You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-05-02 - 12:45
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 Fri May 02, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124731099133118,12cyclictest1340790-40mandb00:00:001
124731099122116,4cyclictest1265019-21kworker/u8:2+flush-179:020:10:241
124731099122115,4cyclictest1334127-21kworker/u8:2+events_unbound23:40:011
124730999116102,11cyclictest1261667-21gpgv19:55:000
124730999111102,7cyclictest1250397-21kworker/u8:0+flush-179:019:20:210
124730999111102,7cyclictest1250397-21kworker/u8:0+flush-179:019:20:200
124730999110102,6cyclictest1337573-21kworker/u8:0+events_unbound00:04:000
12473099910896,9cyclictest1284334-21latency_hist21:05:000
12473109910798,6cyclictest1289342-21kworker/u8:3+events_unbound22:10:141
12473099910798,7cyclictest1284831-21kworker/u8:1+flush-179:021:20:270
12473099910697,7cyclictest1289342-21kworker/u8:3+events_unbound21:50:020
12473099910695,9cyclictest1340790-40mandb00:00:010
12473109910493,8cyclictest1316661-21latency_hist22:45:011
12473099910494,7cyclictest1257044-21apt-get19:40:200
12473099910391,9cyclictest1326188-21latency_hist23:15:000
12473109910292,7cyclictest1334192-21http23:40:011
12473109910291,8cyclictest1258611-21/usr/sbin/munin19:45:281
12473109910195,4cyclictest1284831-21kworker/u8:1+events_unbound21:30:201
12473109910193,5cyclictest1289342-21kworker/u8:3+events_unbound21:25:191
12473099910188,10cyclictest1275040-21apt-get20:35:120
1247309999990,7cyclictest1337848-21apt-get23:50:150
1247309999987,4cyclictest1279579-21kworker/u8:2+events_unbound20:50:180
1247309999890,5cyclictest1321402-21kworker/u8:1+flush-179:023:30:230
1247310999789,7cyclictest1310333-21kworker/u8:2+events_unbound22:45:211
1247310999789,5cyclictest1284831-21kworker/u8:1+events_unbound21:20:201
1247309999789,6cyclictest1255162-21kworker/u8:0+events_unbound19:55:020
1247310999689,5cyclictest1321402-21kworker/u8:1+events_unbound23:10:001
1247309999688,6cyclictest1321402-21kworker/u8:1+flush-179:023:40:220
1247310999582,4cyclictest1245747-21kworker/u8:3+events_unbound19:10:221
1247309999588,5cyclictest1344051-21kworker/u8:1+flush-179:000:15:010
1247309999586,7cyclictest1289342-21kworker/u8:3+events_unbound21:40:180
1247310999487,4cyclictest1310333-21kworker/u8:2+events_unbound22:35:141
1247310999487,4cyclictest1310333-21kworker/u8:2+events_unbound22:35:141
1247310999379,5cyclictest1255162-21kworker/u8:0+flush-179:019:55:241
1247309999383,8cyclictest1302318-21kworker/u8:2+events_unbound22:05:240
1247310999181,7cyclictest1310333-21kworker/u8:2+events_unbound22:30:221
1247309999178,10cyclictest1292798-21apt-get21:30:170
1247310999082,6cyclictest1340839-21kworker/u8:2+events_unbound00:15:151
1247310999082,6cyclictest1307131-21kworker/u8:0+events_unbound22:25:171
1247310998979,8cyclictest1270285-21apt-get20:20:151
1247309998982,6cyclictest1292527-21kworker/u8:0+flush-179:022:00:000
1247309998976,4cyclictest1268183-21kworker/u8:4+flush-179:020:15:240
1247310998882,4cyclictest1345617-21kworker/u8:4+flush-179:000:25:221
1247310998877,3cyclictest1255162-21kworker/u8:0+flush-179:019:35:151
1247310998781,4cyclictest1286417-21kworker/u8:0+flush-179:021:10:251
1247309998782,3cyclictest1334127-21kworker/u8:2+events_unbound23:45:230
1247309998780,5cyclictest1287227-21kworker/u8:2+flush-179:021:15:210
1247309998674,9cyclictest1294385-21apt-get21:35:150
1247310998577,5cyclictest1350696-21store00:30:011
1247310998577,5cyclictest1265019-21kworker/u8:2+flush-179:020:25:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional