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2026-05-05 - 20:51

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 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.
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 highest latencies:
System rack9slot4s (updated Tue May 05, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
144589912281188,27cyclictest14882-21/usr/sbin/munin07:25:140
144599911411098,24cyclictest14378-21ntp_states10:25:251
144599911351114,17cyclictest14711-21grep07:25:141
143162672626,30sleep10-21swapper/107:24:031
135262526478,32sleep00-21swapper/007:20:260
320842950,6sleep01445899cyclictest09:35:120
22202770,3sleep041ktimersoftd/012:45:230
14458997655,18cyclictest0-21swapper/010:25:240
302562620,3sleep1211ktimersoftd/108:03:501
170702620,3sleep00-21swapper/010:34:180
265022510,4sleep041ktimersoftd/007:55:010
215442390,4sleep041ktimersoftd/010:45:160
1445999391,7cyclictest22-21ksoftirqd/110:05:221
1445999391,7cyclictest22-21ksoftirqd/109:15:181
1445999391,7cyclictest22-21ksoftirqd/108:20:281
1445999391,6cyclictest22-21ksoftirqd/111:40:261
1445999381,7cyclictest22-21ksoftirqd/112:50:151
1445999381,7cyclictest22-21ksoftirqd/112:45:171
1445999381,7cyclictest22-21ksoftirqd/112:30:111
1445999381,7cyclictest22-21ksoftirqd/108:40:121
1445999381,7cyclictest22-21ksoftirqd/107:55:181
230772371,32sleep123135-21cat12:15:171
1445999374,4cyclictest22-21ksoftirqd/107:50:131
1445999371,7cyclictest22-21ksoftirqd/108:35:101
1445999371,7cyclictest22-21ksoftirqd/107:30:111
1445999371,7cyclictest22-21ksoftirqd/107:30:111
1445999371,6cyclictest22-21ksoftirqd/112:40:231
1445999371,6cyclictest22-21ksoftirqd/111:55:111
1445999371,6cyclictest22-21ksoftirqd/111:35:101
1445999371,6cyclictest22-21ksoftirqd/111:20:111
1445999371,6cyclictest22-21ksoftirqd/108:25:301
1445999371,6cyclictest22-21ksoftirqd/107:40:111
1445999371,6cyclictest22-21ksoftirqd/107:35:181
1445999361,7cyclictest22-21ksoftirqd/109:30:171
1445999361,5cyclictest22-21ksoftirqd/112:35:271
1445899361,22cyclictest13845-21grep11:50:210
1445999358,4cyclictest81rcu_preempt10:40:161
1445999352,4cyclictest22-21ksoftirqd/111:25:131
14459993519,4cyclictest22-21ksoftirqd/108:45:251
1445999351,7cyclictest22-21ksoftirqd/110:15:081
1445999351,5cyclictest22-21ksoftirqd/112:20:121
1445899352,21cyclictest21231-21df07:40:110
1445899351,21cyclictest6672-21python11:30:280
14459993426,4cyclictest22-21ksoftirqd/111:50:221
14459993419,4cyclictest22-21ksoftirqd/108:50:151
1445999341,6cyclictest811-21grep09:35:311
1445999341,6cyclictest22-21ksoftirqd/108:55:281
14459993412,6cyclictest22-21ksoftirqd/111:35:001
83372331,4sleep08355-21ntp_states11:35:230
1445999331,7cyclictest22-21ksoftirqd/112:05:121
1445999331,6cyclictest22-21ksoftirqd/109:27:001
14459993315,14cyclictest11442-21taskset11:45:121
14459993311,4cyclictest81rcu_preempt10:30:261
1445899337,14cyclictest81rcu_preempt12:25:000
1445899333,5cyclictest81rcu_preempt09:30:100
294192320,7sleep11445999cyclictest11:05:251
250122321,4sleep025021-21hddtemp_smartct09:15:170
1445999321,4cyclictest81rcu_preempt11:10:181
1445999321,4cyclictest81rcu_preempt11:10:171
1445999321,15cyclictest0-21swapper/108:10:291
14459993210,4cyclictest81rcu_preempt11:00:231
14459993210,4cyclictest81rcu_preempt09:05:231
14459993210,4cyclictest81rcu_preempt08:05:241
1445899321,14cyclictest0-21swapper/011:15:240
209012310,4sleep0111rcuc/010:44:550
1445999319,4cyclictest81rcu_preempt10:50:221
1445999311,4cyclictest81rcu_preempt10:55:111
