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2026-06-23 - 11:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot1s.osadl.org (updated Tue Jun 23, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1330121170,3sleep30-21swapper/322:38:213
1330121170,3sleep30-21swapper/322:38:213
1330121170,3sleep30-21swapper/322:38:213
1682721130,2chrt16826-21awk19:53:240
1682721130,2chrt16826-21awk19:53:240
1682721130,2chrt16826-21awk19:53:240
440221040,4sleep00-21swapper/020:48:190
440221040,4sleep00-21swapper/020:48:190
1645121040,3sleep30-21swapper/322:48:143
2983221030,2chrt0-21swapper/320:28:243
2983221030,2chrt0-21swapper/320:28:243
2983221030,2chrt0-21swapper/320:28:243
46522970,2sleep04653-21fschecks_count23:43:140
46522970,2sleep04653-21fschecks_count23:43:140
46522970,2sleep04653-21fschecks_count23:43:140
184892780,3sleep30-21swapper/300:18:233
184892780,3sleep30-21swapper/300:18:233
87112690,2chrt8703-21tail19:33:180
87112690,2chrt8703-21tail19:33:180
36392650,4chrt0-21swapper/322:13:173
36392650,4chrt0-21swapper/322:13:173
36392650,4chrt0-21swapper/322:13:173
325242590,2sleep30-21swapper/322:03:203
325242590,2sleep30-21swapper/322:03:203
309952570,5sleep0171ktimers/020:33:160
309952570,5sleep0171ktimers/020:33:160
309952570,5sleep0171ktimers/020:33:160
767995646,5cyclictest0-21swapper/100:03:231
767995646,5cyclictest0-21swapper/100:03:231
765995550,3cyclictest0-21swapper/000:03:090
765995550,3cyclictest0-21swapper/000:03:090
765995550,3cyclictest0-21swapper/000:03:090
70922520,4chrt0-21swapper/323:48:203
70922520,4chrt0-21swapper/323:48:203
192912500,2sleep019295-21wc21:28:150
192912500,2sleep019295-21wc21:28:150
76799471,7cyclictest30170-21runrttasks20:31:351
76799471,7cyclictest30170-21runrttasks20:31:351
76799471,7cyclictest30170-21runrttasks20:31:351
164862470,4chrt0-21swapper/300:13:203
164862470,4chrt0-21swapper/300:13:203
164862470,4chrt0-21swapper/300:13:203
168512460,3sleep20-21swapper/221:23:122
168512460,3sleep20-21swapper/221:23:122
76799430,7cyclictest17085-21seq00:14:221
76799430,7cyclictest17085-21seq00:14:221
76799430,7cyclictest17085-21seq00:14:221
76599425,30cyclictest13250-21/usr/sbin/munin00:03:260
76599425,30cyclictest13250-21/usr/sbin/munin00:03:260
76799410,2cyclictest700-21192.168.115.40-manager00:12:241
76799410,2cyclictest700-21192.168.115.40-manager00:12:241
76799410,2cyclictest700-21192.168.115.40-manager00:12:241
139332410,2chrt13899-21fschecks_time19:48:140
139332410,2chrt13899-21fschecks_time19:48:140
767994016,21cyclictest0-21swapper/100:33:231
767994016,21cyclictest0-21swapper/100:33:231
765994033,5cyclictest29150-21cron23:23:000
765994033,5cyclictest29150-21cron23:23:000
76799391,11cyclictest32076-21cut22:03:151
76799391,11cyclictest32076-21cut22:03:151
76799381,7cyclictest1497450/usr/sbin/munin21:18:111
76799381,7cyclictest1497450/usr/sbin/munin21:18:111
76799381,7cyclictest1497450/usr/sbin/munin21:18:111
767993814,21cyclictest0-21swapper/121:28:191
767993814,21cyclictest0-21swapper/121:28:191
76799380,12cyclictest11811-21load21:08:191
76799380,12cyclictest11811-21load21:08:191
767993725,10cyclictest30765-21processes21:58:211
767993725,10cyclictest30765-21processes21:58:211
767993725,10cyclictest30765-21processes21:58:211
767993725,10cyclictest30765-21processes21:58:211
76799371,8cyclictest4439-21grep19:23:121
76799371,8cyclictest15089-21taskset19:49:501
76799371,8cyclictest15089-21taskset19:49:501
76799371,7cyclictest11492-21/usr/sbin/munin22:33:221
76799371,7cyclictest11492-21/usr/sbin/munin22:33:221
76799371,7cyclictest11492-21/usr/sbin/munin22:33:221
765993731,4cyclictest7741-21processes22:23:210
765993731,4cyclictest7741-21processes22:23:210
320112370,2sleep131219-21/usr/sbin/munin23:28:211
320112370,2sleep131219-21/usr/sbin/munin23:28:211
226942370,3sleep20-21swapper/221:38:142
226942370,3sleep20-21swapper/221:38:142
76799361,9cyclictest28150-21sshd20:24:331
76799361,9cyclictest28150-21sshd20:24:331
76799361,9cyclictest28150-21sshd20:24:331
76799361,8cyclictest22930-21taskset00:32:191
76799361,8cyclictest22930-21taskset00:32:191
76799361,8cyclictest22930-21taskset00:32:191
76799361,8cyclictest21409-21sshd22:59:351
76799361,8cyclictest21409-21sshd22:59:351
76799361,8cyclictest20754-21sshd20:05:331
76799361,8cyclictest20754-21sshd20:05:331
76799361,12cyclictest12092-21perl19:43:131
76799361,12cyclictest12092-21perl19:43:131
767993610,24cyclictest14678-21systemd-journal20:21:021
76799360,8cyclictest16070-21taskset22:47:431
76799360,8cyclictest16070-21taskset22:47:431
99082350,3sleep20-21swapper/219:38:112
99082350,3sleep20-21swapper/219:38:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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