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2026-09-18 - 00:10

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 Thu Sep 17, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
163579912471218,23cyclictest2614-21strings12:25:231
163569911211080,30cyclictest0-21swapper/007:25:140
163579910821074,5cyclictest0-21swapper/107:25:111
150232694645,33sleep00-21swapper/007:20:180
159422564518,32sleep10-21swapper/107:21:131
1635699260236,21cyclictest0-21swapper/012:25:230
120662990,5sleep012073-21missed_timers12:50:230
62272800,8sleep00-21swapper/012:35:190
1635699457,16cyclictest0-21swapper/008:51:590
1635699435,15cyclictest2225-21dbus-daemon08:08:380
1635699428,15cyclictest2225-21dbus-daemon09:18:410
1635699427,6cyclictest2225-21dbus-daemon12:01:140
1635699419,14cyclictest6064-21grep08:20:170
1635699411,21cyclictest1321-21seq12:21:290
16356994112,13cyclictest2401-21NetworkManager11:04:580
1635699409,12cyclictest3226-21needreboot09:35:220
1635699401,23cyclictest11461-21runrttasks11:24:090
1635799392,22cyclictest6534-21df_inode09:45:131
16357993816,8cyclictest22-21ksoftirqd/111:55:361
16357993816,8cyclictest22-21ksoftirqd/111:34:031
16357993816,8cyclictest22-21ksoftirqd/111:34:021
16357993816,8cyclictest22-21ksoftirqd/110:54:541
16357993816,8cyclictest22-21ksoftirqd/110:22:231
16357993816,6cyclictest22-21ksoftirqd/112:00:101
1635699388,13cyclictest18376-21python11:40:270
16357993716,7cyclictest22-21ksoftirqd/111:23:551
16357993715,8cyclictest22-21ksoftirqd/109:03:101
16357993715,7cyclictest22-21ksoftirqd/108:55:361
16357993615,7cyclictest22-21ksoftirqd/110:15:211
16357993615,7cyclictest22-21ksoftirqd/108:26:321
16357993615,7cyclictest22-21ksoftirqd/108:26:321
16357993615,7cyclictest22-21ksoftirqd/107:57:171
16357993614,8cyclictest22-21ksoftirqd/111:10:001
16357993614,8cyclictest22-21ksoftirqd/110:45:241
16357993614,6cyclictest22-21ksoftirqd/109:32:461
253292351,3sleep124727-21/usr/sbin/munin07:45:221
16357993514,7cyclictest22-21ksoftirqd/112:47:581
16357993514,7cyclictest22-21ksoftirqd/112:41:191
16357993514,7cyclictest22-21ksoftirqd/112:35:051
16357993514,7cyclictest22-21ksoftirqd/108:12:071
1635799349,12cyclictest22-21ksoftirqd/111:39:401
1635799343,7cyclictest15855-21missed_timers08:45:221
16357993419,5cyclictest32268-21lockfile-remove12:20:001
16357993413,7cyclictest22-21ksoftirqd/112:53:511
16357993412,8cyclictest22-21ksoftirqd/111:16:251
16357993412,8cyclictest22-21ksoftirqd/111:04:131
1635699342,28cyclictest30852-21diskstats08:00:120
226712331,28sleep122672-21/usr/sbin/munin09:05:111
1635799338,12cyclictest3286-21runrttasks10:58:311
16357993312,7cyclictest22-21ksoftirqd/108:16:081
16357993312,7cyclictest22-21ksoftirqd/107:35:151
1635799331,20cyclictest32409-21/usr/sbin/munin12:20:141
16357993311,8cyclictest16354-21cyclictest10:09:161
16357993310,7cyclictest13868-21iostat_ios08:40:211
1635699331,28cyclictest15856-21grep11:35:140
40882321,4sleep14091-21watchsnmpd09:39:011
322602321,4sleep111565-21gdbus08:04:561
200752321,28sleep020231-21tail07:30:280
16357993210,8cyclictest16354-21cyclictest08:33:191
16357993210,6cyclictest22-21ksoftirqd/109:51:571
16357993210,12cyclictest22-21ksoftirqd/112:33:131
1635699321,5cyclictest2221-21cron09:05:010
1635699321,26cyclictest22612-21taskset11:52:480
245402311,3sleep10-21swapper/110:31:231
198352311,4sleep119839-21irqstats11:45:201
1635799318,5cyclictest0-21swapper/111:40:281
