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2026-04-23 - 19:24

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 all highest latencies:
System rack9slot4s (updated Thu Apr 23, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132269912631219,33cyclictest0-21swapper/007:25:120
132279911331102,27cyclictest9146-21smartctl09:30:181
131292598550,33sleep00-21swapper/007:24:340
129132564519,30sleep10-21swapper/107:22:191
1322699258232,8cyclictest9141-21ssh09:30:180
13227999488,3cyclictest0-21swapper/107:25:121
316282830,9sleep11322799cyclictest12:07:171
129992790,5sleep013001-21unixbench_singl10:40:290
250442760,4sleep1211ktimersoftd/111:26:481
250442760,4sleep1211ktimersoftd/111:26:471
1322699691,16cyclictest22531-21proc_pri09:10:240
211632600,7sleep11322799cyclictest09:09:001
13226996013,6cyclictest2695-21snmpd12:13:420
256442580,8sleep01322699cyclictest10:54:490
163722570,8sleep11322799cyclictest08:55:181
1322699576,5cyclictest40250irq/92-i91511:54:430
1322699572,21cyclictest29153-21ssh09:17:220
13226995713,6cyclictest9373-21python11:10:270
1322699552,13cyclictest31321-21ntp_states12:40:240
13226995514,15cyclictest27768-21tune2fs08:00:160
171582541,33sleep117171-21sh11:52:181
148012540,7sleep10-21swapper/110:43:041
1322699541,15cyclictest28289-21memory11:30:200
277672530,5sleep1211ktimersoftd/108:00:151
1322699531,15cyclictest14490-21iostat08:50:180
281592511,37sleep128176-21iostat_ios11:30:181
1322699512,14cyclictest9836-21ssh12:52:470
1322699503,19cyclictest14591-21python09:35:270
1322699501,13cyclictest24669-21hddtemp_smartct12:00:150
1322699492,19cyclictest16933-21python07:30:290
1322699491,13cyclictest3286-21runrttasks11:41:490
168692486,14sleep116881-21rm11:18:581
1322699482,14cyclictest10401-21/usr/sbin/munin10:05:140
1322699482,14cyclictest10401-21/usr/sbin/munin10:05:130
205802440,5sleep0111rcuc/009:05:270
313112430,6sleep131308-21fschecks_count11:00:141
13226994011,16cyclictest9854-21grep11:45:130
15312391,34sleep11537-21ssh12:43:431
261962381,33sleep121270-21diskmemload09:47:541
233122381,3sleep123322-21ssh10:18:351
1322799386,5cyclictest22-21ksoftirqd/110:02:221
160452371,32sleep116059-21ssh09:37:121
1322799377,5cyclictest81rcu_preempt12:48:371
211772361,30sleep12695-21snmpd07:42:201
1322699362,4cyclictest81rcu_preempt10:45:310
13226993610,13cyclictest21270-21diskmemload09:28:080
8612351,30sleep1950-21iostat09:55:181
248142351,30sleep124907-21memory12:00:211
186792351,30sleep117875-21/usr/sbin/munin11:20:231
1322799352,20cyclictest0-21swapper/112:32:121
1322699358,6cyclictest2695-21snmpd11:20:290
1322699351,24cyclictest0-21swapper/008:14:180
300652340,9sleep11322799cyclictest08:05:231
215492341,5sleep121589-21fschecks_count10:50:151
1322799344,4cyclictest81rcu_preempt12:28:021
1322799342,4cyclictest81rcu_preempt10:12:121
13227993414,9cyclictest22-21ksoftirqd/112:51:531
13227993414,15cyclictest3759-21tune2fs11:05:161
1322799341,14cyclictest0-21swapper/109:20:331
1322699344,9cyclictest11815-21memory12:20:210
13226993413,9cyclictest4362-21ntp_states11:05:250
1322699341,21cyclictest20765-21ssh12:30:120
120252341,29sleep112036-21ssh11:13:571
194072331,3sleep121270-21diskmemload11:55:121
1322799332,17cyclictest0-21swapper/110:48:491
1322699336,13cyclictest1224-21cut08:15:220
1322699335,4cyclictest81rcu_preempt11:25:180
1322699335,4cyclictest81rcu_preempt11:25:170
