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2026-07-01 - 20:47

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 Wed Jul 01, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321242880,2chrt32122-21fw_packets08:13:220
321242880,2chrt32122-21fw_packets08:13:220
204742660,2sleep1595-21sshd12:02:181
204742660,2sleep1595-21sshd12:02:181
204742660,2sleep1595-21sshd12:02:181
296652650,3sleep30-21swapper/312:25:073
296652650,3sleep30-21swapper/312:25:073
225742590,2sleep20-21swapper/210:38:332
225742590,2sleep20-21swapper/210:38:332
225742590,2sleep20-21swapper/210:38:332
202942560,3chrt0-21swapper/310:33:313
202942560,3chrt0-21swapper/310:33:313
202942560,3chrt0-21swapper/310:33:313
236472530,2sleep20-21swapper/207:48:322
236472530,2sleep20-21swapper/207:48:322
233732530,2sleep023471-21cat07:48:310
233732530,2sleep023471-21cat07:48:310
227932480,3sleep20-21swapper/209:13:302
227932480,3sleep20-21swapper/209:13:302
100442480,1sleep010049-21/usr/sbin/munin10:08:200
100442480,1sleep010049-21/usr/sbin/munin10:08:200
100442480,1sleep010049-21/usr/sbin/munin10:08:200
9520994721,8cyclictest0-21swapper/012:20:180
9520994721,8cyclictest0-21swapper/012:20:180
9520994618,8cyclictest0-21swapper/011:42:170
9520994618,8cyclictest0-21swapper/011:42:170
9520994437,4cyclictest700-21192.168.115.40-manager10:25:150
9520994437,4cyclictest700-21192.168.115.40-manager10:25:150
9520994437,4cyclictest700-21192.168.115.40-manager10:25:150
9520994220,12cyclictest181rcu_preempt12:04:180
9520994220,12cyclictest181rcu_preempt12:04:180
9520994220,12cyclictest181rcu_preempt12:04:180
70002420,3sleep20-21swapper/209:58:252
70002420,3sleep20-21swapper/209:58:252
70002420,3sleep20-21swapper/209:58:252
9520994114,16cyclictest13498-21taskset10:16:320
9520994114,16cyclictest13498-21taskset10:16:320
9520994114,16cyclictest13498-21taskset10:16:320
9520994113,10cyclictest20005-21taskset09:08:170
9520994113,10cyclictest20005-21taskset09:08:170
9520994113,10cyclictest20005-21taskset09:08:170
9520994113,10cyclictest20005-21taskset09:08:170
9520994016,8cyclictest25201-21df_inode10:48:210
9520994010,12cyclictest3263-21strings09:48:260
9520994010,12cyclictest3263-21strings09:48:260
188722400,2sleep018929-21grep07:38:220
188722400,2sleep018929-21grep07:38:220
188722400,2sleep018929-21grep07:38:220
9520993930,7cyclictest24812-21threads09:18:310
9520993930,7cyclictest24812-21threads09:18:310
9520993928,9cyclictest700-21192.168.115.40-manager08:38:420
9520993928,9cyclictest700-21192.168.115.40-manager08:38:420
9520993928,8cyclictest0-21swapper/009:35:140
9520993928,8cyclictest0-21swapper/009:35:140
9520993928,8cyclictest0-21swapper/009:35:140
9520993926,9cyclictest700-21192.168.115.40-manager07:36:400
9520993926,9cyclictest700-21192.168.115.40-manager07:36:400
9520993916,9cyclictest1899-21sed11:13:150
9520993916,9cyclictest1899-21sed11:13:150
9520993914,10cyclictest13871-21taskset08:48:390
9520993914,10cyclictest13871-21taskset08:48:390
88152390,2sleep20-21swapper/208:38:212
88152390,2sleep20-21swapper/208:38:212
9520993833,4cyclictest545-21in:imuxsock11:03:080
9520993833,4cyclictest545-21in:imuxsock11:03:080
9520993833,4cyclictest545-21in:imuxsock11:03:080
9520993814,8cyclictest18818-21sed11:58:160
9520993814,8cyclictest18818-21sed11:58:160
9520993814,11cyclictest26762-21awk10:53:090
9520993814,11cyclictest26762-21awk10:53:090
9520993813,9cyclictest12108-21seq08:45:180
9520993813,9cyclictest12108-21seq08:45:180
9520993813,7cyclictest32542-21/usr/sbin/munin09:38:310
9520993813,10cyclictest16735-21chrt11:52:070
9520993813,10cyclictest16735-21chrt11:52:070
9520993812,12cyclictest31464-21chrt08:11:130
9520993812,12cyclictest31464-21chrt08:11:130
9520993812,12cyclictest31464-21chrt08:11:130
51442380,2sleep30-21swapper/309:53:283
51442380,2sleep30-21swapper/309:53:283
51442380,2sleep30-21swapper/309:53:283
166722380,2sleep116686-21grep07:33:081
166722380,2sleep116686-21grep07:33:081
156972380,2sleep30-21swapper/307:28:273
156972380,2sleep30-21swapper/307:28:273
9520993727,9cyclictest700-21192.168.115.40-manager08:59:570
9520993727,9cyclictest700-21192.168.115.40-manager08:59:570
9520993716,9cyclictest31889-21sed12:33:150
9520993716,9cyclictest31889-21sed12:33:150
9520993713,9cyclictest20311-21chrt12:00:110
9520993713,9cyclictest20311-21chrt12:00:110
9520993713,9cyclictest20311-21chrt12:00:110
9520993712,10cyclictest7684-21sshd09:59:180
9520993712,10cyclictest7684-21sshd09:59:180
9520993712,10cyclictest7684-21sshd09:59:180
9520993629,5cyclictest700-21192.168.115.40-manager08:18:420
9520993629,5cyclictest700-21192.168.115.40-manager08:18:420
9520993629,5cyclictest700-21192.168.115.40-manager08:18:420
9520993629,4cyclictest700-21192.168.115.40-manager08:29:420
9520993629,4cyclictest700-21192.168.115.40-manager08:29:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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