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2026-06-20 - 15:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rackeslot6s.osadl.org (updated Sat Jun 20, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146441399935,45cyclictest1501599-21/usr/sbin/munin22:45:191
146441699867,22cyclictest1507386-21apt-get23:20:022
146441299761,64cyclictest0-21swapper/019:45:100
146441699757,21cyclictest1493821-21/usr/sbin/munin22:00:172
1464412997232,37cyclictest167350irq/118-8000000.ethernet-tx021:00:210
1464412997232,35cyclictest0-21swapper/022:05:010
1464412997231,9cyclictest0-21swapper/023:05:280
1464412997137,4cyclictest167350irq/118-8000000.ethernet-tx020:35:280
1464412996936,4cyclictest167350irq/118-8000000.ethernet-tx023:25:240
1464413996357,3cyclictest1510943-21apt-get23:40:011
1464413996318,35cyclictest0-21swapper/120:10:011
1464416996251,6cyclictest30-21rcuc/222:30:022
1464416995950,4cyclictest311ktimers/221:30:002
146441699581,23cyclictest0-21swapper/219:50:012
1464413995814,37cyclictest1476399-21ptp4l20:15:281
1464412995547,5cyclictest167350irq/118-8000000.ethernet-tx000:00:000
1464412995446,4cyclictest0-21swapper/019:40:200
1464412995446,4cyclictest0-21swapper/019:40:190
146441299543,6cyclictest12-21ksoftirqd/023:00:150
1464416995343,5cyclictest1472317-21munin-plugin-st19:55:012
1464413995041,5cyclictest1499702-21munin-plugin-st22:35:001
1464413995030,11cyclictest1493824-21apt-get22:00:151
1464413995024,13cyclictest0-21swapper/122:05:151
1464412995031,15cyclictest131ktimers/019:55:130
146441299499,16cyclictest0-21swapper/000:25:020
1464412994939,7cyclictest1487591-21grep21:20:270
1464412994937,9cyclictest0-21swapper/021:50:000
1464416994830,12cyclictest0-21swapper/221:20:012
146441399484,30cyclictest0-21swapper/123:35:011
1464413994831,11cyclictest1505815-21apt-get23:10:131
1464413994831,10cyclictest0-21swapper/100:34:591
1464413994830,12cyclictest1487911-21apt-get21:25:141
1464413994829,14cyclictest0-21swapper/121:00:111
1464413994828,15cyclictest0-21swapper/120:35:121
146441299485,8cyclictest1510180-21rm23:35:010
146441299482,4cyclictest1474749-21/usr/sbin/munin20:05:320
146441299481,17cyclictest0-21swapper/019:35:020
1464413994730,10cyclictest1464634-21apt-get19:10:151
1464413994720,15cyclictest231ktimers/100:10:161
1464412994740,4cyclictest20850irq/208-8000000.ethernet21:55:000
1464412994739,5cyclictest0-21swapper/000:15:200
1464416994632,10cyclictest1473168-21sendmail20:00:012
146441699463,20cyclictest30-21rcuc/221:05:022
1464413994629,11cyclictest0-21swapper/122:40:111
1464413994629,11cyclictest0-21swapper/122:40:111
1464413994628,13cyclictest0-21swapper/120:45:141
1464413994625,11cyclictest0-21swapper/120:55:211
1464413994622,15cyclictest1482317-21/usr/sbin/munin20:50:251
146441399461,26cyclictest0-21swapper/123:10:011
1464412994641,2cyclictest0-21swapper/023:50:150
1464412994639,4cyclictest1474106-21munin-plugin-st20:05:000
1464412994638,4cyclictest167350irq/118-8000000.ethernet-tx021:35:250
1464416994537,4cyclictest1521175-21latency_hist00:40:002
1464416994537,4cyclictest1521175-21latency_hist00:40:002
1464413994530,11cyclictest1468301-21apt-get19:30:151
1464413994529,9cyclictest1491290-21apt-get21:45:151
1464413994528,11cyclictest0-21swapper/121:50:151
1464413994524,14cyclictest1521143-21/usr/sbin/munin00:35:291
1464413994524,14cyclictest1521143-21/usr/sbin/munin00:35:291
1464413994523,15cyclictest0-21swapper/120:20:291
1464413994523,14cyclictest1489802-21/usr/sbin/munin21:35:201
1464413994523,13cyclictest1517497-21/usr/sbin/munin00:15:261
1464413994523,13cyclictest1478023-21/usr/sbin/munin20:25:261
1464413994523,13cyclictest1478023-21/usr/sbin/munin20:25:251
1464413994523,11cyclictest1514725-21grep00:00:191
1464413994521,11cyclictest0-21swapper/119:20:141
1464413994516,14cyclictest0-21swapper/123:55:121
1464412994536,4cyclictest1660-21snmpd20:40:180
