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2024-04-16 - 16:24
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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 Tue Apr 16, 2024 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174842899130123,5cyclictest1754800-21kworker/u8:0+events_unbound19:45:031
174842899125115,7cyclictest1774884-21latency_hist20:30:011
174842899124114,7cyclictest1808293-21latency_hist22:15:011
174842799122111,8cyclictest1778083-21latency_hist20:40:000
174842899121110,8cyclictest1831360-21latency_hist23:25:011
174842899121110,8cyclictest1757968-21latency_hist19:40:011
174842899116109,5cyclictest1762975-21apt-get19:55:011
1748427991121,106cyclictest1-21systemd00:05:290
174842799111100,8cyclictest1855542-21latency_hist00:40:010
174842899109101,5cyclictest1821788-21kworker/u8:0+events_unbound23:15:151
174842899107101,4cyclictest1766451-21kworker/u8:3+events_unbound20:30:241
17484289910699,5cyclictest1848888-21kworker/u8:3+events_unbound00:30:031
17484289910699,5cyclictest1848888-21kworker/u8:3+events_unbound00:30:031
174842899106101,4cyclictest1803551-21kworker/u8:0+events_unbound22:40:021
17484289910598,5cyclictest1816913-21gpgv22:40:001
17484289910497,6cyclictest1746841-21kworker/u8:0+events_unbound19:15:001
17484289910495,7cyclictest1814920-21latency_hist22:35:011
17484289910495,7cyclictest1814920-21latency_hist22:35:011
17484289910396,5cyclictest1837771-21kworker/u8:3+events_unbound23:55:241
17484289910396,5cyclictest1837771-21kworker/u8:3+events_unbound23:55:231
17484289910288,11cyclictest2158010-21systemd-journal23:10:001
1748428999994,4cyclictest1748386-21kworker/u8:3+flush-179:019:15:231
1748428999994,4cyclictest1748386-21kworker/u8:3+flush-179:019:15:231
1748428999994,4cyclictest1745316-21kworker/u8:1+events_unbound19:40:241
1748428999993,4cyclictest1748386-21kworker/u8:3+events_unbound19:25:171
1748428999891,5cyclictest1835928-21kworker/u8:2+flush-179:000:00:261
1748428999879,17cyclictest1798995-21kworker/u8:1+flush-179:022:50:001
1748427999889,6cyclictest1769845-21latency_hist20:15:010
1748427999889,6cyclictest1754800-21kworker/u8:0+flush-179:020:05:160
1748427999888,7cyclictest1789178-21kworker/u8:1+flush-179:021:15:010
1748428999792,4cyclictest1842474-21kworker/u8:1+events_unbound00:05:271
1748428999792,4cyclictest1835928-21kworker/u8:2+flush-179:000:25:221
1748428999790,5cyclictest1835928-21kworker/u8:2+events_unbound00:20:241
1748428999687,6cyclictest1792392-21latency_hist21:25:021
1748428999687,6cyclictest1792392-21latency_hist21:25:011
1748428999588,5cyclictest1808328-21kworker/u8:3+events_unbound22:20:251
1748428999587,5cyclictest1787592-21kworker/u8:0+events_unbound21:10:301
1748428999586,6cyclictest1816051-21kworker/u8:2+events_unbound23:00:141
1748428999582,10cyclictest1755011-21apt-get19:30:051
1748427999586,7cyclictest1817300-21apt-get22:40:130
1748427999585,8cyclictest1748626-21/usr/sbin/munin19:10:140
1748428999490,3cyclictest1800322-21kworker/u8:3+flush-179:022:05:231
1748428999486,6cyclictest1821788-21kworker/u8:0+events_unbound23:25:151
1748428999389,3cyclictest1847654-21kworker/u8:0+flush-179:000:15:271
1748428999389,3cyclictest1748386-21kworker/u8:3+flush-179:019:20:191
1748428999387,5cyclictest1754800-21kworker/u8:0+events_unbound20:10:261
1748428999382,8cyclictest1799300-21diskstats21:45:181
1748428999187,3cyclictest1831339-21kworker/u8:1+events_unbound23:30:281
1748428999187,3cyclictest1795555-21kworker/u8:3+events_unbound21:35:281
1748428999186,4cyclictest1800322-21kworker/u8:3+events_unbound21:50:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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