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2026-06-08 - 23:53

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Mon Jun 08, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1578254995543,7cyclictest1630340-21grep09:35:262
1578243995144,4cyclictest0-21swapper/010:10:120
1578250995044,4cyclictest1637254-21kworker/u8:0+events_unbound10:00:521
1578243994937,7cyclictest1621846-21grep09:10:250
1578257994740,5cyclictest1622209-21kworker/u8:2+events_unbound09:15:453
1578257994740,5cyclictest1622209-21kworker/u8:2+events_unbound09:15:453
1578254994729,13cyclictest0-21swapper/212:19:592
1578243994739,5cyclictest1625244-21unixbench_multi09:20:250
1578243994739,5cyclictest1625244-21unixbench_multi09:20:240
1578243994733,10cyclictest121ktimers/007:55:130
1578257994638,6cyclictest1622209-21kworker/u8:2+events_unbound09:30:483
1578254994535,7cyclictest1679212-21munin-plugin-st12:00:002
1578257994433,5cyclictest1652902-21kworker/u8:1+events_unbound10:45:593
157825499441,9cyclictest1601094-21/usr/sbin/munin08:10:252
157825499441,9cyclictest1601094-21/usr/sbin/munin08:10:252
1578257994333,7cyclictest1590692-21grep07:40:263
157825499439,30cyclictest1689688-21ls12:30:012
157825499431,7cyclictest1638650-21/usr/sbin/munin10:00:242
157825499431,6cyclictest1681274-21df_inode12:05:162
157825499431,11cyclictest1586255-21apt-get07:30:132
157825499431,10cyclictest1624226-21/usr/sbin/munin09:20:262
157825499431,10cyclictest1624226-21/usr/sbin/munin09:20:262
1578250994335,4cyclictest1685626-21unixbench_singl12:15:261
1578257994236,4cyclictest1632463-21kworker/u8:1+events_unbound09:50:493
1578257994235,5cyclictest1625506-21kworker/u8:1+events_unbound09:25:483
1578257994231,8cyclictest1693079-21sendmail12:39:593
1578254994234,4cyclictest1671978-21sendmail11:40:002
1578254994232,7cyclictest311ktimers/212:35:132
157825499421,9cyclictest1585386-21/usr/sbin/munin07:25:262
157825499411,9cyclictest1687785-21cron12:23:002
157825499411,9cyclictest1674967-21/usr/sbin/munin11:45:262
157825499411,8cyclictest1646778-21/usr/sbin/munin10:25:182
157825499411,8cyclictest1592159-21/usr/sbin/munin07:45:232
157825499411,4cyclictest1645392-21find10:20:222
157825499411,35cyclictest1633017-21cat09:45:162
157825499410,3cyclictest0-21swapper/208:35:122
1578257994022,5cyclictest131rcu_preempt12:30:003
157825499404,31cyclictest1655675-21tr10:50:202
1578254994029,7cyclictest1596424-21apt-key08:00:012
157825499402,5cyclictest1660262-21apt-get11:05:122
157825499402,33cyclictest1683019-21fschecks_count12:10:152
157825499402,11cyclictest1598356-21sed08:05:012
157825499401,9cyclictest1676151-21/usr/sbin/munin11:50:142
157825499401,9cyclictest1623585-21users09:15:262
157825499401,9cyclictest1623585-21users09:15:262
157825499401,8cyclictest1654453-21unixbench_multi10:45:262
157825499401,7cyclictest1611091-21/usr/sbin/munin08:40:232
157825499401,3cyclictest0-21swapper/209:30:112
157825499401,12cyclictest1658342-21awk11:00:012
157825499400,3cyclictest0-21swapper/207:15:112
157825499400,35cyclictest1588072-21df_inode07:35:152
1578257993933,4cyclictest1685684-21kworker/u8:1+events_unbound12:21:123
1578257993933,4cyclictest1663060-21kworker/u8:2+events_unbound11:41:073
157825499392,30cyclictest1612253-21cut08:45:152
157825499391,9cyclictest1582546-21/usr/sbin/munin07:20:142
157825499391,8cyclictest1620013-21/usr/sbin/munin09:05:252
157825499391,7cyclictest1616130-21meminfo08:55:192
157825499391,4cyclictest1639578-21apt-get10:05:122
157825499391,3cyclictest0-21swapper/209:25:132
1578250993933,4cyclictest1661348-21kworker/u8:0+events_unbound11:06:031
1578250993917,12cyclictest1623033-21ntpq09:15:201
1578250993917,12cyclictest1623033-21ntpq09:15:191
1578257993817,13cyclictest131rcu_preempt08:15:233
1578257993817,13cyclictest131rcu_preempt08:15:233
1578257993816,14cyclictest131rcu_preempt10:55:173
1578257993816,13cyclictest131rcu_preempt08:00:023
1578257993815,6cyclictest131rcu_preempt12:00:113
157825499383,7cyclictest1607339-21sed08:30:182
157825499382,4cyclictest1658680-21df_inode11:00:172
157825499382,32cyclictest1642739-21cron10:15:002
157825499381,9cyclictest1598986-21/usr/sbin/munin08:05:222
157825499381,7cyclictest1690071-21grep12:30:152
157825499381,6cyclictest1672265-21/usr/sbin/munin11:40:142
157825499381,6cyclictest1613536-21apt-get08:50:062
157825499381,3cyclictest0-21swapper/211:10:112
157825499381,3cyclictest0-21swapper/209:00:132
157825499381,3cyclictest0-21swapper/208:25:122
157825499381,34cyclictest1635021-21ntp_states09:50:192
157825499381,15cyclictest1593088-21chrt07:50:122
157825499381,11cyclictest1648795-21fgrep10:30:232
157825499381,11cyclictest1621869-21awk09:10:252
1578250993829,6cyclictest0-21swapper/112:15:001
1578257993731,4cyclictest1615359-21kworker/u8:2+events_unbound08:57:413
157825499371,8cyclictest1663827-21fschecks_count11:15:132
157825499371,7cyclictest1652062-21if_eth110:40:172
157825499371,5cyclictest1602268-21meminfo08:15:192
157825499371,5cyclictest1602268-21meminfo08:15:182
157825499371,4cyclictest1665443-21/usr/sbin/munin11:20:152
157825499371,3cyclictest1631051-21apt-get09:40:112
157825499371,3cyclictest1604455-21/usr/sbin/munin08:20:262
157825499371,3cyclictest0-21swapper/211:30:122
157825499371,3cyclictest0-21swapper/210:35:162
157825499371,3cyclictest0-21swapper/210:15:122
157825499371,3cyclictest0-21swapper/209:55:142
157825499371,32cyclictest1579458-21unixbench_singl07:10:272
1578250993718,10cyclictest131rcu_preempt08:30:011
1578243993730,4cyclictest1691351-21cron12:34:590
1578243993730,3cyclictest1627403-21kthreadd09:30:000
1578257993630,4cyclictest1680891-21kworker/u8:2+events_unbound12:11:093
1578257993619,5cyclictest131rcu_preempt09:40:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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