13226993323,6cyclictest2430-21ssh09:56:260
13226993315,6cyclictest18125-21diskstats07:35:130
1322699331,20cyclictest30134-21diskmemload12:05:280
1322799326,15cyclictest0-21swapper/110:57:011
1322799325,4cyclictest81rcu_preempt08:20:441
1322799324,24cyclictest0-21swapper/112:35:341
1322799321,26cyclictest29530-21aten_r4power_vo10:25:111
1322799321,18cyclictest0-21swapper/109:42:051
13226993217,9cyclictest31592-21diskstats09:20:150
13226993216,5cyclictest0-21swapper/009:40:300
13226993213,4cyclictest31858-21ntp_states11:00:250
13226993211,6cyclictest4294-21ssh12:45:470
1322699321,13cyclictest650-21memory11:35:220
61212311,5sleep10-21swapper/110:34:321
1322799315,4cyclictest81rcu_preempt07:34:201
1322799315,22cyclictest0-21swapper/112:13:261
1322799312,11cyclictest0-21swapper/112:20:211
13227993112,6cyclictest22-21ksoftirqd/109:12:211
1322799311,17cyclictest9628-21sh12:18:221
1322699319,11cyclictest3846-21sh10:31:120
1322699311,4cyclictest81rcu_preempt12:25:200
1322699311,4cyclictest81rcu_preempt11:15:230
1322699311,4cyclictest81rcu_preempt10:17:450
13226993113,3cyclictest0-21swapper/009:54:060
13226993112,6cyclictest9258-21python08:35:270
13226993112,6cyclictest23773-21iostat09:45:200
13226993112,5cyclictest17702-21/usr/sbin/munin09:00:110
318882301,5sleep10-21swapper/109:54:101
269562303,23sleep027006-21ntp_states10:55:240
1322799309,7cyclictest81rcu_preempt11:41:381
1322799303,14cyclictest0-21swapper/111:45:451
13227993016,8cyclictest25379-21memory10:20:221
1322799301,4cyclictest81rcu_preempt10:38:201
13227993014,12cyclictest3286-21runrttasks11:38:231
13227993013,7cyclictest2225-21dbus-daemon09:28:031
1322699309,8cyclictest19686-21fschecks_count11:55:150
1322699308,4cyclictest81rcu_preempt12:15:220
13226993012,6cyclictest6720-21/usr/sbin/munin08:30:150
13226993012,5cyclictest4781-21df_inode08:25:140
13226993012,5cyclictest31044-21munin-run08:10:000
1322699300,4cyclictest81rcu_preempt08:20:520
1322799294,8cyclictest10736-21iostat_ios08:40:201
1322799294,4cyclictest81rcu_preempt08:19:301
1322799293,19cyclictest26137-21iostat_ios07:55:201
1322799292,24cyclictest0-21swapper/109:17:151
1322699296,12cyclictest26411-21sh12:35:230
1322699294,18cyclictest26553-21python07:55:270
1322699293,4cyclictest81rcu_preempt10:20:550
13226992917,8cyclictest21270-21diskmemload10:00:180
1322699291,4cyclictest81rcu_preempt07:42:000
1322699291,24cyclictest22184-21/usr/sbin/munin07:45:170
13226992911,5cyclictest3286-21runrttasks10:10:460
13226992910,6cyclictest30975-21ssh10:25:390
95892281,5sleep10-21swapper/108:36:141
191212281,5sleep10-21swapper/107:35:401
136922281,5sleep00-21swapper/008:49:360
1322799286,17cyclictest0-21swapper/107:50:241
1322799285,4cyclictest81rcu_preempt08:54:311
1322799284,4cyclictest81rcu_preempt08:31:571
1322799284,17cyclictest11535-21users10:05:301
1322799284,17cyclictest11535-21users10:05:291
13226992810,5cyclictest8316-21ssh10:35:410
327522271,5sleep10-21swapper/108:13:331
1322799275,4cyclictest81rcu_preempt07:46:461
1322799271,4cyclictest81rcu_preempt09:02:371
1322799271,4cyclictest81rcu_preempt08:28:471
1322699271,13cyclictest24169-21wget07:50:170
1322699261,16cyclictest0-21swapper/008:40:160
172162251,5sleep00-21swapper/008:57:110
1322799251,11cyclictest12019-21/usr/sbin/munin08:45:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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