1445999311,4cyclictest81rcu_preempt10:49:231
1445999311,4cyclictest81rcu_preempt10:15:011
1445999311,4cyclictest81rcu_preempt09:10:251
1445999311,4cyclictest81rcu_preempt07:45:141
1445999311,27cyclictest0-21swapper/109:40:301
1445899315,5cyclictest81rcu_preempt07:45:160
1445899313,16cyclictest31839-21tr12:40:010
14458993115,5cyclictest28645-21aten_r4power_en11:05:120
1445899311,4cyclictest81rcu_preempt10:10:460
1445999308,4cyclictest81rcu_preempt08:15:121
1445999301,4cyclictest81rcu_preempt10:35:201
1445899304,12cyclictest11564-21packagekitd11:25:150
1445899301,4cyclictest81rcu_preempt08:19:370
1445899301,15cyclictest27434-21/usr/sbin/munin12:25:290
14458993011,15cyclictest279122chrt09:22:420
14458993010,6cyclictest1015-21switchtime08:10:280
1445899300,4cyclictest81rcu_preempt08:59:250
71112291,5sleep00-21swapper/008:26:390
54572291,5sleep00-21swapper/008:23:580
242822291,5sleep00-21swapper/012:19:530
16942291,5sleep00-21swapper/009:42:140
1445999291,4cyclictest81rcu_preempt12:00:231
1445999291,4cyclictest81rcu_preempt12:00:221
1445999291,4cyclictest81rcu_preempt09:56:211
1445999291,4cyclictest81rcu_preempt09:20:211
1445999291,4cyclictest81rcu_preempt09:00:121
14459992913,5cyclictest22-21ksoftirqd/109:45:161
14459992913,4cyclictest22-21ksoftirqd/112:10:251
14459992912,4cyclictest81rcu_preempt09:53:371
14459992910,7cyclictest22-21ksoftirqd/112:28:571
1445899292,5cyclictest81rcu_preempt10:35:140
1445899291,4cyclictest81rcu_preempt11:24:520
1445899291,19cyclictest0-21swapper/010:07:080
14458992911,6cyclictest21948-21unixbench_multi09:05:290
1445899291,15cyclictest10181-21cut10:15:120
1445899291,13cyclictest10020-21iostat11:40:190
14458992910,6cyclictest31294-21ntp_states11:10:230
14458992910,6cyclictest31294-21ntp_states11:10:230
14458992910,5cyclictest28870-21sort08:00:160
1445899290,4cyclictest81rcu_preempt12:54:200
1445899290,4cyclictest81rcu_preempt09:50:390
129122291,5sleep00-21swapper/011:48:580
123792291,5sleep00-21swapper/010:20:210
89982281,5sleep00-21swapper/008:31:480
318652281,5sleep00-21swapper/008:06:020
1445999289,4cyclictest81rcu_preempt11:15:111
1445999284,4cyclictest81rcu_preempt10:20:591
14459992810,7cyclictest22-21ksoftirqd/108:30:121
1445899289,6cyclictest19103-21basename07:35:100
1445899289,11cyclictest0-21swapper/010:52:060
1445899282,4cyclictest81rcu_preempt08:52:220
1445899282,13cyclictest3242-21python09:45:280
1445899282,13cyclictest23251-21irqstats09:10:200
1445899282,13cyclictest21021-21fschecks_count12:10:140
1445899282,13cyclictest19123-21df_inode12:05:130
1445899282,13cyclictest17745-21irqstats07:30:210
1445899282,13cyclictest17745-21irqstats07:30:200
1445899282,13cyclictest17238-21df12:00:120
1445899282,13cyclictest17238-21df12:00:120
1445899281,14cyclictest32017-21/usr/sbin/munin12:40:090
1445899281,14cyclictest0-21swapper/009:55:240
1445899281,13cyclictest27402-21memory11:00:210
14458992810,6cyclictest20464-21taskset09:03:310
261352271,5sleep00-21swapper/010:55:540
145742271,4sleep00-21swapper/008:46:010
1445999273,4cyclictest81rcu_preempt10:02:131
1445899273,11cyclictest11534-21cpuspeed_turbos08:40:140
1445899272,14cyclictest0-21swapper/011:55:230
1445899271,13cyclictest26740-21cpuspeed_turbos07:55:140
14458992710,5cyclictest9765-21diskstats08:35:120
1445899267,6cyclictest29485-21head12:30:300
1445899263,11cyclictest6911-21taskset10:03:020
1445899261,13cyclictest28986-21/usr/sbin/munin09:25:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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