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2022-08-19 - 12:58

x86 Intel Atom x6425RE @1900 MHz, Linux 5.18.0-rt11 (Profile)

Latency plot of system in rack #e, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h800 -q
Total number of samples: 100 million
Resolution of latency scale: reduced 
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100, highest latencies:
System rackeslot8.osadl.org (updated Mon Jun 06, 2022 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
154732899811,74cyclictest1-21systemd23:59:560
619589670,0phc2sys0-21swapper/121:20:111
619589670,0phc2sys0-21swapper/121:20:111
23903756556,7pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:021:09:383
1547313996558,5cyclictest1560791-21apt-get19:24:270
23903756460,3pubsub_TSN_loop1718421-21kworker/u8:1+flush-8:022:10:113
1547313996055,3cyclictest1781786-21apt-get22:47:030
1547313996055,3cyclictest1591486-21latency_hist19:59:320
23903755955,3pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:020:19:583
23903755955,3pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:020:19:583
1547313995853,4cyclictest262-21systemd-journal00:19:590
154733099570,51cyclictest1803870-21munin-run23:04:520
1547313995650,4cyclictest262-21systemd-journal23:45:090
23905225552,2pubsub_TSN_loop1555056-21kworker/u8:0+flush-8:019:19:513
23901785548,5pubsub_TSN_loop1855490-21kworker/u8:2+flush-8:000:05:212
1547328995546,5cyclictest1705880-21apt-get21:49:520
1547313995550,3cyclictest1705100-21gpgv21:49:440
23905225347,4pubsub_TSN_loop1870469-21kworker/u8:4+flush-8:000:30:243
1547328995345,4cyclictest262-21systemd-journal22:44:480
1547328995345,4cyclictest262-21systemd-journal00:26:380
1547328995345,4cyclictest1837819-21apt-get23:30:040
1547328995344,5cyclictest1635660-21apt-get20:49:470
1547328995244,4cyclictest1817012-21latency_hist23:14:530
1547313995248,3cyclictest262-21systemd-journal20:09:310
1547328995143,4cyclictest1804529-21apt-get23:05:000
1547328995042,4cyclictest1917306-21apt-get00:30:110
23905224946,2pubsub_TSN_loop1697022-21kworker/u8:0+flush-8:021:49:573
23905224945,2pubsub_TSN_loop1885562-21kworker/u8:1+flush-8:000:10:143
23905224945,2pubsub_TSN_loop1803887-21kworker/u8:1+flush-8:023:50:183
1547328994941,4cyclictest1600984-21apt-get20:09:420
23903754845,2pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:020:14:343
1547313994843,4cyclictest1909867-21latency_hist00:25:000
619290470,1ptp4l0-21swapper/121:28:101
23903754743,3pubsub_TSN_loop1747971-21kworker/u8:4+flush-8:023:21:273
23903754743,3pubsub_TSN_loop1682311-21kworker/u8:1+flush-8:021:39:353
1547328994741,4cyclictest262-21systemd-journal20:34:480
23905224642,3pubsub_TSN_loop1747971-21kworker/u8:4+flush-8:023:35:093
23903754643,2pubsub_TSN_loop1855490-21kworker/u8:2+flush-8:000:37:483
23903754643,2pubsub_TSN_loop1748034-21kworker/u8:5+flush-8:023:00:253
1547328994540,4cyclictest262-21systemd-journal19:44:290
1547313994541,3cyclictest1823708-21latency_hist23:19:530
23904204438,3pubsub_TSN_loop1748034-21kworker/u8:5+events_unbound22:39:353
1547328994439,3cyclictest262-21systemd-journal23:20:550
1547328994439,3cyclictest1883846-21latency_hist00:04:580
1547328994438,4cyclictest1745541-21apt-get22:20:030
619589430,0phc2sys0-21swapper/123:45:141
23905224337,4pubsub_TSN_loop745620-21kworker/u8:2+flush-8:019:04:403
23905224336,5pubsub_TSN_loop1833675-21kworker/u8:0+flush-8:023:40:103