1635799317,12cyclictest0-21swapper/109:59:201
1635799312,8cyclictest11996-21df_inode11:25:131
1635799312,13cyclictest19536-21hddtemp_smartct07:30:171
16357993113,5cyclictest16777-21timerwakeupswit10:10:291
16357993110,11cyclictest22-21ksoftirqd/107:42:191
16356993122,5cyclictest12719-21grep10:00:230
16356993110,17cyclictest322472chrt10:52:210
122022311,26sleep112206-21ntp_states08:35:261
316682301,5sleep10-21swapper/109:27:311
1635799308,5cyclictest0-21swapper/110:25:101
1635799308,12cyclictest22-21ksoftirqd/110:00:561
1635799308,12cyclictest22-21ksoftirqd/109:15:041
1635799308,12cyclictest22-21ksoftirqd/108:24:511
1635799301,6cyclictest22834-21idleruntime-cro11:55:001
16357993015,11cyclictest25563-21sensors_temp09:10:271
16357993010,7cyclictest22-21ksoftirqd/112:06:151
1635699301,4cyclictest81rcu_preempt10:22:220
1635699301,4cyclictest81rcu_preempt09:48:090
16356993011,4cyclictest3286-21runrttasks10:26:480
1635799297,8cyclictest16354-21cyclictest12:10:521
1635799295,7cyclictest0-21swapper/108:50:231
1635799295,12cyclictest0-21swapper/109:40:081
1635799294,9cyclictest28620-21diskstats09:20:131
1635799292,9cyclictest27874-21awk10:40:251
1635799292,8cyclictest3286-21runrttasks11:11:361
1635799292,13cyclictest32728-21diskstats08:05:131
1635699294,19cyclictest32764-21memory09:30:200
16356992919,5cyclictest29658-21unixbench_multi07:55:300
1635699291,5cyclictest81rcu_preempt10:15:210
1635699291,4cyclictest81rcu_preempt11:55:360
16356992910,5cyclictest22968-21/usr/sbin/munin09:05:160
156462291,5sleep00-21swapper/010:10:100
146112291,5sleep00-21swapper/008:41:100
126922291,5sleep00-21swapper/008:35:570
114212291,5sleep00-21swapper/009:57:010
110362291,5sleep00-21swapper/008:33:160
90012281,5sleep00-21swapper/012:41:530
317902281,5sleep00-21swapper/012:15:330
283082281,5sleep00-21swapper/012:08:190
279022281,3sleep00-21swapper/007:50:480
261992281,5sleep00-21swapper/009:14:220
247402281,5sleep00-21swapper/010:33:280
244302281,5sleep00-21swapper/007:43:420
166442281,5sleep00-21swapper/008:47:480
1635799281,8cyclictest26847-21expr07:50:091
1635699284,18cyclictest890-21memory10:55:210
1635699282,7cyclictest19728-21ntp_states08:55:240
16356992819,6cyclictest25373-21latency07:45:210
16356992818,6cyclictest30209-21udevd10:46:340
16356992818,6cyclictest22151-21unixbench_multi07:35:280
1635699281,7cyclictest8812-21grep08:25:290
1635699281,7cyclictest8812-21grep08:25:280
1635699281,4cyclictest81rcu_preempt08:12:060
1635699281,20cyclictest29365-21/usr/sbin/munin12:10:220
1635699280,4cyclictest81rcu_preempt11:34:030
1635699280,4cyclictest81rcu_preempt11:34:020
132992281,5sleep00-21swapper/011:28:460
109492281,5sleep00-21swapper/012:47:190
59422271,4sleep00-21swapper/009:43:330
52552271,5sleep00-21swapper/012:32:070
1635799275,6cyclictest0-21swapper/110:35:031
16356992718,5cyclictest20964-21sh11:50:000
16356992711,13cyclictest25371-21grep10:35:170
153602271,5sleep00-21swapper/010:08:450
51442261,5sleep00-21swapper/008:15:460
16356992610,13cyclictest2225-21dbus-daemon11:15:450
298602251,5sleep00-21swapper/009:23:110
1635699252,18cyclictest8957-21ntp_states09:50:250
1635699251,4cyclictest81rcu_preempt11:10:000
1635699251,12cyclictest27873-21ps10:40:260
16356992415,6cyclictest3-21ksoftirqd/009:26:350
16356992415,5cyclictest6796-21grep11:10:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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