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2025-12-08 - 23:07

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 Mon Dec 08, 2025 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39199912541212,28cyclictest4357-21diskstats07:25:150
39209912121169,26cyclictest0-21swapper/107:25:131
39209912081189,15cyclictest28240-21ssh09:25:331
36102596516,63sleep00-21swapper/007:22:260
34152429331,32sleep10-21swapper/107:20:311
391999225215,7cyclictest0-21swapper/009:25:320
1465421000,4sleep041ktimersoftd/010:19:450
69142970,3sleep00-21swapper/011:51:290
21082730,4sleep10-21swapper/112:20:261
51192720,4sleep041ktimersoftd/011:15:550
152122491,4sleep015118-21/usr/sbin/munin10:20:150
205222451,27sleep020533-21ssh09:51:180
182812440,5sleep0111rcuc/009:49:590
89202430,2sleep08921-21fschecks_count07:35:180
3920994321,12cyclictest22-21ksoftirqd/110:13:331
3920994320,11cyclictest22-21ksoftirqd/111:38:001
3920994317,6cyclictest22-21ksoftirqd/110:55:241
3920994226,5cyclictest22-21ksoftirqd/112:09:301
3920994226,5cyclictest22-21ksoftirqd/111:02:301
3920994222,8cyclictest22-21ksoftirqd/111:50:271
3920994126,4cyclictest22-21ksoftirqd/111:17:481
3920994126,4cyclictest22-21ksoftirqd/110:27:201
3920994126,4cyclictest22-21ksoftirqd/110:23:421
3920994125,6cyclictest22-21ksoftirqd/112:35:531
3920994125,5cyclictest22-21ksoftirqd/110:47:301
3920994125,5cyclictest22-21ksoftirqd/109:30:431
3920994125,5cyclictest22-21ksoftirqd/109:24:231
3920994122,8cyclictest22-21ksoftirqd/109:43:181
3920994121,9cyclictest22-21ksoftirqd/109:13:151
248042410,4sleep00-21swapper/009:22:320
3920994025,4cyclictest22-21ksoftirqd/111:30:401
3920994025,4cyclictest22-21ksoftirqd/109:52:081
3920994025,4cyclictest22-21ksoftirqd/109:38:591
3920994024,5cyclictest22-21ksoftirqd/112:52:161
3920994024,5cyclictest22-21ksoftirqd/111:58:241
3920994024,5cyclictest22-21ksoftirqd/111:58:241
3920994021,8cyclictest22-21ksoftirqd/110:31:201
3920994018,5cyclictest22-21ksoftirqd/110:16:021
3920994015,7cyclictest22-21ksoftirqd/112:18:531
3920993924,4cyclictest22-21ksoftirqd/112:31:561
3920993923,5cyclictest22-21ksoftirqd/110:05:491
3920993922,5cyclictest22-21ksoftirqd/108:18:341
3920993918,9cyclictest22-21ksoftirqd/111:49:281
3920993918,6cyclictest22-21ksoftirqd/111:21:231
3920993918,6cyclictest22-21ksoftirqd/111:21:221
3920993917,7cyclictest22-21ksoftirqd/110:43:151
3920993914,10cyclictest22-21ksoftirqd/109:45:181
3920993823,4cyclictest22-21ksoftirqd/112:45:281
3920993822,6cyclictest22-21ksoftirqd/108:12:011
3920993822,5cyclictest22-21ksoftirqd/110:54:531
3920993822,5cyclictest22-21ksoftirqd/109:04:041
3920993817,6cyclictest22-21ksoftirqd/109:56:131
3920993816,7cyclictest22-21ksoftirqd/110:04:061
3920993816,6cyclictest22-21ksoftirqd/112:11:501
3920993723,4cyclictest22-21ksoftirqd/112:25:141
3920993722,5cyclictest22-21ksoftirqd/108:54:071
3920993722,4cyclictest22-21ksoftirqd/111:12:441
3920993721,6cyclictest22-21ksoftirqd/107:57:471
3920993721,6cyclictest22-21ksoftirqd/107:51:271
3920993716,7cyclictest22-21ksoftirqd/111:28:251
3920993714,6cyclictest22-21ksoftirqd/112:04:521
3920993622,4cyclictest22-21ksoftirqd/109:15:351
3920993614,7cyclictest22-21ksoftirqd/111:09:231
3920993614,6cyclictest22-21ksoftirqd/112:44:501
3920993612,10cyclictest20224-21cpuspeed_turbos08:05:131
64792351,30sleep06497-21df_inode12:25:140
3920993520,4cyclictest22-21ksoftirqd/110:35:311
