1601579-21diskstats23:45:142
1315556992822,4cyclictest252-21systemd-journal21:25:001
1315556992822,4cyclictest1325797-21latency_hist19:20:011
1315556992820,5cyclictest1398591-21latency_hist20:30:011
1315561992723,3cyclictest1403785-21kworker/u8:0+flush-259:020:50:013
1315561992720,5cyclictest252-21systemd-journal00:30:013
1315558992723,3cyclictest1283385-21kworker/u8:1+flush-259:020:00:012
1315558992722,3cyclictest252-21systemd-journal19:50:002
1315556992721,4cyclictest252-21systemd-journal21:31:331
1315556992720,5cyclictest1466290-21cp21:35:011
1315551992724,2cyclictest1283385-21kworker/u8:1+events_unbound19:25:240
1315551992722,3cyclictest1450236-21kworker/u8:3+flush-259:022:15:160
1315551992720,5cyclictest1376961-21ntpq20:05:220
1315556992621,3cyclictest1611694-21apt-get23:55:111
1315556992619,5cyclictest1560075-21/usr/sbin/munin23:05:151
1315561992519,4cyclictest1388159-21latency_hist20:20:013
1315561992518,5cyclictest1464815-21ntpq21:30:243
1315561992518,5cyclictest1454544-21ntpq21:20:233
1315558992522,2cyclictest1403785-21kworker/u8:0+flush-259:021:35:152
1315558992521,3cyclictest252-21systemd-journal19:26:332
1315558992518,5cyclictest1620839-21ntpq00:00:222
1315556992521,3cyclictest1621772-21gpgv00:05:001
1315551992522,2cyclictest1450236-21kworker/u8:3+flush-259:021:40:210
1315551992521,3cyclictest1310431-21kworker/u8:3+events_unbound20:30:150
1315561992419,4cyclictest1283385-21kworker/u8:1+flush-259:020:05:263
1315558992422,1cyclictest0-21swapper/220:40:002
1315558992421,2cyclictest1283385-21kworker/u8:1+flush-259:020:05:012
1315551992421,2cyclictest1450236-21kworker/u8:3+flush-259:022:35:170
1315551992420,3cyclictest1595992-21kworker/u8:1+events_unbound00:05:230
1315551992420,3cyclictest1595992-21kworker/u8:1+events_unbound00:05:220
1315551992420,3cyclictest1450236-21kworker/u8:3+events_unbound23:40:160
1315551992418,5cyclictest1616592-21latency_hist00:00:010
1315551992418,4cyclictest1548680-21ntpq22:50:210
1315561992320,2cyclictest1392815-21kworker/u8:1+flush-259:020:25:013
1315561992318,3cyclictest1429788-21/usr/sbin/munin21:00:153
1315558992320,2cyclictest1492658-21kworker/u8:1+events_unbound23:20:222
1315558992320,2cyclictest1492658-21kworker/u8:1+events_unbound22:20:252
1315558992318,4cyclictest1424611-21/usr/sbin/munin20:55:142
1315551992319,3cyclictest1482607-21apt-get21:50:130
1315551992317,4cyclictest1642727-21latency_hist00:25:010
1315551992316,5cyclictest252-21systemd-journal00:35:000
1315551992316,5cyclictest1424378-21latency_hist20:55:010
1315561992218,3cyclictest252-21systemd-journal23:20:003
1315561992217,3cyclictest252-21systemd-journal00:16:333
1315561992215,5cyclictest1450219-21latency_hist21:20:003
1315558992219,2cyclictest1492658-21kworker/u8:1+flush-259:022:05:232
1315558992219,2cyclictest1403785-21kworker/u8:0+flush-259:021:34:582
1315558992219,2cyclictest1403785-21kworker/u8:0+flush-259:021:25:212
1315558992218,3cyclictest1403785-21kworker/u8:0+flush-259:022:00:252
1315556992218,3cyclictest1585615-21kworker/u8:2+flush-259:023:40:241
1315556992216,4cyclictest1580747-21apt-get23:25:121
1315551992219,2cyclictest1320585-21kworker/u8:0+events_unbound19:15:230
1315561992117,3cyclictest1394022-21kworker/u8:2+flush-259:020:39:393
1315561992114,5cyclictest1356779-21apt-get19:50:003
1315558992118,2cyclictest1616621-21kworker/u8:2+events_unbound00:20:232
1315558992118,2cyclictest1320585-21kworker/u8:0+flush-259:019:20:272
1315556992117,2cyclictest0-21swapper/121:20:001
1315556992116,3cyclictest1616621-21kworker/u8:2+flush-259:000:20:181
1315551992118,2cyclictest1439865-21cron21:10:000
1315551992117,3cyclictest1492658-21kworker/u8:1+flush-259:023:25:250
131555199210,19cyclictest1-21systemd23:08:330
1315561992016,3cyclictest1476355-21apt-get21:45:003
1315561992016,2cyclictest0-21swapper/323:55:013
1315561992014,4cyclictest252-21systemd-journal22:55:013
1315561992014,4cyclictest1529027-21latency_hist22:35:013
1315561992014,4cyclictest1502941-21latency_hist22:10:013
1315558992017,2cyclictest507-21in:imuxsock22:00:002
1315558992017,2cyclictest1450236-21kworker/u8:3+events_unbound23:30:162
131555699208,10cyclictest252-21systemd-journal22:49:331
1315556992016,3cyclictest1450236-21kworker/u8:3+flush-259:022:25:221
1315556992015,4cyclictest252-21systemd-journal19:50:331
1315556992014,4cyclictest1642986-21apt-get00:25:101
1315556992014,4cyclictest1632419-21latency_hist00:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional