You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-03 - 21:29
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 Wed Dec 03, 2025 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
322714199118105,11cyclictest3301292-21latency_hist11:00:011
32271419910095,4cyclictest3306351-21kworker/u8:3+events_unbound11:30:251
32271419910088,4cyclictest3254660-21kworker/u8:3+events_unbound09:15:241
3227141999891,5cyclictest3306351-21kworker/u8:3+events_unbound11:25:231
3227140999786,8cyclictest3240047-21latency_hist07:50:000
3227140999786,8cyclictest3240047-21latency_hist07:50:000
3227141999388,3cyclictest3254660-21kworker/u8:3+events_unbound09:05:231
3227141999287,4cyclictest3287200-21kworker/u8:1+events_unbound10:15:251
3227141999085,4cyclictest3251435-21kworker/u8:1+events_unbound08:30:241
3227140998978,8cyclictest3242129-21/usr/sbin/munin07:55:230
3227140998878,8cyclictest3296762-21/usr/sbin/munin10:45:240
3227141998581,3cyclictest3306351-21kworker/u8:3+events_unbound11:45:231
3227141998480,3cyclictest3254660-21kworker/u8:3+events_unbound08:35:251
3227141998375,3cyclictest3306351-21kworker/u8:3+events_unbound11:40:241
3227141998273,3cyclictest3269530-21kworker/u8:1+events_unbound10:05:261
3227140998275,5cyclictest1-21systemd10:19:590
3227141998171,7cyclictest3330446-21latency_hist12:30:021
3227140998073,5cyclictest3298346-21/usr/sbin/munin10:50:220
3227140997767,7cyclictest3262588-21latency_hist09:00:010
3227141997672,3cyclictest3269530-21kworker/u8:1+events_unbound10:00:251
3227141997672,3cyclictest3269530-21kworker/u8:1+events_unbound09:45:241
3227141997672,3cyclictest3254660-21kworker/u8:3+events_unbound08:45:231
3227141997672,3cyclictest3230251-21kworker/u8:2+events_unbound07:25:431
3227141997671,4cyclictest3230251-21kworker/u8:2+events_unbound07:35:261
3227140997465,6cyclictest3259402-21latency_hist08:50:010
3227141997160,4cyclictest3269530-21kworker/u8:1+events_unbound09:20:201
3227140997161,7cyclictest3231811-21latency_hist07:25:010
3227140997161,7cyclictest3231811-21latency_hist07:25:000
3227141997066,3cyclictest3322474-21kworker/u8:0+events_unbound12:20:261
3227141997061,3cyclictest3230251-21kworker/u8:2+events_unbound07:50:191
3227141996958,8cyclictest3286963-21latency_hist10:15:011
3227141996864,3cyclictest3254660-21kworker/u8:3+events_unbound09:30:251
3227141996863,4cyclictest3287200-21kworker/u8:1+flush-179:010:45:261
3227141996859,6cyclictest3306315-21latency_hist11:15:011
3227140996861,5cyclictest3328328-21kworker/u8:1+flush-179:012:30:000
3227140996861,5cyclictest3233430-21kworker/u8:3+flush-179:008:10:170
3227141996762,4cyclictest3275287-21kworker/u8:0+flush-179:009:40:271
3227141996560,4cyclictest3285365-21kworker/u8:0+events_unbound10:35:241
3227141996560,4cyclictest3270525-21kworker/u8:2+flush-179:009:35:161
3227141996560,4cyclictest3233430-21kworker/u8:3+events_unbound08:10:191
3227140996560,4cyclictest3269530-21kworker/u8:1+flush-179:009:50:240
3227140996556,5cyclictest3306351-21kworker/u8:3+events_unbound11:55:250
3227141996460,3cyclictest3304707-21kworker/u8:2+events_unbound11:15:231
3227141996459,4cyclictest3306351-21kworker/u8:3+flush-179:011:39:561
3227141996457,5cyclictest3270781-21/usr/sbin/munin09:25:231
3227140996456,6cyclictest3331326-21kworker/u8:0+flush-179:012:30:230
3227140996455,7cyclictest3270545-21latency_hist09:25:000
3227141996358,4cyclictest3285365-21kworker/u8:0+flush-179:010:54:541
3227141996358,4cyclictest3233430-21kworker/u8:3+flush-179:008:09:551
3227141996357,4cyclictest3280352-21apt-get09:55:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional