You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-13 - 22:49
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.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rackeslot6.osadl.org (updated Sun Jul 13, 2025 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19903159910997,9cyclictest2012780-21latency_hist08:20:010
19903189910492,9cyclictest1998438-21latency_hist07:35:011
19903189910194,4cyclictest2035357-21kworker/u8:3+flush-179:012:15:011
1990318999791,4cyclictest2075903-21kworker/u8:0+events_unbound11:40:261
1990318999786,8cyclictest2064269-21latency_hist11:00:021
1990315999785,9cyclictest2008397-21kworker/u8:1+flush-179:008:10:010
1990318999484,6cyclictest1990200-21latency_hist07:10:011
1990315999378,11cyclictest2074080-21latency_hist11:30:000
1990315999287,4cyclictest2012808-21kworker/u8:2+flush-179:008:40:000
1990318999180,8cyclictest2082524-21/usr/sbin/munin11:55:251
1990315999180,8cyclictest2048358-21latency_hist10:10:010
1990318999072,13cyclictest2031879-21latency_hist09:20:021
1990315999079,8cyclictest2022330-21latency_hist08:50:010
1990315998976,11cyclictest2045443-21apt-get10:00:150
1990318998881,5cyclictest2035297-21kworker/u8:0+flush-179:009:30:261
1990318998781,4cyclictest2035357-21kworker/u8:3+flush-179:010:05:261
1990318998773,12cyclictest3105085-21systemd-journal09:00:001
1990315998776,9cyclictest2064538-21apt-get11:00:120
1990315998775,10cyclictest2022586-21apt-get08:50:150
1990318998679,5cyclictest2080737-21kworker/u8:1+flush-179:012:05:201
1990318998679,5cyclictest2012808-21kworker/u8:2+flush-179:008:40:251
1990318998579,4cyclictest2075903-21kworker/u8:0+flush-179:011:35:221
1990318998478,4cyclictest2035357-21kworker/u8:3+flush-179:010:10:261
1990318998478,4cyclictest2035357-21kworker/u8:3+flush-179:010:10:251
1990318998478,4cyclictest2024455-21kworker/u8:0+events_unbound09:00:251
1990318998376,6cyclictest1991848-21kworker/u8:2+flush-179:007:25:001
1990318998277,4cyclictest2090569-21kworker/u8:2+flush-179:012:35:251
1990318998272,8cyclictest2072537-21kworker/u8:1+flush-179:011:30:011
1990315998272,7cyclictest2067455-21latency_hist11:10:000
1990318998176,4cyclictest2054101-21kworker/u8:0+flush-179:010:30:251
1990318998176,4cyclictest2048394-21kworker/u8:2+flush-179:011:00:241
1990318998174,4cyclictest2038547-21kworker/u8:2+flush-179:009:55:151
1990318998173,6cyclictest2051809-21apt-get10:20:131
1990318998173,5cyclictest2072537-21kworker/u8:1+flush-179:011:30:011
1990318998073,5cyclictest2054101-21kworker/u8:0+flush-179:010:40:011
1990318998073,5cyclictest2054101-21kworker/u8:0+flush-179:010:25:231
1990318998068,9cyclictest2066123-21apt-get11:05:121
1990315997969,7cyclictest2038492-21latency_hist09:40:010
1990318997870,6cyclictest2008397-21kworker/u8:1+flush-179:009:40:011
1990318997867,9cyclictest2069167-21gpgv11:15:011
1990315997871,4cyclictest2008397-21kworker/u8:1+flush-179:009:45:260
1990318997772,4cyclictest2008397-21kworker/u8:1+flush-179:008:54:561
1990318997666,6cyclictest2035357-21kworker/u8:3+flush-179:009:40:251
1990315997666,7cyclictest2090507-21latency_hist12:20:010
1990318997565,7cyclictest3105085-21systemd-journal09:45:031
1990315997566,7cyclictest2064325-21kworker/u8:1+flush-179:011:10:220
1990315997564,8cyclictest2043834-21apt-get09:55:130
1990315997563,9cyclictest2095278-21latency_hist12:35:000
1990318997469,4cyclictest1998473-21kworker/u8:1+events_unbound07:35:231
1990318997465,6cyclictest2008397-21kworker/u8:1+events_unbound09:20:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional