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2025-11-29 - 16:23

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 Sat Nov 29, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
380421040,2sleep10-21swapper/109:34:091
380421040,2sleep10-21swapper/109:34:091
274812940,3sleep10-21swapper/107:48:531
274812940,3sleep10-21swapper/107:48:531
285572880,8sleep1281ktimers/110:40:021
285572880,8sleep1281ktimers/110:40:021
26842870,2sleep10-21swapper/112:24:011
26842870,2sleep10-21swapper/112:24:011
90932860,2sleep10-21swapper/108:24:031
301222790,3chrt0-21swapper/110:44:081
239362790,3sleep20-21swapper/210:29:012
239362790,3sleep20-21swapper/210:29:012
311572780,2sleep20-21swapper/210:48:592
311572780,2sleep20-21swapper/210:48:592
56772670,3sleep30-21swapper/309:39:103
56772670,3sleep30-21swapper/309:39:103
168622650,4chrt16132-21/usr/sbin/munin08:44:051
168622650,4chrt16132-21/usr/sbin/munin08:44:051
238252630,3sleep10-21swapper/109:03:581
238252630,3sleep10-21swapper/109:03:581
224092610,3chrt0-21swapper/307:34:003
114242600,2sleep30-21swapper/309:54:093
114242600,2sleep30-21swapper/309:54:093
108952600,3chrt0-21swapper/311:19:073
222012570,3chrt0-21swapper/211:49:092
107582560,3chrt0-21swapper/211:19:062
230222530,3sleep20-21swapper/207:34:072
167982530,3sleep20-21swapper/210:09:082
167982530,3sleep20-21swapper/210:09:082
268572490,3sleep20-21swapper/207:44:082
268572490,3sleep20-21swapper/207:44:082
204382490,3sleep129-21ksoftirqd/111:44:091
204382490,3sleep129-21ksoftirqd/111:44:091
204382490,3sleep129-21ksoftirqd/111:44:091
66572480,4chrt0-21swapper/308:18:583
66572480,4chrt0-21swapper/308:18:583
256062460,1sleep025752-21if_eth010:33:590
256062460,1sleep025752-21if_eth010:33:590
87622450,2sleep20-21swapper/211:14:042
87622450,2sleep20-21swapper/211:14:042
14053994541,2cyclictest0-21swapper/108:03:571
14053994541,2cyclictest0-21swapper/108:03:571
14053994541,2cyclictest0-21swapper/108:03:571
136992450,3chrt0-21swapper/310:03:023
136992450,3chrt0-21swapper/310:03:023
1405399446,5cyclictest181rcu_preempt07:43:551
1405399446,5cyclictest181rcu_preempt07:43:551
1405399444,9cyclictest181rcu_preempt08:38:551
1405399444,9cyclictest181rcu_preempt08:38:551
1405399434,6cyclictest181rcu_preempt10:58:551
1405399423,5cyclictest181rcu_preempt09:08:571
1405399421,10cyclictest181rcu_preempt07:33:551
1405299425,28cyclictest55150irq/47-eth008:28:560
1405399417,12cyclictest91-1pr/ttyS011:13:551
1405399417,12cyclictest91-1pr/ttyS011:13:551
146122400,2sleep20-21swapper/210:04:012
146122400,2sleep20-21swapper/210:04:012
14052994025,11cyclictest171ktimers/010:03:550
14052994025,11cyclictest171ktimers/010:03:550
1405299401,34cyclictest663-21runrttasks09:58:570
1405299401,34cyclictest663-21runrttasks09:58:570
156672390,1sleep015750-21awk11:33:560
156672390,1sleep015750-21awk11:33:560
282562380,3sleep30-21swapper/312:04:093
14052993817,12cyclictest55150irq/47-eth010:18:560
14052993817,12cyclictest55150irq/47-eth010:18:560
210632370,3sleep30-21swapper/310:20:423
210632370,3sleep30-21swapper/310:20:423
1405599372,28cyclictest0-21swapper/311:43:563
1405599372,28cyclictest0-21swapper/311:43:563
1405599372,28cyclictest0-21swapper/311:43:563
1405599371,27cyclictest0-21swapper/307:38:583
1405599371,27cyclictest0-21swapper/307:38:583
14053993731,4cyclictest0-21swapper/107:58:541
14053993731,4cyclictest0-21swapper/107:58:541
1405299373,25cyclictest55150irq/47-eth011:43:580
1405299373,25cyclictest55150irq/47-eth011:43:580
1405299373,25cyclictest55150irq/47-eth011:43:580
14053993628,6cyclictest0-21swapper/110:23:561
14053993628,6cyclictest0-21swapper/110:23:561
1405599351,3cyclictest0-21swapper/311:31:003
1405599351,3cyclictest0-21swapper/311:31:003
1405399354,24cyclictest394-21snmpd11:08:551
1405399354,24cyclictest394-21snmpd11:08:551
14053993513,18cyclictest281ktimers/108:58:541
14053993513,18cyclictest281ktimers/108:58:541
1405599342,3cyclictest0-21swapper/312:38:563
1405599342,3cyclictest0-21swapper/312:38:563
1405599342,24cyclictest0-21swapper/310:43:573
1405599341,27cyclictest0-21swapper/308:23:543
1405399343,26cyclictest394-21snmpd12:03:571
14053993427,5cyclictest14158-21fschecks_count10:03:581
14053993427,5cyclictest14158-21fschecks_count10:03:581
1405299346,20cyclictest55150irq/47-eth009:18:540
1405299346,20cyclictest55150irq/47-eth009:18:540
1405299346,20cyclictest55150irq/47-eth009:18:540
1405299343,22cyclictest10327-21apt-get08:28:510
14052993427,5cyclictest16461-21latency10:09:020
14052993427,5cyclictest16461-21latency10:09:020
1405599332,25cyclictest0-21swapper/308:43:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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