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2026-07-01 - 18:16

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 376 highest latencies:
System rack9slot4s (updated Wed Jul 01, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44639912051185,16cyclictest22376-21smartctl12:25:281
44629911181107,7cyclictest0-21swapper/007:26:530
42432515418,30sleep10-21swapper/107:23:141
31852489408,64sleep00-21swapper/007:20:180
446399230222,5cyclictest0-21swapper/107:26:531
4462997970,6cyclictest0-21swapper/012:25:280
446399772,39cyclictest31683-21if_eth011:25:181
446399761,41cyclictest6769-21cat07:30:031
446399753,33cyclictest3181-21diskstats10:10:151
446399751,40cyclictest5369-21iostat10:15:181
446399741,39cyclictest16472-21grep12:10:231
446399722,36cyclictest26784-21chrt11:10:551
446399721,37cyclictest27252-21chrt09:46:581
446399711,37cyclictest27575-21awk12:40:181
446399711,36cyclictest29740-21chrt08:29:351
446399711,36cyclictest25794-21taskset08:17:461
446399711,36cyclictest15937-21chrt09:16:441
446399702,35cyclictest17576-21chrt10:47:501
446399702,33cyclictest26490-21diskstats08:20:151
446399702,33cyclictest20703-21hddtemp_smartct09:30:301
446399701,50cyclictest6759-21chrt08:54:041
446399701,37cyclictest32355-21chrt12:53:351
446399701,36cyclictest31597-21chrt08:34:211
446399701,36cyclictest2644-21chrt08:41:131
446399701,36cyclictest24868-21chrt12:34:121
446399701,35cyclictest25083-21sed09:40:291
446399701,35cyclictest17939-21chrt09:22:491
446399701,35cyclictest10770-21chrt09:05:021
446399701,33cyclictest32116-21df_inode08:35:151
446399692,31cyclictest27942-21iostat_ios11:15:201
446399692,31cyclictest14997-21chrt07:50:131
446399691,38cyclictest11804-21chrt10:31:291
446399691,36cyclictest15642-21cat12:10:011
446399691,35cyclictest30908-21chrt09:55:571
446399691,35cyclictest22026-21chrt08:07:371
446399691,33cyclictest8281-21users08:55:331
446399691,32cyclictest29835-21iostat11:20:181
446399682,32cyclictest19081-21iostat_ios08:00:201
446399682,32cyclictest18920-21irqstats09:25:211
446399682,32cyclictest1362-21ntp_states11:30:231
446399681,37cyclictest9596-21chrt11:51:561
446399681,37cyclictest774-21cat10:05:011
446399681,37cyclictest2438-21taskset10:07:541
446399681,37cyclictest11705-21chrt11:59:161
446399681,37cyclictest10019-21chrt10:27:271
446399681,34cyclictest13377-21chrt12:01:591
446399661,38cyclictest15024-21cat10:40:221
446399661,31cyclictest20080-21iostat_ios12:20:211
446399651,44cyclictest8974-21aten_r4power_po09:00:111
446399641,32cyclictest7813-21taskset11:47:541
446399632,44cyclictest25184-21chrt11:08:451
446399631,38cyclictest27985-21cstates09:50:131
446399631,37cyclictest3300-21aten_r4power_en08:45:111
446399621,38cyclictest17586-21/usr/sbin/munin12:15:101
446399612,39cyclictest13116-21df07:45:141
446399611,39cyclictest3286-21runrttasks10:57:211
446399611,39cyclictest3286-21runrttasks10:57:201
446399611,39cyclictest22183-21egrep09:35:111
446399602,36cyclictest9627-21if_eth007:35:181
446399602,36cyclictest22986-21if_eth008:10:181
446399591,37cyclictest2503-21aten_r4power_po11:35:101
446399591,37cyclictest16588-21/usr/sbin/munin07:55:281
446399591,37cyclictest12269-21seq07:40:521
446399591,36cyclictest19376-21chrt10:52:031
446399591,31cyclictest3286-21runrttasks12:47:061
446399581,37cyclictest25702-21taskset12:35:191
446399581,37cyclictest23290-21chrt11:03:351
