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2024-04-25 - 02:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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 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.
Unexpectedly long latencies may be caused by SMIs
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 rack9slot4s (updated Wed Apr 24, 2024 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128009912591226,29cyclictest12963-21wget07:25:100
128009912591226,29cyclictest12963-21wget07:25:100
128019911911181,7cyclictest0-21swapper/107:25:091
128019911911181,7cyclictest0-21swapper/107:25:081
128019911801154,22cyclictest30724-21iostat08:15:201
124552616517,31sleep00-21swapper/007:21:590
126732565520,31sleep10-21swapper/107:24:151
12800996155,3cyclictest0-21swapper/008:15:200
1280199480,15cyclictest29468-21taskset12:34:241
1280199480,15cyclictest1126-21snmpd08:30:031
1280199444,10cyclictest3020-21runrttasks12:20:221
1280199441,14cyclictest3020-21runrttasks12:50:151
1280199414,17cyclictest9222-21cpuspeed_turbos11:40:121
1280199411,17cyclictest1126-21snmpd09:55:201
203992400,6sleep020397-21gpgv07:49:590
1280199405,11cyclictest22-21ksoftirqd/109:50:441
1280199401,9cyclictest0-21swapper/111:30:321
1280199401,8cyclictest0-21swapper/111:37:261
1280199401,8cyclictest0-21swapper/109:40:141
1280199401,8cyclictest0-21swapper/107:50:341
12800994017,7cyclictest9391-21diskstats08:45:170
1280199395,12cyclictest14466-21aten_r4power_po10:25:121
1280199392,9cyclictest0-21swapper/111:03:111
1280199391,9cyclictest0-21swapper/112:46:241
1280199391,9cyclictest0-21swapper/112:46:241
1280199391,9cyclictest0-21swapper/111:12:551
1280199391,9cyclictest0-21swapper/110:40:131
1280199391,9cyclictest0-21swapper/109:10:111
1280199391,8cyclictest0-21swapper/110:55:171
1280199391,8cyclictest0-21swapper/110:20:271
1280199391,8cyclictest0-21swapper/108:50:131
1280199381,9cyclictest0-21swapper/108:42:481
1280199381,8cyclictest0-21swapper/112:19:131
1280099384,10cyclictest81rcu_preempt08:09:030
1280199376,13cyclictest22-21ksoftirqd/108:55:131
1280199374,15cyclictest29291-21timerandwakeup11:05:341
1280199374,11cyclictest0-21swapper/107:35:121
1280199371,17cyclictest27901-21/usr/sbin/munin09:35:271
1280099373,10cyclictest81rcu_preempt10:04:020
105182371,4sleep06203-21packagekitd11:42:550
1280199368,6cyclictest22-21ksoftirqd/112:35:061
1280199367,6cyclictest22-21ksoftirqd/112:06:141
1280199365,18cyclictest22-21ksoftirqd/108:03:121
1280199361,14cyclictest1126-21snmpd09:05:111
1280199361,10cyclictest6157-21ntp_states08:35:301
1280099362,11cyclictest81rcu_preempt12:16:230
85632351,30sleep08605-21cat10:10:000
1280199358,6cyclictest22-21ksoftirqd/110:47:541
1280199358,6cyclictest22-21ksoftirqd/110:17:081
1280199358,6cyclictest22-21ksoftirqd/109:29:471
1280199358,6cyclictest22-21ksoftirqd/109:22:591
1280199358,6cyclictest22-21ksoftirqd/108:21:381
1280199358,6cyclictest16321-21sshd10:30:471
1280199358,5cyclictest3955-21iostat11:25:191
1280199358,5cyclictest22-21ksoftirqd/109:46:371
1280199356,6cyclictest22-21ksoftirqd/107:48:501
1280199355,4cyclictest16212-21runrttasks09:02:301
1280199351,15cyclictest3020-21runrttasks12:13:391
1280199351,12cyclictest20967-21iostat09:15:201
1280199350,14cyclictest1126-21snmpd07:34:511
1280099356,15cyclictest2220-21dbus-daemon10:55:240
1280099355,4cyclictest81rcu_preempt09:50:250
1280099351,14cyclictest0-21swapper/008:52:420
1280199348,6cyclictest22-21ksoftirqd/111:53:091
1280199348,5cyclictest27427-21sshd09:31:471
1280199347,6cyclictest22-21ksoftirqd/112:40:471
1280199347,6cyclictest22-21ksoftirqd/112:00:511
1280199347,6cyclictest22-21ksoftirqd/111:19:201
1280199347,6cyclictest22-21ksoftirqd/110:54:261
1280199347,5cyclictest22-21ksoftirqd/111:22:281
1280199347,5cyclictest22-21ksoftirqd/110:00:221
1280199346,6cyclictest22-21ksoftirqd/108:07:541
1280199346,5cyclictest22-21ksoftirqd/108:45:331
1280199343,10cyclictest0-21swapper/110:07:471
1280199343,10cyclictest0-21swapper/107:42:551
1280099344,17cyclictest6204-21gdbus10:27:160
1280099341,10cyclictest81rcu_preempt12:00:230
1280099341,10cyclictest81rcu_preempt08:36:400
1280199337,6cyclictest22-21ksoftirqd/111:56:561
1280199337,5cyclictest22-21ksoftirqd/111:45:301
1280199337,5cyclictest22-21ksoftirqd/107:59:321
1280199330,11cyclictest27665-21munin-run12:30:011
1280099334,5cyclictest81rcu_preempt12:25:290
1280099331,12cyclictest0-21swapper/011:37:270
1280199326,6cyclictest22-21ksoftirqd/110:10:121
1280199326,6cyclictest18481-21sshd10:38:471
12801993210,9cyclictest2620-21cat08:25:351
1280099322,18cyclictest24531-21aten_r4power_cu08:00:080
1280099321,4cyclictest81rcu_preempt12:13:320
1280099321,20cyclictest0-21swapper/011:50:030
1280099320,10cyclictest81rcu_preempt10:38:190
325292311,4sleep032606-21latency11:15:220
177622311,5sleep00-21swapper/007:39:000
1280199311,8cyclictest29617-21taskset08:11:201
1280099315,12cyclictest14989-21fschecks_count11:55:150
1280099312,4cyclictest81rcu_preempt11:05:150
1280099312,16cyclictest7707-21/usr/sbin/munin08:40:170
1280099311,4cyclictest81rcu_preempt09:55:050
1280099311,3cyclictest81rcu_preempt12:52:210
1280099311,3cyclictest81rcu_preempt10:50:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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