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2026-05-28 - 23:59

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 376 highest latencies:
System rack9slot4s (updated Thu May 28, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77819912741,1250cyclictest0-21swapper/107:25:071
77809912131191,17cyclictest0-21swapper/007:25:060
77819911561139,11cyclictest12319-21latency_hist07:35:011
60132563518,31sleep10-21swapper/107:20:091
73842557510,32sleep00-21swapper/007:21:230
7780999168,20cyclictest12219-21apt-get07:35:010
778099689,7cyclictest4944-21kernelversion10:05:190
7780996529,6cyclictest1766-21/usr/sbin/munin08:30:250
86782590,8sleep0778099cyclictest11:40:260
115252470,7sleep0778099cyclictest11:50:100
121532430,7sleep10-21swapper/109:00:011
778099402,13cyclictest147432sshd11:56:230
7781993915,4cyclictest81rcu_preempt11:35:271
7780993811,14cyclictest30937-21kernelversion12:40:200
313552370,8sleep0778099cyclictest11:15:220
7781993618,5cyclictest40250irq/92-i91508:35:001
778099362,21cyclictest1495-21munin-run12:50:010
778199351,17cyclictest28633-21munin-run11:10:001
7780993510,13cyclictest18455-21iostat09:15:190
67542351,30sleep16805-21iostat10:10:181
302052351,30sleep129516-21/usr/sbin/munin08:20:231
778099337,13cyclictest21743-21cpu09:25:110
259772331,27sleep125982-21iostat_ios09:35:191
232872331,28sleep023322-21/usr/sbin/munin12:20:180
129662331,28sleep112975-21iostat_ios07:35:171
7781993213,7cyclictest22-21ksoftirqd/111:26:181
778199321,18cyclictest28882-21hostname11:10:111
778199321,16cyclictest24189-21taskset12:21:411
778099324,13cyclictest26989-21cut11:05:100
778099323,16cyclictest0-21swapper/008:45:240
16422321,3sleep01655-21/usr/sbin/munin12:50:090
778199313,25cyclictest12103-21iostat_ios11:50:191
7781993121,5cyclictest32240-21awk08:25:241
778199311,13cyclictest0-21swapper/109:45:451
7781993110,17cyclictest4454-21fschecks_time11:30:161
778099317,12cyclictest0-21swapper/010:00:180
778099314,21cyclictest29452-21diskstats09:45:150
7780993112,6cyclictest23739-21iostat_ios10:55:190
7780993111,5cyclictest6894-21sort11:35:270
778099311,11cyclictest81rcu_preempt10:47:020
7780993111,11cyclictest0-21swapper/007:45:540
778199308,4cyclictest81rcu_preempt09:50:221
778199307,6cyclictest58642unixbench_multi08:40:281
7781993021,6cyclictest16131-21/usr/sbin/munin12:00:261
7781993021,6cyclictest16131-21/usr/sbin/munin12:00:261
7781993015,4cyclictest81rcu_preempt11:25:001
778199301,4cyclictest81rcu_preempt09:07:101
778099305,4cyclictest81rcu_preempt08:27:450
778099302,14cyclictest16582-21iostat_ios09:10:170
778099301,4cyclictest81rcu_preempt08:50:260
7780993012,5cyclictest20921-21ntp_states07:55:240
778099301,13cyclictest31033-21/usr/sbin/munin09:50:160
778099301,13cyclictest23623-21egrep09:30:110
7780993010,6cyclictest29640-21grep12:35:280
7780993010,5cyclictest28115-21ntp_states09:40:240
207742301,4sleep10-21swapper/110:46:341
170852300,5sleep0111rcuc/012:05:010
170852300,5sleep0111rcuc/012:05:000
778199296,4cyclictest81rcu_preempt12:16:261
778199294,9cyclictest30965-21diskstats11:15:161
778199292,4cyclictest81rcu_preempt11:46:451
7781992920,5cyclictest19080-21grep09:15:301
778199291,4cyclictest81rcu_preempt09:20:221
778199291,23cyclictest2350-21sed10:00:001
778199290,4cyclictest81rcu_preempt09:32:081
778099299,7cyclictest8773-21/usr/sbin/munin10:15:200
