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2026-07-17 - 15:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 100 highest latencies:
System rack4slot1s.osadl.org (updated Fri Jul 17, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1378721230,2sleep10-21swapper/111:53:261
1378721230,2sleep10-21swapper/111:53:261
2160721190,2sleep16526-21cyclictest07:53:391
2160721190,2sleep16526-21cyclictest07:53:391
26892980,3chrt2694-21cpu11:23:351
26892980,3chrt2694-21cpu11:23:351
26892980,3chrt2694-21cpu11:23:351
247612800,2sleep124762-21cat08:03:241
247612800,2sleep124762-21cat08:03:241
37792660,3chrt0-21swapper/208:33:362
37792660,3chrt0-21swapper/208:33:362
221942570,2chrt0-21swapper/112:13:441
221942570,2chrt0-21swapper/112:13:441
221942570,2chrt0-21swapper/112:13:441
221942570,2chrt0-21swapper/112:13:441
303902550,2sleep20-21swapper/211:08:452
303902550,2sleep20-21swapper/211:08:452
163572550,2chrt16355-21ntp_states07:38:431
163572550,2chrt16355-21ntp_states07:38:431
163572550,2chrt16355-21ntp_states07:38:431
80932530,3sleep20-21swapper/210:08:472
80932530,3sleep20-21swapper/210:08:472
285242510,2sleep10-21swapper/111:03:451
285242510,2sleep10-21swapper/111:03:451
285242510,2sleep10-21swapper/111:03:451
57502500,2chrt0-21swapper/111:28:461
57502500,2chrt0-21swapper/111:28:461
57502500,2chrt0-21swapper/111:28:461
108652490,5sleep110863-21gzip11:43:411
108652490,5sleep110863-21gzip11:43:411
108652490,5sleep110863-21gzip11:43:411
252012460,2sleep10-21swapper/109:28:421
252012460,2sleep10-21swapper/109:28:421
252012460,2sleep10-21swapper/109:28:421
173232460,3sleep20-21swapper/207:43:282
173232460,3sleep20-21swapper/207:43:282
173232460,3sleep20-21swapper/207:43:282
270992450,3sleep1271rcuc/112:28:361
270992450,3sleep1271rcuc/112:28:361
270992450,3sleep1271rcuc/112:28:361
53702420,1sleep15371-21fschecks_time10:03:351
53702420,1sleep15371-21fschecks_time10:03:351
28792420,2sleep1271rcuc/109:56:521
28792420,2sleep1271rcuc/109:56:521
293272400,2sleep029254-21latency_hist11:08:280
293272400,2sleep029254-21latency_hist11:08:280
293272400,2sleep029254-21latency_hist11:08:280
193802400,2sleep119378-21awk12:08:261
193802400,2sleep119378-21awk12:08:261
193802400,2sleep119378-21awk12:08:261
266002380,3chrt0-21swapper/208:08:232
266002380,3chrt0-21swapper/208:08:232
6552993627,6cyclictest16682-21gltestperf10:33:371
157472360,3sleep20-21swapper/210:28:492
157472360,3sleep20-21swapper/210:28:492
6544993526,7cyclictest12524-21needreboot07:28:410
6544993526,7cyclictest12524-21needreboot07:28:410
6544993526,7cyclictest12524-21needreboot07:28:410
6544993428,4cyclictest18859-21missed_timers10:38:390
6544993428,4cyclictest18859-21missed_timers10:38:390
85332330,3chrt0-21swapper/111:38:351
85332330,3chrt0-21swapper/111:38:351
654499332,5cyclictest181rcu_preempt11:34:440
654499332,5cyclictest181rcu_preempt11:34:440
6544993325,6cyclictest9023-21apache209:22:530
6544993325,6cyclictest9023-21apache209:22:530
6544993225,5cyclictest9575-21fschecks_count08:48:350
6544993225,5cyclictest9575-21fschecks_count08:48:350
178912320,3chrt0-21swapper/212:03:362
178912320,3chrt0-21swapper/212:03:362
178912320,3chrt0-21swapper/212:03:362
178912320,3chrt0-21swapper/212:03:362
6552993125,4cyclictest32097-21fschecks_count09:48:371
6552993125,4cyclictest32097-21fschecks_count09:48:371
6552993124,5cyclictest9615-21ntp_kernel_pll_10:13:421
6552993124,5cyclictest9615-21ntp_kernel_pll_10:13:421
114842310,2sleep10-21swapper/110:18:441
114842310,2sleep10-21swapper/110:18:441
6552993025,4cyclictest6526-21cyclictest07:49:201
6552993023,5cyclictest12861-21threads07:28:461
6552993023,5cyclictest12861-21threads07:28:461
6552993023,5cyclictest12861-21threads07:28:461
6552993022,6cyclictest18606-21sort07:43:471
6552993022,6cyclictest18606-21sort07:43:471
6552993022,6cyclictest18606-21sort07:43:471
6544993024,4cyclictest3325-21cpuspeed09:58:360
6544993024,4cyclictest3325-21cpuspeed09:58:360
6544993024,4cyclictest3325-21cpuspeed09:58:360
6544993023,5cyclictest26505-21fschecks_count09:33:360
6544993022,6cyclictest12120-21sshd10:19:540
6544993022,6cyclictest12120-21sshd10:19:540
156752300,2sleep115821-21fschecks_time07:38:361
156752300,2sleep115821-21fschecks_time07:38:361
6552992923,4cyclictest6526-21cyclictest07:23:351
6552992923,4cyclictest6526-21cyclictest07:23:351
6552992923,4cyclictest6526-21cyclictest07:23:351
6552992923,4cyclictest0-21swapper/111:13:471
6552992923,4cyclictest0-21swapper/111:13:471
6552992923,4cyclictest0-21swapper/111:13:471
6552992920,7cyclictest28424-21cut09:38:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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