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2026-08-20 - 13:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, 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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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 all highest latencies:
System rackfslot4s.osadl.org (updated Thu Aug 20, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2840921270,2sleep028429-21cut00:35:310
124821250,2chrt1247-21gcc22:16:560
2073221230,2chrt20733-21/usr/sbin/munin19:25:370
3262421220,3chrt32620-21ntpq20:36:030
2658321220,2chrt26584-21sed22:06:110
1719821210,2chrt17197-21/usr/sbin/munin22:40:590
3216321200,2sleep032164-21chrt23:52:070
2596621170,2chrt25967-21runrttasks22:54:240
226021170,3chrt2261-21sleep23:56:220
370121160,2chrt3703-21grep22:20:570
3018021160,3chrt30181-21runrttasks23:49:410
720321150,2chrt7204-21chrt21:37:240
3102921140,2chrt31028-21seq20:34:190
2392421140,3chrt23925-21runrttasks23:40:170
1040421130,1sleep010407-21fschecks_time22:30:530
2132421120,2sleep021325-21cat23:36:020
1992321100,3chrt19924-21sleep19:24:440
1880821100,2chrt18809-21ssh00:20:540
2335121080,2chrt23352-21ssh21:13:090
1787421080,2chrt17875-21chrt00:19:490
734621060,2sleep07347-21irqrtprio19:55:420
1794421050,2sleep017945-21sh21:53:440
1562921050,2chrt15630-21rm22:38:300
1892321040,2chrt18922-21/usr/sbin/munin23:32:100
1144621020,3chrt11447-21runrttasks21:44:080
30502970,2sleep03051-21uname21:31:150
154022950,2sleep015403-21chrt19:16:230
278002930,2sleep027801-21chrt00:34:180
35782910,2sleep03579-21seq23:09:370
75342870,2sleep07536-21seq00:03:550
296472850,2sleep029646-21sort19:40:020
52952830,2sleep05296-21seq20:45:210
104042820,1sleep010405-21idleruntime-cro23:20:010
128572790,2sleep012858-21chrt20:05:130
111362790,2sleep011137-21seq20:54:420
51132780,2sleep05112-21cat23:11:140
140662770,2sleep014064-21aten2.4-expect23:25:310
114772750,2sleep011478-21chrt20:55:160
50872740,2sleep05088-21chrt20:45:020
108412710,2sleep010842-21chrt19:10:030
194992700,1sleep019500-21df21:56:110
131552700,2sleep013156-21seq23:23:400
105292690,2sleep010532-21cut20:00:460
226192680,2sleep022620-21sh22:49:180
4632600,1sleep0464-21chrt19:45:220
180225710,37sleep01758-21ssh21:30:020
219282560,2sleep021931-21chrt20:19:570
305862530,2sleep030587-21seq21:24:190
299992530,1sleep030000-21aten2.4_rfpower23:00:330
190612535,41sleep019066-21irqstats21:06:350
101022530,1sleep010104-21grep00:07:400
252652510,1sleep025267-21chrt21:16:070
92232500,1sleep09224-21seq22:29:030
896524913,21sleep08968-21ntpq19:06:040
266252490,2sleep026627-21aten2.4_rfpower22:55:330
254672480,4chrt25464-21/usr/sbin/munin19:32:180
302762475,35sleep030281-21hddtemp_smartct19:40:380
299802470,2chrt29978-21/usr/sbin/munin22:11:140
133712472,38sleep013382-21kworker/u2:021:46:360
10754904617,22cyclictest0-21swapper22:03:250
10754904611,20cyclictest23370-21gcc00:27:270
1075490456,20cyclictest13114-21ssh00:12:030
1075490435,18cyclictest15869-21ntp_states21:01:170
10754904215,10cyclictest27694-21sshd20:28:400
10754904112,12cyclictest16703-21irqrtprio20:10:450
1075490404,10cyclictest4566-21ntpq19:50:550
10754903914,8cyclictest23332-21ntpq20:21:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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