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2026-07-31 - 01:44

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 Thu Jul 30, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2269921190,1sleep2351rcuc/212:38:522
2269921190,1sleep2351rcuc/212:38:522
2269921190,1sleep2351rcuc/212:38:522
2997621020,3sleep30-21swapper/310:03:563
2997621020,3sleep30-21swapper/310:03:563
101982820,2sleep010196-21ntp_states10:38:540
101982820,2sleep010196-21ntp_states10:38:540
181092750,3chrt0-21swapper/308:08:463
256812680,1sleep00-21swapper/011:18:580
256812680,1sleep00-21swapper/011:18:580
256812680,1sleep00-21swapper/011:18:580
268622670,3sleep00-21swapper/009:58:460
268622670,3sleep00-21swapper/009:58:460
268622670,3sleep00-21swapper/009:58:460
243052670,2sleep124306-21sed11:18:391
243052670,2sleep124306-21sed11:18:391
99052610,3sleep30-21swapper/307:43:583
99052610,3sleep30-21swapper/307:43:583
292052610,2chrt0-21swapper/308:38:453
292052610,2chrt0-21swapper/308:38:453
326162580,3chrt32618-21awk11:38:520
326162580,3chrt32618-21awk11:38:520
326162580,3chrt32618-21awk11:38:520
155572580,2sleep2351rcuc/210:53:522
155572580,2sleep2351rcuc/210:53:522
228142570,2chrt22805-21fschecks_time11:13:480
228142570,2chrt22805-21fschecks_time11:13:480
313332550,3chrt0-21swapper/210:08:532
272412550,3sleep30-21swapper/309:58:493
272412550,3sleep30-21swapper/309:58:493
272412550,3sleep30-21swapper/309:58:493
138992460,2sleep10-21swapper/112:13:591
134352440,3chrt0-21swapper/307:53:553
218012420,3sleep30-21swapper/312:38:373
218012420,3sleep30-21swapper/312:38:373
30062400,3chrt0-21swapper/010:18:560
30062400,3chrt0-21swapper/010:18:560
30214993833,4cyclictest735-21systemd-logind09:30:500
30214993833,4cyclictest735-21systemd-logind09:30:500
216382380,3sleep20-21swapper/209:43:492
216382380,3sleep20-21swapper/209:43:492
131692380,2sleep013171-21sed10:48:430
131692380,2sleep013171-21sed10:48:430
30221993630,4cyclictest545-21in:imuxsock09:30:501
30221993630,4cyclictest545-21in:imuxsock09:30:501
243622360,4sleep30-21swapper/308:23:543
55372350,3chrt0-21swapper/207:33:522
55372350,3chrt0-21swapper/207:33:522
30214993531,3cyclictest90-1pr/ttyS009:21:260
30214993531,3cyclictest90-1pr/ttyS009:21:260
30214993531,3cyclictest90-1pr/ttyS009:21:260
30214993531,3cyclictest90-1pr/ttyS009:21:260
30214993531,3cyclictest90-1pr/ttyS009:03:030
30214993531,3cyclictest90-1pr/ttyS009:03:030
30214993528,5cyclictest3305-21gltestperf07:28:480
30214993528,5cyclictest3305-21gltestperf07:28:480
30214993526,7cyclictest19505-21needreboot11:03:510
30214993526,7cyclictest19505-21needreboot11:03:510
30214993523,10cyclictest28350-21threads08:33:580
30214993511,15cyclictest16-21ksoftirqd/010:10:190
305012340,5sleep030505-21if_wlan011:33:500
305012340,5sleep030505-21if_wlan011:33:500
30221993327,4cyclictest735-21systemd-logind09:20:441
30221993327,4cyclictest735-21systemd-logind09:20:441
30221993327,4cyclictest735-21systemd-logind09:20:441
30221993327,4cyclictest735-21systemd-logind09:20:441
30214993329,3cyclictest90-1pr/ttyS012:17:070
30214993228,3cyclictest13476-21gltestperf10:48:480
30214993225,5cyclictest24931-21sshd08:24:320
30214993224,6cyclictest10674-21fschecks_count07:48:470
30642310,4sleep0201rcuc/008:53:540
30642310,4sleep0201rcuc/008:53:540
30221993124,5cyclictest11252-21kernelversion12:08:501
30221993124,5cyclictest11252-21kernelversion12:08:501
30214993124,6cyclictest14471-21tr09:23:540
30214993124,6cyclictest14471-21tr09:23:540
30214993124,5cyclictest2307-21unixbench_multi07:23:570
30214993122,7cyclictest21770-21sort12:38:350
30214993122,7cyclictest21770-21sort12:38:350
221262310,2sleep10-21swapper/109:43:561
221262310,2sleep10-21swapper/109:43:561
30221993025,4cyclictest30212-21cyclictest07:48:551
30221993025,4cyclictest1346-21avahi-daemon12:03:481
30221993025,4cyclictest1346-21avahi-daemon12:03:481
30221993023,5cyclictest20229-21sshd11:05:321
30221993023,5cyclictest20229-21sshd11:05:321
30214993024,4cyclictest19589-21fschecks_time09:38:480
30214993024,4cyclictest19589-21fschecks_time09:38:480
30214993024,4cyclictest19589-21fschecks_time09:38:480
30214993018,4cyclictest181rcu_preempt12:28:440
30214993018,4cyclictest181rcu_preempt12:28:440
30221992922,5cyclictest10026-21cpuspeed09:13:471
30221992922,5cyclictest10026-21cpuspeed09:13:471
30221992922,5cyclictest10026-21cpuspeed09:13:471
30221992921,6cyclictest28064-21unixbench_multi09:58:591
30221992921,6cyclictest28064-21unixbench_multi09:58:591
30221992921,6cyclictest28064-21unixbench_multi09:58:591
30214992922,5cyclictest9797-21unixbench-2d07:43:570
30214992922,5cyclictest9797-21unixbench-2d07:43:570
30214992922,4cyclictest0-21swapper/011:23:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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