23904204338,3pubsub_TSN_loop1755951-21kworker/u8:0+events_unbound22:28:493
23903754340,2pubsub_TSN_loop1682311-21kworker/u8:1+flush-8:021:45:193
23901784338,3pubsub_TSN_loop1803887-21kworker/u8:1+flush-8:023:41:462
23905224236,5pubsub_TSN_loop1748034-21kworker/u8:5+flush-8:022:46:573
23903754239,2pubsub_TSN_loop1682311-21kworker/u8:1+flush-8:021:39:453
23903754239,2pubsub_TSN_loop1671820-21kworker/u8:4+flush-8:021:58:393
1547328994236,4cyclictest1738845-21apt-get22:14:560
1547328994235,5cyclictest262-21systemd-journal19:24:420
1547313994238,3cyclictest1617489-21latency_hist20:29:350
619290410,1ptp4l0-21swapper/123:23:501
619290410,1ptp4l0-21swapper/122:55:111
23905224136,3pubsub_TSN_loop1733134-21kworker/u8:2+flush-8:022:20:023
23903754138,2pubsub_TSN_loop1747971-21kworker/u8:4+flush-8:023:29:443
1547313994137,3cyclictest262-21systemd-journal23:38:060
1547313994136,3cyclictest1626908-21apt-get20:39:440
1547313994136,3cyclictest1626908-21apt-get20:39:440
23905224035,3pubsub_TSN_loop1803887-21kworker/u8:1+flush-8:023:30:163
23904204035,3pubsub_TSN_loop1542806-21kworker/u8:3+flush-8:019:38:323
23903754037,2pubsub_TSN_loop1870469-21kworker/u8:4+flush-8:023:58:533
1547328994036,2cyclictest262-21systemd-journal21:41:240
154731399401,38cyclictest1643601-21munin-run20:59:380
619589390,1phc2sys0-21swapper/100:38:341
619589390,1phc2sys0-21swapper/100:30:361
23905223932,4pubsub_TSN_loop1671820-21kworker/u8:4+flush-8:021:31:493
23904203935,3pubsub_TSN_loop1855490-21kworker/u8:2+events_unbound00:26:203
23904203934,3pubsub_TSN_loop1784070-21kworker/u8:2+flush-8:023:11:323
1547313993936,2cyclictest1725818-21apt-get22:04:560
619589380,0phc2sys0-21swapper/123:08:391
23905223833,3pubsub_TSN_loop1747971-21kworker/u8:4+flush-8:022:53:403
23904203835,2pubsub_TSN_loop1617353-21kworker/u8:3+events_unbound21:10:363
23904203834,1pubsub_TSN_loop1726528-21kworker/u8:0+flush-8:022:18:243
23903753835,2pubsub_TSN_loop1748034-21kworker/u8:5+flush-8:022:44:063
23903753833,3pubsub_TSN_loop1870469-21kworker/u8:4+flush-8:000:09:563
23901783834,2pubsub_TSN_loop1718421-21kworker/u8:1+flush-8:022:14:362
1547328993833,4cyclictest262-21systemd-journal22:54:490
1547328993833,4cyclictest262-21systemd-journal21:59:220
1547328993833,4cyclictest262-21systemd-journal00:12:330
1547328993832,4cyclictest262-21systemd-journal23:54:080
1547313993834,3cyclictest262-21systemd-journal23:41:010
1547313993834,2cyclictest262-21systemd-journal22:58:340
23904203733,3pubsub_TSN_loop1747971-21kworker/u8:4+events_unbound22:59:113
23904203733,3pubsub_TSN_loop1617353-21kworker/u8:3+events_unbound22:08:083
23904203732,3pubsub_TSN_loop1755951-21kworker/u8:0+events_unbound22:33:423
23903753734,2pubsub_TSN_loop1662715-21kworker/u8:2+flush-8:021:17:513
23903753734,2pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:020:14:493
23901783732,3pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:020:39:582
23901783732,3pubsub_TSN_loop1567759-21kworker/u8:1+flush-8:020:39:582
1547328993732,3cyclictest262-21systemd-journal21:24:410
1547328993732,3cyclictest262-21systemd-journal21:24:410
1547328993730,5cyclictest262-21systemd-journal22:29:480
619589360,1phc2sys0-21swapper/122:40:001
619290360,1ptp4l0-21swapper/121:46:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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