3920993519,6cyclictest22-21ksoftirqd/108:42:171
392099351,20cyclictest27835-21df_inode11:40:171
391999358,5cyclictest9025-21memory11:20:220
391999358,5cyclictest9025-21memory11:20:220
391999357,4cyclictest0-21swapper/011:30:030
391999356,5cyclictest81rcu_preempt11:01:480
391999351,13cyclictest16222-21fschecks_count12:35:170
3920993417,6cyclictest22-21ksoftirqd/108:32:311
391999341,16cyclictest1521-21ssh12:54:270
240412341,3sleep024133-21memory09:55:230
392099338,6cyclictest0-21swapper/107:37:381
392099332,12cyclictest0-21swapper/108:22:471
3920993317,6cyclictest22-21ksoftirqd/109:08:301
391999338,3cyclictest0-21swapper/008:00:130
391999334,4cyclictest81rcu_preempt12:15:120
391999334,4cyclictest81rcu_preempt12:07:330
391999334,4cyclictest81rcu_preempt11:25:220
391999332,4cyclictest81rcu_preempt12:47:370
3919993323,6cyclictest7518-21ssh10:45:220
3919993313,6cyclictest0-21swapper/010:10:180
3919993313,16cyclictest28907-21kernelversion10:00:220
391999331,14cyclictest7692awk11:45:240
281582331,4sleep128241-21memory08:25:201
3920993217,5cyclictest22-21ksoftirqd/107:32:501
391999325,4cyclictest81rcu_preempt09:35:410
391999324,4cyclictest81rcu_preempt12:33:010
391999324,4cyclictest81rcu_preempt10:07:080
391999324,4cyclictest81rcu_preempt09:16:320
391999323,5cyclictest81rcu_preempt09:10:000
391999323,13cyclictest81rcu_preempt11:10:090
391999322,11cyclictest0-21swapper/012:24:320
391999321,4cyclictest81rcu_preempt10:55:280
391999321,4cyclictest81rcu_preempt08:50:260
391999321,12cyclictest0-21swapper/011:07:290
391999318,5cyclictest3020-21runrttasks08:27:270
391999315,5cyclictest81rcu_preempt09:31:120
391999313,4cyclictest81rcu_preempt10:51:220
391999312,14cyclictest0-21swapper/012:11:590
391999311,4cyclictest81rcu_preempt12:02:500
391999311,4cyclictest81rcu_preempt07:55:530
3919993114,13cyclictest3-21ksoftirqd/008:15:360
3919993112,6cyclictest22990-21df_inode11:35:150
391999311,25cyclictest12782-21ssh11:58:010
391999311,25cyclictest12782-21ssh11:58:010
104842311,5sleep00-21swapper/007:40:130
392099305,14cyclictest40950irq/93-i91507:40:181
391999304,13cyclictest15460-21/usr/sbin/munin07:50:310
391999303,6cyclictest9645-21/usr/sbin/munin09:40:230
391999303,4cyclictest81rcu_preempt10:30:530
391999301,25cyclictest27173-21runrttasks08:22:470
3919993012,4cyclictest2945-21awk10:40:250
3919993011,6cyclictest27841-21/usr/sbin/munin11:40:160
3919993011,6cyclictest12819-21perl09:10:170
391999301,15cyclictest2220-21dbus-daemon08:45:010
247872301,3sleep024797-21ssh12:44:310
79142291,5sleep00-21swapper/007:30:470
392099295,5cyclictest0-21swapper/108:00:131
392099292,7cyclictest3020-21runrttasks07:49:071
391999299,14cyclictest4235-21runrttasks08:47:420
391999292,17cyclictest0-21swapper/008:55:140
391999292,12cyclictest8573-21cpuspeed_turbos09:00:150
391999291,4cyclictest81rcu_preempt08:05:120
3919992912,5cyclictest22731-21ntpq08:10:260
3919992911,6cyclictest29452-21ssh10:35:020
3919992910,6cyclictest12803-21hddtemp_smartct07:45:210
392099284,8cyclictest3035-21diskstats08:45:171
392099281,12cyclictest7314-21ntpq08:55:241
391999281,13cyclictest2220-21dbus-daemon08:39:170
3919992810,5cyclictest20529-21hddtemp_smartct10:25:210
392099271,7cyclictest3020-21runrttasks08:37:181
391999272,12cyclictest30453-21python08:30:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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