146441299451,41cyclictest1486701-21sed21:15:290
1464416994431,8cyclictest1492657-21grep21:50:292
1464416994412,11cyclictest1508532-21/usr/sbin/munin23:25:202
1464413994432,8cyclictest1497293-21munin-node22:20:101
1464413994429,7cyclictest0-21swapper/120:00:301
1464413994427,13cyclictest0-21swapper/123:40:141
1464413994426,9cyclictest1475737-21grep20:10:281
1464413994424,14cyclictest0-21swapper/119:40:121
1464413994424,14cyclictest0-21swapper/119:40:121
1464412994436,5cyclictest1466406-21munin-plugin-st19:20:000
146441299442,40cyclictest0-21swapper/020:10:280
146441299442,36cyclictest1468062-21grep19:25:300
146441299441,4cyclictest0-21swapper/022:00:000
1464416994332,7cyclictest1512672-21grep23:45:292
146441699431,4cyclictest0-21swapper/222:00:012
1464413994333,5cyclictest1490449-21apt-get21:40:141
1464413994331,6cyclictest1508249-21grep23:20:291
1464412994334,5cyclictest0-21swapper/000:05:120
1464412994334,5cyclictest0-21swapper/000:05:120
146441299432,39cyclictest0-21swapper/023:40:050
146441299431,10cyclictest1503870-21grep22:55:290
1464413994233,5cyclictest1486490-21/usr/sbin/munin21:15:281
1464413994232,5cyclictest1488820-21/usr/sbin/munin21:30:161
1464413994231,7cyclictest1515949-21/usr/sbin/munin00:05:291
1464413994231,7cyclictest1515949-21/usr/sbin/munin00:05:291
1464413994229,7cyclictest1502436-21/usr/sbin/munin22:50:281
1464413994228,10cyclictest1504133-21/usr/sbin/munin23:00:101
1464413994224,11cyclictest1484565-21/usr/sbin/munin21:05:201
1464413994223,13cyclictest0-21swapper/122:55:141
1464413994218,15cyclictest1498261-21/usr/sbin/munin22:25:191
1464412994230,8cyclictest1476640-21sendmail20:20:010
1464412994229,9cyclictest0-21swapper/019:55:000
1464412994227,10cyclictest0-21swapper/023:20:250
146441299421,4cyclictest0-21swapper/022:15:130
1464416994134,5cyclictest311ktimers/220:20:012
1464416994132,4cyclictest0-21swapper/222:40:282
1464416994132,4cyclictest0-21swapper/222:40:272
1464413994133,4cyclictest1478525-21apt-get20:30:151
1464413994133,4cyclictest1471677-21apt-get19:50:131
1464413994132,5cyclictest1499902-21apt-get22:35:111
1464413994132,4cyclictest1465758-21apt-get19:15:141
1464413994128,8cyclictest1496969-21grep22:15:271
1464413994128,8cyclictest1496216-21sshd22:12:361
1464413994126,9cyclictest1506801-21df23:15:151
1464413994125,9cyclictest1485524-21/usr/sbin/munin21:10:221
1464413994125,9cyclictest1469212-21/usr/sbin/munin19:35:171
1464413994122,11cyclictest0-21swapper/119:55:261
1464412994134,4cyclictest0-21swapper/019:10:260
1464412994132,5cyclictest0-21swapper/019:35:290
146441299412,5cyclictest1481360-21meminfo20:45:260
146441299411,4cyclictest1521100-21unixbench_singl00:35:290
146441299411,4cyclictest1521100-21unixbench_singl00:35:280
146441299411,4cyclictest1498769-21apt-get22:30:040
146441699407,18cyclictest30-21rcuc/221:50:022
1464416994030,6cyclictest0-21swapper/223:55:172
1464416994028,8cyclictest1485871-21grep21:10:282
1464413994030,6cyclictest1492967-21apt-get21:55:131
1464413994026,8cyclictest1508834-21/usr/sbin/munin23:25:251
1464413994024,9cyclictest1518010-21apt-get00:20:161
1464413994023,11cyclictest1512463-21/usr/sbin/munin23:45:261
1464412994035,2cyclictest0-21swapper/000:10:290
1464412994032,4cyclictest167350irq/118-8000000.ethernet-tx022:20:200
1464412994032,4cyclictest1507513-21apt-key23:20:000
1464412994028,7cyclictest0-21swapper/023:40:000
1464412994026,9cyclictest0-21swapper/000:00:190
146441299402,4cyclictest0-21swapper/021:35:020
1464412994024,11cyclictest0-21swapper/021:10:000
146441299401,6cyclictest1498890-21latency_hist22:30:010
146441299401,6cyclictest0-21swapper/022:15:010
1464416993925,9cyclictest0-21swapper/219:15:282
1464416993921,13cyclictest311ktimers/221:35:112
146441699391,31cyclictest0-21swapper/222:55:192
1464413993933,3cyclictest1487370-21/usr/sbin/munin21:20:241
1464413993930,5cyclictest1467628-21ssh19:25:211
1464413993924,8cyclictest1471360-21grep19:45:271
