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2026-04-13 - 19:59

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 Apr 13, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207859911651156,6cyclictest0-21swapper/107:25:221
207849911441106,25cyclictest21424-21smartctl07:25:180
203662550505,30sleep00-21swapper/007:21:110
206222461416,30sleep10-21swapper/107:23:551
2078499440424,12cyclictest111rcuc/009:25:020
267972810,9sleep02078499cyclictest11:20:210
176942800,8sleep02078499cyclictest11:45:040
224472740,3sleep122445-21grep08:50:271
253872690,3sleep125388-21aten_r4power_cu07:35:111
231612610,5sleep1201rcuc/111:50:181
52252590,7sleep12078599cyclictest08:05:201
101252570,2sleep110126-21rm09:56:161
2078599511,17cyclictest16878-21ls09:30:191
35222480,7sleep02078499cyclictest08:00:250
57162460,24sleep122-21ksoftirqd/110:59:191
170742440,9sleep02078499cyclictest10:04:170
2078599414,34cyclictest1102-21cron12:34:591
2078599397,28cyclictest0-21swapper/111:20:561
2078599396,4cyclictest81rcu_preempt09:26:001
20784993915,18cyclictest12012-21iostat_ios11:05:210
22622380,8sleep12078599cyclictest12:01:501
2078499389,13cyclictest30497-21gdbus11:58:230
2078499384,17cyclictest9772-21cut10:30:140
2078499382,11cyclictest0-21swapper/012:18:490
79722371,4sleep07982-21ssh11:35:030
2078599373,13cyclictest0-21swapper/110:03:121
20785993728,6cyclictest0-21swapper/110:26:151
20785993728,5cyclictest0-21swapper/110:53:351
20785993711,5cyclictest81rcu_preempt12:35:121
2078499379,13cyclictest29210-21ssh09:43:050
20784993712,12cyclictest0-21swapper/010:43:140
168062371,4sleep016866-21iostat11:10:210
165812370,4sleep1201rcuc/111:10:161
297002360,5sleep1201rcuc/107:45:181
2078599363,31cyclictest0-21swapper/112:29:361
2078599363,31cyclictest0-21swapper/108:31:551
2078599362,31cyclictest0-21swapper/111:16:561
2078599362,30cyclictest0-21swapper/110:40:151
2078499365,28cyclictest0-21swapper/010:39:550
2078499363,5cyclictest0-21swapper/012:29:550
2078499362,30cyclictest0-21swapper/009:51:150
20784993620,12cyclictest32092-21cron10:20:000
20784993614,5cyclictest31672-21ssh11:25:250
20784993614,5cyclictest31672-21ssh11:25:240
2078599354,5cyclictest81rcu_preempt10:35:141
2078599351,9cyclictest15104-21cron12:50:001
2078499354,15cyclictest2206-21dbus-daemon12:30:170
2078499352,30cyclictest0-21swapper/011:16:360
2078599346,5cyclictest81rcu_preempt11:04:121
2078599346,17cyclictest0-21swapper/111:09:281
2078599342,29cyclictest0-21swapper/109:37:401
2078599342,28cyclictest0-21swapper/111:42:161
2078499348,5cyclictest81rcu_preempt12:47:450
2078499347,4cyclictest81rcu_preempt10:57:580
2078499343,5cyclictest21705-21cpuspeed_turbos08:50:140
20784993425,5cyclictest17691-21latency_hist08:40:010
2078499341,7cyclictest8170-21ssh10:28:080
2078499341,14cyclictest3547-21diskstats11:30:150
156192340,2sleep015620-21sh09:29:270
259302331,4sleep125941-21sh09:40:101
2078599333,28cyclictest0-21swapper/109:08:161
2078599331,5cyclictest81rcu_preempt12:06:331
2078599331,30cyclictest0-21swapper/108:14:361
2078499334,25cyclictest5372-21smartctl12:05:160
2078499333,17cyclictest0-21swapper/012:43:110
2078499331,7cyclictest17234-21ssh11:44:360
20784993315,5cyclictest3-21ksoftirqd/009:47:340
20784993314,6cyclictest7169-21iostat_ios11:00:190
