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2026-09-17 - 07:30

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 Wed Sep 16, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
200049912301213,14cyclictest0-21swapper/107:25:111
200039911661129,33cyclictest20199-21wget07:25:120
200049911321113,15cyclictest0-21swapper/108:50:311
198312653598,39sleep10-21swapper/107:23:461
182342562517,30sleep00-21swapper/007:20:080
20003992464,238cyclictest0-21swapper/008:50:300
1156921060,4sleep00-21swapper/011:15:270
324512540,8sleep02000399cyclictest12:10:270
20004995124,4cyclictest22-21ksoftirqd/111:20:001
20004995121,4cyclictest22-21ksoftirqd/111:37:451
20004994827,4cyclictest22-21ksoftirqd/110:50:001
20004994821,8cyclictest22-21ksoftirqd/112:00:281
20004994816,6cyclictest22-21ksoftirqd/107:40:161
20004994816,5cyclictest22-21ksoftirqd/111:10:241
20004994815,6cyclictest22-21ksoftirqd/108:43:031
20004994815,5cyclictest22-21ksoftirqd/108:31:261
20004994815,5cyclictest22-21ksoftirqd/108:31:251
20004994813,5cyclictest22-21ksoftirqd/108:25:261
20004994725,4cyclictest22-21ksoftirqd/111:30:131
20004994725,4cyclictest22-21ksoftirqd/107:30:061
20004994717,6cyclictest22-21ksoftirqd/112:50:151
20004994716,6cyclictest22-21ksoftirqd/109:35:141
20004994716,6cyclictest22-21ksoftirqd/109:25:251
20004994716,6cyclictest22-21ksoftirqd/109:15:141
20004994716,5cyclictest22-21ksoftirqd/110:40:181
20004994715,6cyclictest22-21ksoftirqd/111:25:121
20004994714,6cyclictest22-21ksoftirqd/110:35:271
20004994714,5cyclictest22-21ksoftirqd/111:55:221
20004994625,4cyclictest22-21ksoftirqd/112:35:291
20004994615,5cyclictest22-21ksoftirqd/112:48:271
20004994614,6cyclictest22-21ksoftirqd/107:58:111
20004994613,6cyclictest22-21ksoftirqd/110:10:291
117722461,28sleep011863-21mailstats09:50:260
20004994516,6cyclictest22-21ksoftirqd/110:05:001
20004994514,5cyclictest22-21ksoftirqd/109:30:301
20004994424,4cyclictest22-21ksoftirqd/107:50:001
20004994417,9cyclictest22-21ksoftirqd/111:20:121
20004994417,9cyclictest22-21ksoftirqd/111:20:111
2000499436,5cyclictest31243-21/usr/sbin/munin12:10:151
2000499429,6cyclictest3286-21runrttasks09:53:081
20004994226,4cyclictest22-21ksoftirqd/111:55:011
20004994225,5cyclictest22-21ksoftirqd/112:35:011
20004994223,4cyclictest22-21ksoftirqd/111:45:221
20004994222,4cyclictest22-21ksoftirqd/112:40:111
20004994222,4cyclictest22-21ksoftirqd/109:20:251
20004994222,4cyclictest22-21ksoftirqd/108:05:161
20004994215,4cyclictest22-21ksoftirqd/109:57:321
20004994210,5cyclictest22-21ksoftirqd/108:24:491
2000499419,5cyclictest22-21ksoftirqd/108:15:111
2000499418,6cyclictest22-21ksoftirqd/109:14:011
2000499418,6cyclictest22-21ksoftirqd/109:14:001
2000499417,6cyclictest22-21ksoftirqd/108:49:551
2000499415,6cyclictest16557-21/usr/sbin/munin10:05:281
20004994126,4cyclictest22-21ksoftirqd/109:05:011
20004994126,4cyclictest22-21ksoftirqd/108:35:171
20004994125,4cyclictest22-21ksoftirqd/108:55:121
20004994125,4cyclictest22-21ksoftirqd/108:00:121
20004994123,5cyclictest22-21ksoftirqd/107:35:291
20004994122,4cyclictest22-21ksoftirqd/112:08:201
20004994121,4cyclictest22-21ksoftirqd/112:20:051
20004994119,4cyclictest22-21ksoftirqd/110:15:261
20004994115,10cyclictest22-21ksoftirqd/112:25:101
2000499409,4cyclictest81rcu_preempt09:05:171
2000499404,9cyclictest22-21ksoftirqd/108:10:111
20004994026,4cyclictest22-21ksoftirqd/110:55:151
20004994026,4cyclictest22-21ksoftirqd/110:50:171
20004994026,4cyclictest22-21ksoftirqd/110:20:161
20004994025,4cyclictest22-21ksoftirqd/110:30:011
20004994022,4cyclictest22-21ksoftirqd/111:40:121