446399581,35cyclictest8178-21chrt10:22:511
446399581,34cyclictest4431-21/usr/sbin/munin11:40:271
58262570,9sleep0446299cyclictest08:50:230
446399571,34cyclictest12300-21chrt10:35:071
446399551,42cyclictest13163-21hddtemp_smartct09:10:171
213342550,23sleep03-21ksoftirqd/009:30:420
264392540,7sleep0446299cyclictest09:45:200
446299351,20cyclictest30006-21grep09:55:160
446299341,21cyclictest7683-21basename07:30:160
446299339,4cyclictest81rcu_preempt08:15:100
446299334,4cyclictest81rcu_preempt08:10:160
4462993323,6cyclictest25220-21/usr/sbin/munin09:40:310
110752330,8sleep0446299cyclictest11:55:270
446299323,15cyclictest13433-21iostat_ios07:45:200
446299321,21cyclictest0-21swapper/011:09:580
446299321,19cyclictest13678-21/usr/sbin/munin09:10:270
446299317,4cyclictest81rcu_preempt10:50:000
446299317,11cyclictest0-21swapper/009:25:310
446299317,11cyclictest0-21swapper/009:15:280
446299316,4cyclictest81rcu_preempt10:10:220
446299312,4cyclictest81rcu_preempt08:40:010
446299306,4cyclictest81rcu_preempt07:40:010
446299304,4cyclictest81rcu_preempt09:20:220
446299303,5cyclictest81rcu_preempt11:39:000
446299302,15cyclictest0-21swapper/010:35:240
446299302,13cyclictest19172-21memory08:00:230
446299301,24cyclictest8406-21munin-run10:25:010
446299301,18cyclictest30050-21ntpdc11:20:230
446299301,11cyclictest0-21swapper/007:53:250
446299295,12cyclictest0-21swapper/010:50:160
446299292,4cyclictest81rcu_preempt12:38:490
446299292,14cyclictest7059-21aten_r4power_en08:55:130
446299292,13cyclictest3286-21runrttasks10:09:570
446299292,13cyclictest29067-21mailstats08:25:290
446299291,4cyclictest81rcu_preempt07:40:120
446299291,16cyclictest5446-21python11:40:270
446299291,15cyclictest9202-21/usr/sbin/munin09:00:150
4462992910,6cyclictest31124-21unixbench_multi08:30:290
4462992910,5cyclictest21056-21unixbench_singl10:55:280
4462992910,5cyclictest21056-21unixbench_singl10:55:270
279022291,24sleep027926-21basename08:25:000
179002291,9sleep00-21swapper/007:55:560
446299282,14cyclictest13868-21cut12:05:110
446299281,4cyclictest81rcu_preempt08:05:150
446299281,16cyclictest0-21swapper/009:35:110
4462992811,5cyclictest31976-21hddtemp_smartct10:00:160
446299281,14cyclictest844-21/usr/sbin/munin11:30:140
446299281,14cyclictest27182-21cron11:15:000
446299272,13cyclictest3300-21wget08:45:120
4462992717,6cyclictest8376-21cpuspeed_turbos11:50:120
4462992717,6cyclictest30619-21cron12:50:000
446299271,13cyclictest3286-21runrttasks12:10:320
446299271,13cyclictest17847-21expr12:15:130
446299271,13cyclictest11149-21fschecks_count09:05:150
4462992711,14cyclictest0-21swapper/011:15:420
4462992710,6cyclictest6717-21cut11:45:170
248942271,5sleep00-21swapper/012:34:310
232892271,5sleep00-21swapper/011:03:350
446299269,6cyclictest6073-21taskset10:15:410
446299269,5cyclictest28542-21ntp_states09:50:240
446299268,5cyclictest11887-21chrt10:32:210
446299263,10cyclictest14559-21fschecks_count10:40:140
446299261,8cyclictest0-21swapper/010:25:130
446299261,20cyclictest325492sleep011:27:040
446299261,14cyclictest0-21swapper/008:40:210
283342261,5sleep00-21swapper/012:41:050
209952261,5sleep00-21swapper/012:23:000
446299254,9cyclictest81rcu_preempt12:50:310
133102251,5sleep00-21swapper/012:01:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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