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2026-05-07 - 21:34

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 May 07, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267669912001158,37cyclictest27195-21df_inode07:25:130
267669912001158,37cyclictest27195-21df_inode07:25:130
267679911791146,29cyclictest26992-21chrt07:25:111
267679911791146,29cyclictest26992-21chrt07:25:111
266652644597,31sleep10-21swapper/107:24:321
264452557459,32sleep00-21swapper/007:22:100
72692910,8sleep02676699cyclictest07:55:230
240262870,9sleep02676699cyclictest11:30:270
26766993910,14cyclictest1281-21seq11:56:330
2676699381,24cyclictest22454-21/usr/sbin/munin10:00:260
2676699371,15cyclictest184062fschecks_count08:25:160
2676699351,22cyclictest17905-21irqstats11:15:190
26766993410,12cyclictest23636-21sort10:05:160
2676799337,5cyclictest81rcu_preempt07:50:271
26767993323,6cyclictest7826-21df12:15:121
2676699332,18cyclictest0-21swapper/012:03:000
26766993313,7cyclictest30466-21python07:30:260
181342331,28sleep117305-21/usr/sbin/munin11:15:251
175742331,28sleep117653-21memory12:40:211
26767993218,8cyclictest27025-21diskstats11:40:141
2676699327,13cyclictest11564-21packagekitd11:39:100
2676699321,4cyclictest81rcu_preempt08:35:010
2676699321,27cyclictest27154-21wget10:15:120
244882321,27sleep124507-21ntp_states08:40:241
21192321,27sleep12283-21perl12:00:151
74622311,6sleep10-21swapper/110:47:061
280282311,26sleep128089-21sh10:15:271
26767993115,4cyclictest22-21ksoftirqd/109:10:161
2676699312,15cyclictest2987-21tune2fs09:10:140
2676699311,4cyclictest81rcu_preempt07:45:140
2676699311,27cyclictest0-21swapper/010:48:100
2676699311,19cyclictest28397-21taskset11:44:330
26766993110,7cyclictest8329-21awk12:15:210
105112311,26sleep010595-21aten_r4power_vo08:05:130
71942301,5sleep00-21swapper/012:13:050
53892301,5sleep00-21swapper/012:08:510
2676799305,4cyclictest81rcu_preempt12:31:121
2676799305,4cyclictest81rcu_preempt11:55:441
2676799305,4cyclictest81rcu_preempt08:23:261
2676799304,19cyclictest10745-21iostat_ios09:30:191
2676799301,4cyclictest81rcu_preempt12:23:101
2676799301,4cyclictest81rcu_preempt08:59:311
2676699308,11cyclictest2394-21cat10:35:110
26766993013,5cyclictest12674-21df_inode08:10:130
26766993012,7cyclictest3-21ksoftirqd/009:55:200
26766993010,7cyclictest1328-21grep07:40:180
147352301,5sleep00-21swapper/012:33:110
95692291,5sleep00-21swapper/009:25:410
71792291,5sleep10-21swapper/112:12:581
37772291,5sleep10-21swapper/112:05:011
318072291,5sleep00-21swapper/011:50:590
306652291,5sleep00-21swapper/008:56:160
304482291,5sleep00-21swapper/010:22:330
2676799297,8cyclictest2225-21dbus-daemon12:37:451
2676799296,4cyclictest81rcu_preempt07:34:501
2676799295,4cyclictest81rcu_preempt10:33:121
2676799294,4cyclictest81rcu_preempt10:01:481
2676799294,18cyclictest4450-21diskstats10:40:151
26767992920,6cyclictest1722-21ls09:05:291
26767992918,7cyclictest12599-21tr08:10:121
2676799291,4cyclictest81rcu_preempt11:23:141
2676799291,4cyclictest81rcu_preempt11:23:131
2676799291,4cyclictest81rcu_preempt09:45:001
2676799291,3cyclictest0-21swapper/111:25:221
2676799291,15cyclictest21078-21unixbench_multi08:30:281
2676799290,4cyclictest81rcu_preempt08:02:121
2676699293,7cyclictest10746-21irqstats09:30:200
2676699291,4cyclictest81rcu_preempt09:16:440
26766992913,13cyclictest3-21ksoftirqd/008:53:070