20784993311,5cyclictest0-21swapper/010:53:090
12792330,7sleep02078499cyclictest07:55:250
226072321,4sleep122621-21ssh10:10:051
2078599326,10cyclictest25250-21ntp_states10:45:281
2078599324,4cyclictest81rcu_preempt11:28:301
2078599324,4cyclictest81rcu_preempt11:28:291
2078599324,3cyclictest81rcu_preempt12:50:351
2078599323,4cyclictest81rcu_preempt09:45:511
2078599323,4cyclictest81rcu_preempt08:29:071
2078599322,6cyclictest0-21swapper/110:33:371
2078599322,4cyclictest81rcu_preempt12:13:071
2078599322,18cyclictest0-21swapper/112:18:061
2078599321,28cyclictest3552-21ssh11:30:151
2078599321,28cyclictest29456-21ssh11:56:151
2078499328,6cyclictest2658-21awk12:35:280
2078499328,12cyclictest9913-21ssh12:10:130
2078499324,12cyclictest30497-21gdbus09:35:230
20784993217,5cyclictest3-21ksoftirqd/007:39:210
20784993213,6cyclictest18521-21/usr/sbin/munin08:40:220
2078499321,28cyclictest0-21swapper/009:19:340
2078499321,19cyclictest19218-21unixbench_multi10:05:290
20784993211,12cyclictest3-21ksoftirqd/009:11:430
2078499321,10cyclictest0-21swapper/009:07:580
203012320,5sleep0111rcuc/012:20:250
86982311,4sleep18709-21sh12:41:491
2078599316,4cyclictest81rcu_preempt11:45:141
2078599313,4cyclictest81rcu_preempt09:00:201
2078599312,4cyclictest81rcu_preempt12:23:011
2078599312,12cyclictest0-21swapper/110:20:111
2078599311,5cyclictest81rcu_preempt09:10:291
2078599311,4cyclictest81rcu_preempt09:22:321
2078599310,3cyclictest81rcu_preempt11:35:441
2078499317,12cyclictest0-21swapper/007:43:120
2078499316,5cyclictest23982-21timerandwakeup10:10:300
2078499312,26cyclictest132-21jbd2/sda2-812:04:060
20784993116,4cyclictest3-21ksoftirqd/010:23:010
20784993115,5cyclictest3-21ksoftirqd/012:50:160
2078499311,28cyclictest0-21swapper/008:14:560
2078499311,27cyclictest0-21swapper/009:55:550
2078499311,19cyclictest5853-21runrttasks08:05:370
2078499311,14cyclictest30497-21gdbus11:51:130
20784993110,6cyclictest24612-21diskstats10:45:160
2078599305,4cyclictest81rcu_preempt07:40:341
2078599301,4cyclictest81rcu_preempt07:50:101
2078599301,4cyclictest30087-21ssh10:17:051
20784993013,5cyclictest25754-21fw_packets09:00:160
2078499301,27cyclictest0-21swapper/008:30:550
2078499301,26cyclictest111-21usb-storage07:30:410
20784993011,15cyclictest0-21swapper/009:33:150
210762291,5sleep00-21swapper/008:47:240
2078599299,7cyclictest30497-21gdbus08:47:431
2078599294,4cyclictest81rcu_preempt08:41:181
20785992920,5cyclictest17871-21ssh10:05:111
2078599291,4cyclictest81rcu_preempt09:15:451
2078599291,4cyclictest81rcu_preempt07:33:241
2078599290,4cyclictest81rcu_preempt09:50:231
2078499292,14cyclictest2329-21NetworkManager08:59:110
2078599281,4cyclictest81rcu_preempt08:23:071
20784992820,6cyclictest0-21swapper/008:19:150
2078499281,16cyclictest31188-21cpu07:50:120
20784992810,6cyclictest12685-21iostat08:25:180
10672281,4sleep11073-21iostat_ios07:55:211
2078599277,5cyclictest40550irq/92-i91508:40:011
2078599274,8cyclictest2960-21diskstats08:00:161
2078599273,4cyclictest81rcu_preempt08:16:291
2078499271,12cyclictest30875-21latency_hist07:50:010
20784992710,5cyclictest11361-21cat08:20:290
2078599252,9cyclictest24201-21ntp_states08:55:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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