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2024-04-13 - 06:12
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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 100 highest latencies:
System rackeslot6.osadl.org (updated Sat Apr 13, 2024 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208435399136124,9cyclictest2146037-21latency_hist22:20:011
208434999124116,6cyclictest2147602-21kworker/u8:1+events_unbound22:30:350
208435399122116,4cyclictest2164140-21kworker/u8:2+events_unbound23:40:231
208434999118109,6cyclictest2155870-21kworker/u8:1+events_unbound22:50:210
208434999117110,4cyclictest2150788-21kworker/u8:2+flush-179:022:40:330
208434999117106,7cyclictest2114746-21kworker/u8:2+events_unbound20:55:310
208435399114103,8cyclictest2155870-21kworker/u8:1+flush-179:023:45:321
208435399112102,8cyclictest2158924-21kworker/u8:0+flush-179:023:00:011
208434999112103,7cyclictest2164140-21kworker/u8:2+flush-179:023:40:300
208434999110103,5cyclictest2155870-21kworker/u8:1+events_unbound23:15:240
20843539910997,9cyclictest2116349-21latency_hist20:50:011
208435399109104,4cyclictest2150788-21kworker/u8:2+flush-179:022:35:311
208435399109104,4cyclictest2150788-21kworker/u8:2+flush-179:022:35:301
208434999109103,4cyclictest2088510-21kworker/u8:1+flush-179:019:25:320
208434999109100,6cyclictest2134148-21kworker/u8:0+events_unbound22:05:010
208435399108100,5cyclictest2134148-21kworker/u8:0+flush-179:021:50:311
208434999108103,3cyclictest2102022-21kworker/u8:3+flush-179:020:10:370
208434999108100,6cyclictest2158924-21kworker/u8:0+flush-179:023:05:310
20843539910799,5cyclictest2158924-21kworker/u8:0+flush-179:023:05:261
20843539910796,8cyclictest2092229-21apt-get19:35:001
20843539910698,6cyclictest2118230-21kworker/u8:1+flush-179:021:15:331
20843539910697,7cyclictest2164140-21kworker/u8:2+flush-179:023:55:001
20843539910695,8cyclictest2099469-21kworker/u8:0+flush-179:020:25:241
20843539910599,4cyclictest2181720-21kworker/u8:0+flush-179:000:15:241
20843499910598,4cyclictest2164140-21kworker/u8:2+flush-179:000:00:260
20843499910597,5cyclictest2130960-21kworker/u8:1+flush-179:021:55:210
20843569910497,5cyclictest2168907-21turbostat23:30:003
20843539910496,5cyclictest2097273-21kworker/u8:2+flush-179:019:50:201
20843499910498,5cyclictest2081282-21kworker/u8:2+flush-179:019:35:330
20843539910395,5cyclictest2185764-21kworker/u8:1+flush-179:000:20:311
20843539910395,5cyclictest2088510-21kworker/u8:1+flush-179:019:55:241
20843499910382,14cyclictest2134148-21kworker/u8:0+events_unbound22:25:320
20843539910293,6cyclictest2071045-21kworker/u8:0+events_unbound19:15:301
20843499910296,4cyclictest2134148-21kworker/u8:0+flush-179:022:15:300
20843539910195,4cyclictest2137324-21kworker/u8:2+events_unbound22:20:311
20843539910194,5cyclictest2134148-21kworker/u8:0+flush-179:022:05:021
20843539910094,4cyclictest2095653-21kworker/u8:3+flush-179:019:45:321
20843539910092,5cyclictest2106804-21latency_hist20:20:021
20843499910093,5cyclictest2124592-21kworker/u8:3+events_unbound21:45:010
2084353999989,7cyclictest2189645-21latency_hist00:35:011
2084349999992,5cyclictest2181720-21kworker/u8:0+events_unbound00:15:320
2084349999991,5cyclictest2155870-21kworker/u8:1+flush-179:023:00:310
2084349999885,9cyclictest2123228-21apt-get21:10:180
2084349999792,4cyclictest2155870-21kworker/u8:1+flush-179:023:40:000
2084349999790,5cyclictest2099469-21kworker/u8:0+flush-179:020:00:320
2084349999789,5cyclictest2140979-21kworker/u8:3+flush-179:022:05:210
2084349999788,5cyclictest2155870-21kworker/u8:1+flush-179:023:50:320
2084353999690,4cyclictest2134148-21kworker/u8:0+events_unbound22:25:231
