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2026-06-28 - 14:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Sun Jun 28, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13998602600,4chrt0-21swapper/008:40:000
13998602600,4chrt0-21swapper/008:40:000
1308315995751,4cyclictest4147736-21kworker/u8:4+flush-8:007:55:311
1308313995544,8cyclictest1542967-21ntpq11:00:230
1308313995544,8cyclictest1542967-21ntpq11:00:230
15342152540,4sleep375-21kworker/3:1+mm_percpu_wq10:55:123
1308313995434,17cyclictest1384020-21ntpq08:20:260
1308315995343,7cyclictest1638497-21latency_hist12:40:021
1308313995137,12cyclictest1504405-21apt-get10:25:120
1308313994940,7cyclictest1359908-21apt-get08:00:000
1308313994940,6cyclictest1313235-21latency_hist07:15:010
1308318994838,8cyclictest1704890-21systemd-journal08:40:002
1308318994838,8cyclictest1704890-21systemd-journal08:39:592
1308313994841,5cyclictest1704890-21systemd-journal11:30:500
1308315994738,7cyclictest1350300-21/usr/sbin/munin07:50:251
1308315994735,9cyclictest1704890-21systemd-journal12:05:271
1308313994737,7cyclictest1369125-21ntpq08:05:250
1308313994726,18cyclictest1554421-21aten2_r5power_p11:15:160
1308315994538,5cyclictest1704890-21systemd-journal09:15:191
1308315994529,13cyclictest1704890-21systemd-journal09:42:271
1308315994529,13cyclictest1519108-21latency_hist10:40:011
1308313994527,15cyclictest1448455-21ntpq09:25:250
1308313994513,10cyclictest1628478-21sshd12:29:260
1308315994435,7cyclictest1308158-21kworker/u8:0+flush-8:007:25:261
130831599440,42cyclictest1-21systemd09:35:011
1308313994436,5cyclictest1389899-21latency_hist08:30:010
1308315994336,5cyclictest1494186-21latency_hist10:15:001
1308315994327,13cyclictest1704890-21systemd-journal11:47:261
1308313994320,8cyclictest1349113-21ntpq07:45:260
1308315994230,9cyclictest1704890-21systemd-journal09:49:271
1308313994236,4cyclictest1704890-21systemd-journal07:31:270
130831399422,11cyclictest1410019-21chrt08:50:160
1308313994219,3cyclictest1430332-21tr09:10:200
16010202410,2sleep375-21kworker/3:1+mm_percpu_wq12:00:213
16010202410,2sleep375-21kworker/3:1+mm_percpu_wq12:00:203
13478082410,5chrt30-21ksoftirqd/107:45:231
1308318994134,5cyclictest1483111-21journal-offline10:00:272
1308315994130,9cyclictest1593902-21cron11:55:001
1308313994124,15cyclictest1474669-21fschecks_count09:55:170
130831399412,17cyclictest583-21snmpd10:55:120
1308313994121,6cyclictest1423575-21grep09:00:260
1308313994120,2cyclictest0-21swapper/010:50:330
1308313994120,19cyclictest1464604-21aten2_r5power_v09:45:160
130831399411,18cyclictest1459010-21sshd09:36:260
1308315994012,16cyclictest0-21swapper/112:10:151
1308313994029,8cyclictest1704890-21systemd-journal12:09:590
1308313994020,18cyclictest1494217-21latency_hist10:15:010
1308315993929,8cyclictest1704890-21systemd-journal10:29:591
1308313993922,14cyclictest1594409-21cpuspeed_turbos11:55:140
130831399392,13cyclictest583-21snmpd07:35:300
1308313993917,6cyclictest1584047-21latency_hist11:45:000
1308313993917,2cyclictest0-21swapper/012:20:330
1308313993917,2cyclictest0-21swapper/007:20:170
1308313993915,3cyclictest0-21swapper/008:40:240
1308318993829,7cyclictest1704890-21systemd-journal07:55:002
1308318993824,12cyclictest1513097-21tail10:30:262
1308318993823,13cyclictest1609079-21aten2_r5power_e12:10:142
1308318993822,14cyclictest1563955-21turbostat.cron11:25:002
1308315993829,7cyclictest1374120-21ntpq08:10:271
1308315993825,11cyclictest1543912-21cron11:05:001
1308315993825,11cyclictest1543912-21cron11:04:591
1308315993821,14cyclictest1365122-21latency_hist08:05:001
1308313993819,3cyclictest1548105-21needreboot11:05:240
1308313993819,2cyclictest0-21swapper/007:44:590
1308313993817,4cyclictest1591413-21tr11:50:240
1308313993815,7cyclictest1704890-21systemd-journal09:35:000
1308313993815,3cyclictest0-21swapper/012:00:230
1308313993815,3cyclictest0-21swapper/012:00:230
130831599373,20cyclictest1315849-21if_enp4s007:15:211
1308315993729,6cyclictest1414663-21latency_hist08:55:021
1308315993723,12cyclictest1320374-21apt-get07:20:141
1308313993727,8cyclictest1553120-21ntpq11:10:250
130831399371,8cyclictest1578663-21unixbench_singl11:35:360
1308313993718,2cyclictest0-21swapper/008:55:310
130831399371,7cyclictest1503264-21ntpq10:20:260
1308313993717,2cyclictest0-21swapper/009:40:210
1308313993715,6cyclictest1483662-21unixbench_singl10:00:350
13034472373,26sleep01303473-21apt-get07:05:130
130831899367,3cyclictest0-21swapper/211:35:212
1308318993628,6cyclictest1704890-21systemd-journal11:30:002
1308315993623,10cyclictest1434120-21unixbench_singl09:10:331
130831599360,9cyclictest1439867-21aten2_r5power_v09:20:151
1308313993627,7cyclictest1408848-21ntpq08:45:290
130831399362,14cyclictest1488296-21sshd10:05:260
1308313993619,6cyclictest1704890-21systemd-journal12:15:590
1308313993618,3cyclictest0-21swapper/009:20:150
1308313993615,3cyclictest0-21swapper/008:15:150
1308313993615,2cyclictest0-21swapper/010:15:290
130831399361,13cyclictest583-21snmpd07:25:140
1308315993524,9cyclictest0-21swapper/112:30:221
1308313993527,6cyclictest1613699-21latency_hist12:15:020
130831399351,14cyclictest1361140-21sed08:00:210
130831399350,33cyclictest1354988-21true07:55:000
1308318993428,4cyclictest1449008-21unixbench_singl09:25:322
130831899342,14cyclictest1494445-21apt-get10:15:132
130831899341,4cyclictest1413739-21ntpq08:50:282
130831599343,25cyclictest0-21swapper/109:05:151
130831599343,15cyclictest0-21swapper/110:30:231
1308315993422,10cyclictest1569159-21cron11:29:591
13078382344,10sleep10-21swapper/107:06:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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