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2025-07-02 - 18:15

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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.

Total number of samples: 50 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 rack4slot6s.osadl.org (updated Wed Jul 02, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1302021330,3chrt13022-21fgrep12:10:270
32428991209,21cyclictest9627-21/usr/sbin/munin07:45:290
32428991199,17cyclictest3824-21seq09:30:130
324289911910,17cyclictest15666-21ntp_states10:15:250
32428991189,17cyclictest396-21pluginstate07:10:250
324289911721,18cyclictest12158-21sshd10:00:480
324289911719,15cyclictest13421-21runrttasks10:05:340
324289911623,15cyclictest7899-21ntpq09:45:210
32428991158,17cyclictest2330-21runrttasks09:24:490
32428991158,17cyclictest16321-21seq08:11:490
32428991158,15cyclictest31775-21chrt09:11:240
324289911510,15cyclictest19323-21munin-run08:25:010
32428991149,16cyclictest26891-21sendmail-msp11:00:010
32428991148,16cyclictest23426-21/usr/sbin/munin08:40:170
32428991148,15cyclictest10086-21munin-run09:55:010
324289911411,18cyclictest16707-21rs:main0
324289911410,16cyclictest8638-21cat11:55:010
324289911410,15cyclictest21712-21munin-run10:40:010
324289911410,15cyclictest14147-21latency_hist08:05:010
32428991138,16cyclictest14325-21runrttasks08:05:130
32428991138,16cyclictest10973-21runrttasks12:03:090
32428991138,15cyclictest20294-21chrt10:34:050
32428991137,15cyclictest5585-21seq11:41:170
32428991137,14cyclictest12847-21munin-run08:00:010
324289911332,70cyclictest20974-21/usr/sbin/munin08:30:210
32428991129,16cyclictest29634-21df11:10:130
32428991128,15cyclictest27214-21cpu08:55:130
32428991128,15cyclictest23384-21awk10:45:210
32428991127,17cyclictest269-21runrttasks12:09:130
32428991127,16cyclictest15962-21seq12:21:410
32428991127,15cyclictest194382chrt08:25:090
32428991126,12cyclictest11465-21seq07:54:240
324289911233,69cyclictest3110-21/usr/sbin/munin07:20:270
324289911226,14cyclictest31090-21missed_timers11:15:210
324289911211,17cyclictest6778-21ntpq07:35:210
2452721120,4sleep024562-21irqstats10:50:190
32428991119,14cyclictest32392-21df09:15:130
32428991119,14cyclictest25196-21users08:45:330
32428991119,14cyclictest10953-21seq09:56:410
32428991118,15cyclictest28821-21grep09:00:250
32428991118,14cyclictest15265-21sort10:15:010
32428991118,13cyclictest5237-21/usr/sbin/munin07:30:130
32428991117,17cyclictest9749-21chrt11:58:570
32428991116,14cyclictest526-21chrt11:22:050
324289911130,71cyclictest3538-21latency_hist11:35:010
324289911123,15cyclictest108-21systemd-journal09:40:000
324289911123,14cyclictest6543-21/usr/sbin/munin11:45:370
324289911123,14cyclictest19861-21seq12:37:060
324289911121,16cyclictest25988-21/usr/sbin/munin08:50:190
324289911113,15cyclictest18034-21ntp_kernel_err12:30:200
324289911111,18cyclictest1351-21/usr/sbin/munin07:15:380
324289911111,16cyclictest7877-21df07:40:130
324289911110,11cyclictest175382sleep010:22:290
32428991107,15cyclictest5172-21cut07:30:010
324289911027,71cyclictest30049-21/usr/sbin/munin09:05:250
324289911017,15cyclictest14179-21ntp_states12:15:220
32428991099,15cyclictest22146-21ntp_states10:40:250
32428991099,14cyclictest28899-21users11:05:330
32428991098,18cyclictest16497-21/usr/sbin/munin12:25:320
324289910921,14cyclictest269-21runrttasks08:37:280
324289910913,17cyclictest18039-21df_inode10:25:150
32428991088,15cyclictest3573-21/usr/sbin/munin11:35:200
32428991088,13cyclictest1014-21/usr/sbin/munin11:25:160
324289910812,19cyclictest6424-21df_inode09:40:160
324289910711,16cyclictest17126-21ntp_states08:15:220
32428991068,16cyclictest27070-21df11:00:160
32428991039,16cyclictest32462-21latency_hist07:10:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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