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2025-12-29 - 15:18
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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
Characteristics of the 50 highest latencies:
System rackbslot1.osadl.org (updated Mon Dec 29, 2025 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11478502212171,10sleep30-21swapper/307:08:483
11477262208185,13sleep10-21swapper/107:07:101
11477152201154,39sleep00-21swapper/007:07:010
11478392197160,29sleep20-21swapper/207:08:402
1148140997470,3cyclictest1180651-21kworker/u8:1+flush-179:007:50:321
114814199603,56cyclictest1271040-21kworker/u8:0+efi_rts_wq09:31:282
1148140996057,2cyclictest1307200-21kworker/u8:4+events_unbound09:45:341
1148140996057,2cyclictest1307200-21kworker/u8:4+events_unbound09:45:341
1148143995943,14cyclictest1185538-21chrome07:45:023
1148140995944,13cyclictest1338868-21kworker/u8:4+flush-179:010:30:071
1148140995851,5cyclictest1370337-21latency_hist10:45:001
1148140995850,6cyclictest1329677-21/usr/share/muni10:05:011
1148143995710,46cyclictest1210671-21kworker/u8:3+efi_rts_wq09:31:343
1148140995753,3cyclictest1210671-21kworker/u8:3+events_unbound09:35:141
1148140995751,4cyclictest1386479-21kworker/u8:3+events_unbound11:06:111
1148140995651,3cyclictest1251358-21kworker/u8:4+events_unbound09:00:091
1148140995641,3cyclictest1354667-31munin-graph10:25:551
1148136995653,2cyclictest1158862-21kworker/u8:0+flush-179:008:15:300
1148141995550,4cyclictest1339879-21/usr/share/muni10:15:082
1148140995549,5cyclictest1210671-21kworker/u8:3+flush-179:009:30:311
1148141995450,3cyclictest1247079-21chrome08:45:012
1148140995449,3cyclictest1385944-21kworker/u8:1+events_unbound11:10:311
1148141995349,3cyclictest1158862-21kworker/u8:0+flush-179:008:00:242
1148140995348,3cyclictest1271040-21kworker/u8:0+flush-179:009:52:511
1148140995348,3cyclictest1180651-21kworker/u8:1+flush-179:007:49:181
1148140995348,3cyclictest1131929-21kworker/u8:3+flush-179:007:30:211
1148140995344,8cyclictest1195396-21kworker/u8:2+flush-179:007:55:151
1148136995347,5cyclictest1345089-21/usr/share/muni10:20:040
1148136995344,8cyclictest1375841-21/usr/share/muni10:50:160
1148140995248,3cyclictest1417151-21kworker/u8:0+events_unbound11:57:011
1148140995247,4cyclictest1350407-21kworker/u8:0+events_unbound10:35:141
1148140995247,3cyclictest247557-21chrome09:05:371
1148136995246,4cyclictest1169487-21latency_hist07:30:010
1148140995146,3cyclictest1463650-21kworker/u8:1+flush-179:012:35:201
1148140995136,14cyclictest1158862-21kworker/u8:0+events_unbound08:06:421
1148140995046,3cyclictest1350407-21kworker/u8:0+flush-179:010:51:431
1148140995045,3cyclictest1484175-21kworker/u8:2+flush-179:012:32:571
1148136995044,4cyclictest1489555-21latency_hist12:40:010
1148143994941,6cyclictest3125724-21ThreadPoolForeg07:15:153
1148141994944,3cyclictest1360380-21/usr/share/muni10:35:122
1148140994945,3cyclictest1385944-21kworker/u8:1+flush-179:011:50:171
1148140994945,3cyclictest1385944-21kworker/u8:1+flush-179:011:21:431
1148140994945,3cyclictest1278658-21kworker/u8:1+events_unbound09:15:201
1148140994945,3cyclictest1131929-21kworker/u8:3+flush-179:007:44:071
1148140994944,4cyclictest1251358-21kworker/u8:4+flush-179:008:55:291
1148140994943,4cyclictest1195396-21kworker/u8:2+events_unbound08:10:331
1148140994933,11cyclictest1323928-21kworker/u8:2+events_unbound10:02:041
1148141994843,3cyclictest1370649-21chrome10:45:022
1148141994843,3cyclictest1370649-21chrome10:45:022
1148141994826,22cyclictest1115618-21kworker/u8:2+flush-179:007:30:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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