2084353999689,5cyclictest2164140-21kworker/u8:2+events_unbound23:55:331
2084349999689,6cyclictest2134148-21kworker/u8:0+events_unbound22:24:590
2084349999689,5cyclictest2155870-21kworker/u8:1+flush-179:023:10:020
2084349999687,6cyclictest2109983-21latency_hist20:30:010
2084353999589,4cyclictest2122439-21kworker/u8:0+events_unbound21:10:201
2084349999589,4cyclictest2097273-21kworker/u8:2+events_unbound19:55:320
2084349999586,7cyclictest2186711-21/usr/sbin/munin00:25:320
2084349999586,6cyclictest2122973-21latency_hist21:10:020
2084349999585,7cyclictest2158010-21systemd-journal21:55:000
2084353999488,4cyclictest2140979-21kworker/u8:3+events_unbound22:45:291
2084353999486,5cyclictest2155870-21kworker/u8:1+events_unbound23:25:281
2084349999489,3cyclictest2099469-21kworker/u8:0+flush-179:020:30:270
2084349999488,4cyclictest2134148-21kworker/u8:0+events_unbound22:15:020
2084349999486,5cyclictest2078232-21kworker/u8:1+events_unbound19:10:430
2084353999387,4cyclictest2088510-21kworker/u8:1+flush-179:019:35:221
2084353999380,9cyclictest2158010-21systemd-journal00:35:311
2084349999387,4cyclictest2099469-21kworker/u8:0+flush-179:020:40:260
2084353999286,4cyclictest2185764-21kworker/u8:1+flush-179:000:25:311
2084353999283,7cyclictest2175293-21kworker/u8:3+flush-179:000:10:341
2084353999280,4cyclictest2088510-21kworker/u8:1+events_unbound19:25:261
2084349999286,4cyclictest2084292-21kworker/u8:3+flush-179:019:15:330
2084349999284,6cyclictest2185764-21kworker/u8:1+events_unbound00:20:330
2084353999180,8cyclictest2127753-21latency_hist21:25:011
2084353999180,8cyclictest2114765-21latency_hist20:45:011
2084353999084,4cyclictest2114746-21kworker/u8:2+events_unbound21:05:281
2084353998983,4cyclictest2099469-21kworker/u8:0+flush-179:020:30:281
2084353998982,5cyclictest2099469-21kworker/u8:0+flush-179:020:05:001
2084349998984,4cyclictest2150788-21kworker/u8:2+flush-179:022:35:310
2084349998984,4cyclictest2150788-21kworker/u8:2+flush-179:022:35:310
2084349998982,4cyclictest2114746-21kworker/u8:2+flush-179:021:20:260
2084353998883,4cyclictest2155870-21kworker/u8:1+events_unbound23:15:341
2084353998882,4cyclictest2129321-21kworker/u8:0+flush-179:021:30:281
2084353998881,5cyclictest2124592-21kworker/u8:3+flush-179:021:45:301
2084353998879,7cyclictest2071045-21kworker/u8:0+flush-179:019:20:281
2084353998879,6cyclictest2180338-21/usr/sbin/munin00:05:251
2084353998875,11cyclictest2084523-21apt-get19:10:341
2084349998883,3cyclictest2090333-21kworker/u8:0+flush-179:019:40:330
2084349998876,9cyclictest2178462-40mandb00:00:010
2084353998781,4cyclictest2124592-21kworker/u8:3+flush-179:021:25:221
2084353998780,5cyclictest2081282-21kworker/u8:2+flush-179:019:40:331
2084349998776,9cyclictest2169144-21apt-get23:30:190
2084353998678,6cyclictest2118195-21latency_hist20:55:011
208434999861,78cyclictest2190702-21sshd00:35:310
2084353998580,4cyclictest2158924-21kworker/u8:0+flush-179:023:20:311
2084353998576,6cyclictest2155870-21kworker/u8:1+events_unbound23:00:261
2084349998580,4cyclictest2105236-21kworker/u8:2+flush-179:020:20:310
2084349998579,4cyclictest2118230-21kworker/u8:1+flush-179:021:25:350
2084349998578,4cyclictest2164140-21kworker/u8:2+events_unbound23:45:240
2084349998575,6cyclictest2124592-21kworker/u8:3+flush-179:021:45:280
2084353998476,6cyclictest2129322-21kworker/u8:2+events_unbound21:40:011
2084353998470,10cyclictest2158010-21systemd-journal22:30:311
2084349998477,5cyclictest2140979-21kworker/u8:3+flush-179:022:45:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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