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2025-12-11 - 06:17

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 Thu Dec 11, 2025 00:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
196792950,2chrt19680-21ntpq23:54:141
196792950,2chrt19680-21ntpq23:54:141
245162830,3chrt0-21swapper/300:09:003
245162830,3chrt0-21swapper/300:09:003
172502780,3sleep017238-21cron22:23:530
172502780,3sleep017238-21cron22:23:530
283392680,3sleep20-21swapper/222:51:162
283392680,3sleep20-21swapper/222:51:162
80202630,2chrt0-21swapper/121:59:021
80202630,2chrt0-21swapper/121:59:021
240752610,1sleep3431rcuc/319:49:073
240752610,1sleep3431rcuc/319:49:073
55722580,4sleep05573-21sshd21:49:160
128642570,3sleep10-21swapper/120:44:091
128642570,3sleep10-21swapper/120:44:091
274652560,3sleep00-21swapper/022:49:090
274652560,3sleep00-21swapper/022:49:090
21752510,2sleep02178-21unixbench_singl20:14:170
21752510,2sleep02178-21unixbench_singl20:14:170
149592510,3sleep20-21swapper/222:14:182
150732480,2sleep1281ktimers/120:49:161
10840994623,21cyclictest27152-21fschecks_time22:49:071
10840994623,21cyclictest27152-21fschecks_time22:49:071
10840994511,30cyclictest17555-21seq20:57:381
10840994511,30cyclictest17555-21seq20:57:381
10840994511,30cyclictest17555-21seq20:57:381
1084099448,25cyclictest0-21swapper/121:19:161
1084099448,25cyclictest0-21swapper/121:19:161
253032420,11sleep1281ktimers/121:18:581
10840994220,21cyclictest10792-21cyclictest00:39:191
10840994220,21cyclictest10792-21cyclictest00:39:191
128762410,3sleep30-21swapper/322:09:183
128762410,3sleep30-21swapper/322:09:183
10840994016,22cyclictest13495-21latency_hist22:13:541
10840994016,22cyclictest13495-21latency_hist22:13:541
32812390,2sleep13283-21awk20:19:081
1084099392,6cyclictest21998-21ntp_states22:34:131
1084099392,6cyclictest21998-21ntp_states22:34:131
147562380,2sleep114955-21grep22:14:181
1084099381,9cyclictest24520-21latency_hist00:09:001
1084099381,9cyclictest24520-21latency_hist00:09:001
1084099381,1cyclictest0-21swapper/122:29:301
1084099381,1cyclictest0-21swapper/122:29:301
46222370,3sleep30-21swapper/323:14:133
39832370,2sleep04091-21fschecks_time23:14:070
220672370,3sleep30-21swapper/319:44:013
220672370,3sleep30-21swapper/319:44:013
146692370,3sleep20-21swapper/219:24:062
146692370,3sleep20-21swapper/219:24:062
10840993727,8cyclictest25093-21kernelversion00:09:121
10840993727,8cyclictest25093-21kernelversion00:09:121
1084099371,9cyclictest18870-21sshd22:25:331
1084099371,9cyclictest18870-21sshd22:25:331
1084099371,7cyclictest32043-21sshd23:00:391
1084099371,7cyclictest32043-21sshd23:00:391
1084099371,7cyclictest0-21swapper/121:02:371
1084099371,7cyclictest0-21swapper/121:02:371
1084099371,10cyclictest26683-21fschecks_time00:14:071
1084099371,10cyclictest26683-21fschecks_time00:14:071
1084099371,10cyclictest11877-21iwlist23:34:071
1084099371,10cyclictest11877-21iwlist23:34:071
1084099370,9cyclictest394-21snmpd19:47:581
1084099370,9cyclictest394-21snmpd19:47:581
1084099362,9cyclictest17181-21df_inode23:49:051
1084099362,9cyclictest17181-21df_inode23:49:051
1084099362,13cyclictest15945-21ntp_states23:44:141
1084099362,13cyclictest15945-21ntp_states23:44:141
1084099361,8cyclictest29442-21tune2fs21:29:071
1084099361,8cyclictest29442-21tune2fs21:29:071
1084099361,8cyclictest24508-21sshd22:40:361
1084099361,8cyclictest24508-21sshd22:40:361
1084099361,7cyclictest31133-21sshd20:07:141
10840993614,20cyclictest32230-21ntp_offset20:09:121
10840993614,20cyclictest32230-21ntp_offset20:09:121
1084099361,10cyclictest24672-21netstat19:49:131
1084099361,10cyclictest24672-21netstat19:49:131
73802350,3sleep30-21swapper/320:29:153
27582350,3chrt0-21swapper/321:44:083
27582350,3chrt0-21swapper/321:44:083
1084099351,9cyclictest5748-21/usr/sbin/munin23:19:161
1084099351,9cyclictest5748-21/usr/sbin/munin23:19:161
1084099351,8cyclictest1492-21taskset23:05:281
1084099351,8cyclictest1492-21taskset23:05:281
1084099351,7cyclictest3870-21munin-node23:14:041
1084099351,7cyclictest2762-21sed21:44:081
1084099351,7cyclictest2762-21sed21:44:081
1084099351,6cyclictest32448-21sshd21:35:221
1084099351,6cyclictest32448-21sshd21:35:221
1084099351,5cyclictest8923-21users23:24:181
1084099351,5cyclictest8923-21users23:24:181
1084099351,11cyclictest20532-21ntp_states21:04:141
1084099351,10cyclictest663-21runrttasks21:10:451
1084099351,10cyclictest663-21runrttasks21:10:451
1084099350,7cyclictest11551-21sshd22:08:161
1084099350,7cyclictest11551-21sshd22:08:161
1084099350,2cyclictest17055-21192.168.115.40-manager22:21:331
1084099350,2cyclictest17055-21192.168.115.40-manager22:21:331
10839993529,4cyclictest10792-21cyclictest23:09:080
105252350,3sleep30-21swapper/323:29:163
105252350,3sleep30-21swapper/323:29:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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