2676699291,26cyclictest0-21swapper/007:50:090
26766992912,5cyclictest10268-21ntp_states12:20:230
2676699291,23cyclictest20190-21awk11:20:280
2676699291,23cyclictest20190-21awk11:20:270
2676699291,17cyclictest8319-21tune2fs10:50:150
26766992911,5cyclictest4960-21/usr/sbin/munin10:40:230
2676699291,15cyclictest0-21swapper/012:35:160
2676699291,14cyclictest28630-21wget11:45:100
26766992910,6cyclictest12628-21/usr/sbin/munin09:35:200
256842290,8sleep02676699cyclictest10:10:170
245132291,5sleep10-21swapper/111:33:271
184112291,5sleep00-21swapper/012:42:120
176772290,5sleep017679-21basename09:50:120
168882291,5sleep00-21swapper/011:12:230
151442291,5sleep00-21swapper/011:08:470
130382291,5sleep00-21swapper/011:01:210
111352291,5sleep00-21swapper/010:56:180
102672291,5sleep00-21swapper/008:04:120
59862281,5sleep10-21swapper/109:17:381
304792281,5sleep10-21swapper/110:22:551
2676799284,17cyclictest1404-21iostat_ios07:40:201
2676799283,4cyclictest81rcu_preempt11:12:111
2676799281,7cyclictest3286-21runrttasks08:35:081
26767992815,7cyclictest21346-21iostat_ios12:50:191
2676799281,4cyclictest81rcu_preempt07:45:221
2676699289,5cyclictest11603-21df12:25:140
2676699288,7cyclictest16609-21ntpdc09:45:220
2676699287,10cyclictest0-21swapper/009:20:290
26766992810,16cyclictest0-21swapper/009:06:400
249882281,5sleep00-21swapper/008:40:500
232532281,5sleep00-21swapper/008:37:300
226432281,5sleep00-21swapper/011:28:300
221492281,5sleep00-21swapper/012:51:470
192212281,5sleep10-21swapper/109:53:191
175992281,5sleep00-21swapper/008:22:090
157042281,5sleep10-21swapper/108:17:111
157042281,5sleep10-21swapper/108:17:101
111332281,5sleep10-21swapper/110:56:171
65472271,5sleep10-21swapper/107:55:111
3342271,5sleep10-21swapper/107:37:071
327312271,5sleep00-21swapper/009:03:010
269372271,5sleep10-21swapper/108:46:321
2676799275,4cyclictest81rcu_preempt09:36:211
2676799274,4cyclictest81rcu_preempt10:28:431
2676799274,4cyclictest81rcu_preempt09:55:501
2676799274,4cyclictest81rcu_preempt08:50:591
2676799273,4cyclictest81rcu_preempt11:06:431
2676799273,4cyclictest81rcu_preempt08:25:011
2676799273,3cyclictest81rcu_preempt12:46:401
2676799273,18cyclictest29204-21iostat_ios11:45:191
26767992719,5cyclictest8002-21chrt10:50:111
26767992718,6cyclictest25219-21aten_r4power_cu10:10:101
26767992717,6cyclictest16740-21sendmail_mailqu09:45:261
2676699274,4cyclictest81rcu_preempt10:28:290
2676699272,13cyclictest948-21memory10:30:210
2676699272,12cyclictest14619-21fschecks_count08:15:140
2676699272,12cyclictest14619-21fschecks_count08:15:140
2676699271,13cyclictest25617-21aten_r4power_po08:45:100
247132271,5sleep10-21swapper/110:06:451
126402271,4sleep10-21swapper/112:25:591
2676799268,5cyclictest81rcu_preempt11:35:201
26767992617,6cyclictest22-21ksoftirqd/109:02:231
26767992610,12cyclictest6996-21iostat_ios09:20:191
2676699264,6cyclictest14030-21wget09:40:110
2676699262,12cyclictest397-21chrt07:37:470
2676699261,13cyclictest20457-21runrttasks12:48:410
133482261,4sleep10-21swapper/111:04:371
118452261,5sleep10-21swapper/108:06:041
2676799256,16cyclictest0-21swapper/110:35:271
2676799251,11cyclictest31574-21timerandwakeup11:50:271
26767992510,11cyclictest0-21swapper/109:25:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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