You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-06 - 04:51
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 Thu Nov 06, 2025 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1260796999584,8cyclictest1345517-21latency_hist23:35:001
1260794999079,8cyclictest1316892-21latency_hist22:05:010
1260794998272,7cyclictest1328016-21latency_hist22:40:000
1260794998171,7cyclictest1299365-21/usr/sbin/munin21:10:220
1260796997665,8cyclictest1318714-21/usr/sbin/munin22:10:241
1260796997362,8cyclictest1329618-21latency_hist22:45:011
1260796997060,7cyclictest1331442-21/usr/sbin/munin22:50:231
1260796996964,3cyclictest723-21Xorg20:12:591
1260794996862,4cyclictest580558-21kworker/u8:3+flush-179:020:10:250
1260796996756,8cyclictest1286399-21latency_hist20:30:011
1260794996761,3cyclictest723-21Xorg19:58:590
4670791640,18ptp4l61690irq/136-eno1-TxRx-019:09:063
1260794996352,9cyclictest1352133-21apt-get23:55:150
1260796996256,4cyclictest1310304-21kworker/u8:2+flush-179:022:10:011
1260796996052,6cyclictest1302287-21kworker/u8:0+flush-179:022:00:261
1260796996051,7cyclictest271-21systemd-journal21:00:001
1260794996057,2cyclictest0-21swapper/020:32:590
1260801995957,1cyclictest0-21swapper/321:11:593
1260796995933,16cyclictest1263870-21turbostat19:24:551
1260794995851,5cyclictest1353535-21kworker/u8:2+flush-179:000:25:000
1260794995849,6cyclictest1321681-21latency_hist22:20:000
1260799995754,2cyclictest0-21swapper/219:58:592
1260796995736,18cyclictest1358803-21/usr/sbin/munin00:15:261
1260794995747,8cyclictest1278446-21apt-get20:05:120
1260796995649,5cyclictest1353535-21kworker/u8:2+flush-179:000:40:001
126079499560,40cyclictest723-21Xorg22:48:590
1260796995447,5cyclictest1283183-21kworker/u8:2+flush-179:020:40:001
1260796995437,15cyclictest1294348-21latency_hist20:55:021
1260799995249,2cyclictest0-21swapper/220:32:592
1260796995143,6cyclictest1361761-21latency_hist00:25:011
1260794995133,2cyclictest0-21swapper/019:18:590
1260796995032,16cyclictest1312092-21/usr/sbin/munin21:50:231
1260794995045,4cyclictest1350327-21kworker/u8:3+flush-179:000:33:590
1260794995045,3cyclictest1310304-21kworker/u8:2+flush-179:021:59:540
1260794995040,7cyclictest1350293-21latency_hist23:50:010
1260796994932,15cyclictest723-21Xorg19:17:591
1260794994941,6cyclictest1334391-21latency_hist23:00:010
1260794994925,5cyclictest1348711-21latency_hist23:45:010
1260796994828,19cyclictest1348430-21threads23:40:231
1260794994844,3cyclictest1287977-21kworker/u8:1+flush-179:020:35:250
1260794994830,2cyclictest723-21Xorg21:39:580
1260796994744,2cyclictest0-21swapper/119:58:591
1260796994739,7cyclictest475-21dbus-daemon00:05:001
1260796994635,9cyclictest1346057-21diskstats23:35:181
1260794994640,4cyclictest1347172-21kworker/u8:1+events_unbound00:05:230
1260794994639,5cyclictest1292772-21turbostat20:54:560
1260796994541,3cyclictest1335989-21munin-run23:04:591
1260796994538,5cyclictest1292211-21kworker/u8:3+flush-179:021:10:271
1260796994535,7cyclictest1331204-21latency_hist22:50:011
126079699450,43cyclictest723-21Xorg19:49:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional