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2026-07-30 - 00:56

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 Wed Jul 29, 2026 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
793921240,3sleep30-21swapper/311:23:593
793921240,3sleep30-21swapper/311:23:593
680221040,3chrt0-21swapper/308:28:523
680221040,3chrt0-21swapper/308:28:523
144842970,3sleep00-21swapper/011:43:460
144842970,3sleep00-21swapper/011:43:460
191362910,3sleep30-21swapper/310:28:483
191362910,3sleep30-21swapper/310:28:483
143452910,3sleep00-21swapper/010:13:570
168022870,3chrt0-21swapper/311:48:523
168022870,3chrt0-21swapper/311:48:523
295792770,3sleep30-21swapper/310:57:263
295792770,3sleep30-21swapper/310:57:263
57052740,3chrt0-21swapper/011:18:540
57052740,3chrt0-21swapper/011:18:540
57052740,3chrt0-21swapper/011:18:540
14412710,3sleep30-21swapper/311:08:483
14412710,3sleep30-21swapper/311:08:483
106332680,4chrt0-21swapper/308:38:533
106332680,4chrt0-21swapper/308:38:533
285742670,3chrt0-21swapper/212:18:572
285742670,3chrt0-21swapper/212:18:572
285742670,3chrt0-21swapper/212:18:572
19312650,2sleep02128-21grep09:43:470
202322620,2sleep020235-21cat07:38:480
202322620,2sleep020235-21cat07:38:480
73922560,2sleep07395-21ls11:23:520
73922560,2sleep07395-21ls11:23:520
16062550,2chrt0-21swapper/312:33:583
16062550,2chrt0-21swapper/312:33:583
256212530,4sleep20-21swapper/209:18:522
256212530,4sleep20-21swapper/209:18:522
256212530,4sleep20-21swapper/209:18:522
183322520,3chrt0-21swapper/307:33:493
183322520,3chrt0-21swapper/307:33:493
103012460,2sleep20-21swapper/208:38:482
103012460,2sleep20-21swapper/208:38:482
37482430,3sleep20-21swapper/211:13:532
37482430,3sleep20-21swapper/211:13:532
83392420,3sleep20-21swapper/209:58:562
83392420,3sleep20-21swapper/209:58:562
83392420,3sleep20-21swapper/209:58:562
66842410,2sleep16791-21bingrep08:28:511
66842410,2sleep16791-21bingrep08:28:511
85432390,3sleep30-21swapper/308:33:513
85432390,3sleep30-21swapper/308:33:513
10877993930,7cyclictest27020-21processes10:48:540
10877993930,7cyclictest27020-21processes10:48:540
228482370,1sleep2351rcuc/207:43:572
10879993731,4cyclictest18784-21processes07:33:561
10879993731,4cyclictest18784-21processes07:33:561
10877993626,7cyclictest25719-21fschecks_count12:13:480
41152350,1sleep04194-21latency09:48:500
41152350,1sleep04194-21latency09:48:500
255532350,3sleep30-21swapper/307:53:473
255532350,3sleep30-21swapper/307:53:473
10879993526,7cyclictest26876-21netstat10:48:511
10879993526,7cyclictest26876-21netstat10:48:511
10877993528,5cyclictest10869-21cyclictest12:38:540
10877993528,5cyclictest10869-21cyclictest12:38:540
10877993528,5cyclictest10869-21cyclictest12:38:540
10877993526,6cyclictest729-21dbus-daemon08:03:340
10877993526,6cyclictest729-21dbus-daemon08:03:340
179562340,1chrt0-21swapper/007:33:420
179562340,1chrt0-21swapper/007:33:420
10879993325,6cyclictest21864-21fschecks_count07:43:471
10879993225,5cyclictest26073-21kernelversion12:13:511
10877993226,4cyclictest31558-21latency_hist11:03:350
10877993226,4cyclictest31558-21latency_hist11:03:350
10877993225,5cyclictest9659-21latency_hist08:38:360
10877993225,5cyclictest9659-21latency_hist08:38:360
10877993223,6cyclictest380-21latency_hist08:13:400
10877993223,6cyclictest380-21latency_hist08:13:400
10879993125,4cyclictest18711-21missed_timers11:53:501
10879993125,4cyclictest18711-21missed_timers11:53:501
10877993123,6cyclictest7197-21idleruntime-cro09:58:340
10877993123,6cyclictest7197-21idleruntime-cro09:58:340
10877993122,7cyclictest18374-21sort08:58:540
10877993122,7cyclictest18374-21sort08:58:540
10877993121,8cyclictest32595-21cut09:38:480
10877993121,8cyclictest32595-21cut09:38:480
10877993121,8cyclictest32595-21cut09:38:480
10877993121,8cyclictest20341-21munin-node11:48:400
10877993121,8cyclictest20341-21munin-node11:48:400
84642300,3sleep30-21swapper/309:58:573
84642300,3sleep30-21swapper/309:58:573
84642300,3sleep30-21swapper/309:58:573
10879993023,5cyclictest16579-21gltestperf11:48:501
10879993023,5cyclictest16579-21gltestperf11:48:501
10879993023,5cyclictest13792-21netstat10:13:521
10877993017,11cyclictest0-21swapper/011:53:470
10877993017,11cyclictest0-21swapper/011:53:470
28682290,3sleep20-21swapper/212:38:472
28682290,3sleep20-21swapper/212:38:472
28682290,3sleep20-21swapper/212:38:472
10879992925,3cyclictest20574-21ntp_offset07:38:531
10879992925,3cyclictest20574-21ntp_offset07:38:531
10879992924,3cyclictest0-21swapper/110:33:341
10879992924,3cyclictest0-21swapper/110:33:341
10879992920,7cyclictest15088-21fschecks_count10:18:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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