778099297,6cyclictest3409-21kernelversion08:35:210
778099292,14cyclictest10228-21irqstats11:45:180
778099292,14cyclictest10064-21/usr/sbin/munin10:20:120
778099292,13cyclictest25066-21/usr/sbin/munin12:25:150
778099292,13cyclictest0-21swapper/007:50:230
778099292,12cyclictest11565-21gdbus08:55:150
778099291,4cyclictest81rcu_preempt08:19:170
7780992912,5cyclictest27137-21iostat12:30:180
7780992912,5cyclictest0-21swapper/008:09:120
7780992911,6cyclictest4991-21python11:30:270
7780992911,5cyclictest975-21/usr/sbin/munin09:55:170
778099291,13cyclictest2401-21NetworkManager08:41:270
7780992910,6cyclictest20359-21iostat_ios09:20:200
65692291,5sleep10-21swapper/108:45:101
271022291,5sleep10-21swapper/108:11:231
228182291,5sleep00-21swapper/010:53:210
225512291,5sleep10-21swapper/110:50:341
197402291,5sleep10-21swapper/107:53:031
155682291,4sleep00-21swapper/009:07:270
92952281,5sleep10-21swapper/111:43:161
778199286,4cyclictest81rcu_preempt10:04:291
778199284,4cyclictest81rcu_preempt10:37:261
778199283,19cyclictest4337-21/usr/sbin/munin10:05:291
778199283,19cyclictest10594-21iostat_ios10:20:201
7781992819,5cyclictest16958-21sed07:45:211
7781992818,6cyclictest24395-21grep10:55:281
7781992818,6cyclictest12333-21wget09:00:101
778199281,3cyclictest81rcu_preempt10:26:041
778199281,10cyclictest0-21swapper/112:40:191
7781992810,5cyclictest40250irq/92-i91510:20:011
778099287,7cyclictest380-21df11:20:130
778099282,14cyclictest12419-21/usr/sbin/munin07:35:090
778099282,13cyclictest2307-21/usr/sbin/munin11:25:150
7780992811,5cyclictest25675-21df_inode09:35:120
778099281,14cyclictest11565-21gdbus10:27:420
7780992810,5cyclictest16109-21/usr/sbin/munin10:35:150
254262281,4sleep10-21swapper/108:08:261
234142285,4sleep122-21ksoftirqd/108:02:021
188372281,5sleep10-21swapper/112:09:471
16342281,5sleep10-21swapper/112:50:041
144522281,5sleep10-21swapper/107:40:021
13272281,5sleep10-21swapper/112:48:301
99082271,5sleep10-21swapper/108:52:221
778199279,5cyclictest0-21swapper/112:25:271
778199274,4cyclictest81rcu_preempt12:10:401
778199274,4cyclictest81rcu_preempt11:01:301
778199274,4cyclictest81rcu_preempt08:19:231
778199274,14cyclictest0-21swapper/109:10:281
778199271,22cyclictest14065-21memory11:55:191
778199271,16cyclictest0-21swapper/112:35:301
778099279,6cyclictest14036-21/usr/sbin/munin10:30:130
778099279,6cyclictest13237-21cut09:00:270
778099273,8cyclictest17749-21iostat_ios12:05:190
778099272,13cyclictest18535-21python10:40:260
7780992717,6cyclictest15193-21cat07:40:220
778099271,4cyclictest81rcu_preempt12:10:030
7780992711,4cyclictest28902-21aten_r4power_vo11:10:100
279182271,5sleep10-21swapper/112:31:281
217742271,5sleep10-21swapper/107:59:411
150322271,5sleep10-21swapper/110:30:341
778199261,4cyclictest81rcu_preempt10:41:451
7781992614,7cyclictest2225-21dbus-daemon09:25:231
778199261,21cyclictest3399-21iostat_ios08:35:211
778199261,21cyclictest27772-21hddtemp_smartct09:40:161
778099269,5cyclictest26234-21hddtemp_smartct08:10:170
778099262,21cyclictest25064-21aten_r4power_cu11:00:100
778099262,18cyclictest23007-21python08:00:280
778099261,4cyclictest81rcu_preempt10:10:480
778099261,13cyclictest11565-21gdbus12:19:430
778099260,4cyclictest81rcu_preempt08:24:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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