1464413993922,12cyclictest0-21swapper/123:50:121
1464412993928,6cyclictest0-21swapper/020:55:210
1464412993924,13cyclictest0-21swapper/021:40:210
1464412993922,15cyclictest0-21swapper/022:40:130
1464412993922,15cyclictest0-21swapper/022:40:120
146441299391,36cyclictest0-21swapper/022:05:040
1464416993828,5cyclictest0-21swapper/223:50:282
1464416993828,5cyclictest0-21swapper/219:40:292
1464416993828,5cyclictest0-21swapper/219:40:282
1464416993824,10cyclictest0-21swapper/223:40:262
146441699382,3cyclictest0-21swapper/220:10:282
1464412993833,2cyclictest0-21swapper/021:30:010
146441299383,30cyclictest1506335-21grep23:10:260
1464412993826,8cyclictest0-21swapper/020:20:270
1464412993823,13cyclictest0-21swapper/000:30:210
146441299381,35cyclictest0-21swapper/019:20:130
1464416993726,7cyclictest1465156-21grep19:10:272
1464416993719,10cyclictest0-21swapper/220:20:302
146441699371,29cyclictest1467704-21if_eth119:25:222
1464413993730,3cyclictest1518854-21apt-get00:25:161
1464413993723,9cyclictest1480304-21/usr/sbin/munin20:40:191
1464413993715,14cyclictest1464595-21grep19:10:011
146441299376,5cyclictest1479174-21latency_hist20:35:000
146441299373,31cyclictest0-21swapper/020:25:190
146441299373,31cyclictest0-21swapper/020:25:190
1464412993731,4cyclictest0-21swapper/022:45:280
146441299372,32cyclictest1519299-21find00:25:280
1464416993629,4cyclictest167550irq/134-8000000.ethernet-tx220:40:262
1464416993629,4cyclictest167550irq/134-8000000.ethernet-tx200:00:292
1464416993623,9cyclictest0-21swapper/200:05:222
1464416993623,9cyclictest0-21swapper/200:05:222
146441699361,30cyclictest0-21swapper/223:15:112
146441299361,33cyclictest0-21swapper/023:47:540
146441299361,33cyclictest0-21swapper/022:36:570
146441699359,11cyclictest1499899-21/usr/sbin/munin22:35:182
146441699353,5cyclictest14-21rcu_preempt22:20:282
146441699353,18cyclictest30-21rcuc/220:05:012
1464416993525,6cyclictest1489330-21grep21:30:262
146441699351,28cyclictest0-21swapper/222:15:212
1464416993427,4cyclictest167550irq/134-8000000.ethernet-tx223:35:102
1464416993424,7cyclictest1499591-21grep22:30:272
1464416993424,6cyclictest0-21swapper/222:05:192
1464416993423,6cyclictest1518614-21grep00:20:282
1464416993422,9cyclictest1479109-21grep20:30:282
1464412993428,4cyclictest0-21swapper/022:51:050
146441299341,31cyclictest1485340-21dropbear21:10:160
146441699339,5cyclictest832-21systemd-network23:10:142
1464416993327,4cyclictest167550irq/134-8000000.ethernet-tx221:20:212
1464416993326,4cyclictest311ktimers/200:10:182
1464416993325,5cyclictest0-21swapper/220:55:302
1464416993325,4cyclictest0-21swapper/223:05:202
1464416993324,4cyclictest0-21swapper/219:30:282
146441699331,2cyclictest0-21swapper/220:40:002
1464416993220,8cyclictest0-21swapper/219:35:282
146441699321,26cyclictest0-21swapper/220:50:092
1464412993223,5cyclictest19750irq/27-20000000.i2c20:50:160
1464412993220,6cyclictest1449856-21kworker/u8:1+ext4-rsv-conversion19:10:010
1464416993125,3cyclictest0-21swapper/223:00:312
1464416993121,5cyclictest0-21swapper/200:30:212
1464416993023,4cyclictest167550irq/134-8000000.ethernet-tx220:05:112
1464416993020,6cyclictest1499361-21kworker/2:1+events22:46:172
1464416993020,5cyclictest0-21swapper/223:35:002
146441699301,2cyclictest0-21swapper/222:55:002
146441699301,27cyclictest0-21swapper/200:25:162
1464416992820,4cyclictest0-21swapper/221:00:282
146441699281,2cyclictest0-21swapper/222:15:012
1464416992721,4cyclictest1464357-21apt-key19:10:022
1464416992619,4cyclictest0-21swapper/219:20:392
1464416992618,4cyclictest0-21swapper/220:25:292
1464416992618,4cyclictest0-21swapper/220:25:292
1464416992519,3cyclictest0-21swapper/221:40:142
1464416992516,6cyclictest0-21swapper/220:45:272
1464416992516,6cyclictest0-21swapper/200:15:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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