20004994022,4cyclictest22-21ksoftirqd/111:00:141
20004994022,4cyclictest22-21ksoftirqd/109:40:241
20004994012,5cyclictest22-21ksoftirqd/107:50:131
20004993925,4cyclictest22-21ksoftirqd/110:30:131
20004993925,4cyclictest22-21ksoftirqd/109:45:161
20004993921,4cyclictest22-21ksoftirqd/111:05:131
20004993824,4cyclictest22-21ksoftirqd/112:15:121
2000399384,11cyclictest81rcu_preempt11:39:520
2000399372,22cyclictest13636-21hddtemp_smartct08:30:150
2000399372,22cyclictest13636-21hddtemp_smartct08:30:140
2000399361,22cyclictest7493-21chrt08:15:120
2000399351,9cyclictest81rcu_preempt07:44:250
2000399351,11cyclictest81rcu_preempt12:33:440
2000399349,13cyclictest9097-21ntp_kernel_err12:35:230
2000399349,12cyclictest9107-21fschecks_time11:10:170
2000399342,20cyclictest6378-21latency_hist12:30:010
20003993414,5cyclictest3912-21unixbench_singl12:20:290
2000399341,11cyclictest81rcu_preempt12:44:500
2000399331,20cyclictest11552-21df08:25:130
20003993310,7cyclictest18727-21diskstats10:10:140
2000399329,6cyclictest26605-21sensors_temp11:55:250
2000399329,11cyclictest10143-21needreboot08:20:230
2000399328,12cyclictest24645-21if_eth010:25:180
2000399323,8cyclictest81rcu_preempt09:40:460
20003993214,5cyclictest22720-21chrt07:30:120
20003993213,7cyclictest5202-21/usr/sbin/munin11:00:140
2000399321,20cyclictest2393-21mailstats09:25:270
2000399321,20cyclictest17364-21fschecks_time08:40:170
45222311,9sleep00-21swapper/010:57:530
2000399311,26cyclictest165522sleep008:38:080
20003993112,14cyclictest14999-21python12:50:270
2000399311,18cyclictest24881-21df07:35:140
20003993110,6cyclictest1052-21grep07:55:290
2000399306,11cyclictest17930-21idleruntime-cro11:34:590
2000399302,15cyclictest10292-21users09:45:300
2000399302,14cyclictest7384-21ls08:15:000
2000399301,4cyclictest81rcu_preempt10:21:120
20003993014,13cyclictest3-21ksoftirqd/009:33:590
20003993012,5cyclictest31609-21munin-node10:45:120
2000399301,16cyclictest29052-21/usr/sbin/munin10:35:310
2000399301,11cyclictest13414-21kernelversion09:55:220
20003993010,6cyclictest21391-21seq11:41:590
292012291,5sleep00-21swapper/012:05:000
2000399298,10cyclictest24017-21diskstats11:50:140
2000399294,4cyclictest81rcu_preempt10:30:290
2000399293,14cyclictest0-21swapper/007:52:370
2000399292,14cyclictest4336-21iostat_ios08:05:200
2000399292,14cyclictest28683-21awk12:00:280
20003992912,5cyclictest5751-21hddtemp_smartct09:35:180
20003992912,5cyclictest17384-21ntp_states10:05:240
20003992912,5cyclictest12407-21diskstats12:45:150
20003992910,6cyclictest19869-21/usr/sbin/munin08:45:290
162102291,9sleep00-21swapper/010:03:060
81552281,5sleep00-21swapper/011:06:250
305702281,5sleep00-21swapper/009:15:190
2000399283,18cyclictest22535-21memory11:45:230
2000399282,21cyclictest12935-21perl11:20:170
2000399282,21cyclictest12935-21perl11:20:170
2000399282,13cyclictest29008-21ntp_kernel_pll_09:10:230
2000399282,13cyclictest29008-21ntp_kernel_pll_09:10:230
20003992819,5cyclictest26706-21fschecks_count09:05:150
20003992811,5cyclictest372-21/usr/sbin/munin09:20:250
2000399281,14cyclictest26173-21pidof09:05:010
32602271,4sleep00-21swapper/008:01:520
2000399279,6cyclictest0-21swapper/011:28:330
2000399271,4cyclictest81rcu_preempt10:15:120
2000399271,14cyclictest31498-21cat10:45:000
2000399271,14cyclictest28865-21smartctl07:45:160
2000399271,14cyclictest23148-21/usr/sbin/munin08:55:200
15352271,4sleep00-21swapper/010:50:160
2000399252,11cyclictest81rcu_preempt12:15:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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