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2022-08-11 - 16:08

x86 Intel Atom E3845 @1910 MHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #4
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 -Up99 -i200 -h400 --smi -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100, highest latencies:
System rackdslot4.osadl.org (updated Thu Aug 11, 2022 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1331421800,8sleep03248599cyclictest12:10:190
129891146123,10phc2sys0-21swapper/307:07:473
320272824,17sleep00-21swapper/007:09:000
191832750,5sleep319189-21irqrtprio10:05:253
129991690,2ptp4l32705-21apt-get07:10:133
129991570,1ptp4l391rcuc/307:28:253
32487995446,5cyclictest1242-21snmpd12:14:452
285602540,2sleep20-21swapper/208:10:112
285602540,2sleep20-21swapper/208:10:112
241822540,3sleep00-21swapper/011:25:140
56498500,21rtkit-daemon321ktimersoftd/207:07:562
46782500,2sleep30-21swapper/308:25:263
32486994942,4cyclictest25-21ksoftirqd/112:25:001
32488994824,4cyclictest41-21ksoftirqd/311:17:473
32486994840,4cyclictest25-21ksoftirqd/110:50:501
32488994724,4cyclictest41-21ksoftirqd/310:31:113
3248699471,43cyclictest3075-21cron11:50:011
129991460,2ptp4l13688-21ls12:10:233
32486994538,4cyclictest25-21ksoftirqd/109:55:001
1299914531,5ptp4l41-21ksoftirqd/312:35:583
1299914531,5ptp4l41-21ksoftirqd/312:35:583
129991450,1ptp4l401ktimersoftd/309:45:303
129991450,1ptp4l401ktimersoftd/307:30:223
32488994438,3cyclictest41-21ksoftirqd/309:35:003
32486994439,3cyclictest25-21ksoftirqd/111:00:001
32485994438,3cyclictest9-21ksoftirqd/010:30:000
129991440,1ptp4l401ktimersoftd/311:20:033
32486994337,3cyclictest25-21ksoftirqd/110:30:001
32485994336,4cyclictest9-21ksoftirqd/010:06:510
3182224313,19sleep10-21swapper/107:06:221
129991430,1ptp4l401ktimersoftd/307:50:033
32488994236,4cyclictest41-21ksoftirqd/311:05:503
32488994236,4cyclictest41-21ksoftirqd/311:05:503
32488994235,4cyclictest41-21ksoftirqd/309:44:103
32488994235,4cyclictest41-21ksoftirqd/309:44:103
32487994235,4cyclictest33-21ksoftirqd/211:50:302
32487994235,4cyclictest33-21ksoftirqd/211:00:002
32487994235,4cyclictest33-21ksoftirqd/210:50:042
32487994235,4cyclictest33-21ksoftirqd/210:49:592
32487994235,4cyclictest33-21ksoftirqd/208:30:002
32485994237,3cyclictest9-21ksoftirqd/011:54:560
32485994235,4cyclictest9-21ksoftirqd/009:35:000
129991420,1ptp4l401ktimersoftd/310:35:263
32488994134,4cyclictest41-21ksoftirqd/311:32:123
32488994134,4cyclictest41-21ksoftirqd/308:15:583
32487994135,4cyclictest33-21ksoftirqd/211:25:292
32487994134,4cyclictest33-21ksoftirqd/212:29:342
32487994134,4cyclictest33-21ksoftirqd/210:20:012
32487994134,4cyclictest33-21ksoftirqd/209:25:502
32487994134,4cyclictest33-21ksoftirqd/208:19:592
32486994135,4cyclictest25-21ksoftirqd/111:15:241
3248699410,3cyclictest121rcu_preempt11:00:341
32485994134,4cyclictest9-21ksoftirqd/009:06:280
129991410,1ptp4l401ktimersoftd/310:45:243
32488994033,4cyclictest41-21ksoftirqd/311:57:083
32487994035,3cyclictest33-21ksoftirqd/207:24:502
32487994034,4cyclictest33-21ksoftirqd/207:31:502
32487994034,3cyclictest33-21ksoftirqd/211:14:192
32487994034,3cyclictest33-21ksoftirqd/211:02:502
32487994033,4cyclictest33-21ksoftirqd/209:42:442
32487994033,4cyclictest33-21ksoftirqd/209:42:442
32487994033,4cyclictest33-21ksoftirqd/207:35:302
32486994035,3cyclictest25-21ksoftirqd/108:55:281
32486994034,3cyclictest25-21ksoftirqd/112:35:001
32486994033,4cyclictest25-21ksoftirqd/111:41:281
32486994033,4cyclictest25-21ksoftirqd/109:40:131
32486994033,4cyclictest25-21ksoftirqd/109:40:131
32486994033,4cyclictest25-21ksoftirqd/107:17:511
32485994033,4cyclictest9-21ksoftirqd/012:35:130
32485994033,4cyclictest9-21ksoftirqd/012:35:130
32485994033,4cyclictest9-21ksoftirqd/012:30:260
32485994033,4cyclictest9-21ksoftirqd/010:57:530
129991400,1ptp4l401ktimersoftd/309:05:313
32488993934,3cyclictest41-21ksoftirqd/311:05:003
32488993933,3cyclictest41-21ksoftirqd/311:25:543
32488993932,4cyclictest41-21ksoftirqd/311:49:343
32488993932,4cyclictest41-21ksoftirqd/308:35:533
32487993933,3cyclictest33-21ksoftirqd/212:15:042
32487993932,4cyclictest33-21ksoftirqd/212:34:412
32487993932,4cyclictest33-21ksoftirqd/211:23:292
32487993932,4cyclictest33-21ksoftirqd/210:26:242
32487993932,4cyclictest33-21ksoftirqd/209:53:442
32487993932,4cyclictest33-21ksoftirqd/209:17:162
32487993931,5cyclictest33-21ksoftirqd/208:04:532
32487993931,4cyclictest33-21ksoftirqd/210:40:002
32486993933,3cyclictest25-21ksoftirqd/110:47:151
32486993933,3cyclictest25-21ksoftirqd/110:35:001
32486993932,4cyclictest25-21ksoftirqd/108:41:061
32486993932,4cyclictest25-21ksoftirqd/108:35:101
32486993932,4cyclictest25-21ksoftirqd/107:29:521
32486993931,5cyclictest25-21ksoftirqd/108:53:581
32485993934,3cyclictest9-21ksoftirqd/008:30:160
32485993932,4cyclictest9-21ksoftirqd/012:05:080
32485993932,4cyclictest9-21ksoftirqd/008:59:350
32485993932,4cyclictest9-21ksoftirqd/008:20:160
32485993932,4cyclictest9-21ksoftirqd/007:16:590
32485993931,5cyclictest9-21ksoftirqd/012:20:580
129991390,1ptp4l401ktimersoftd/311:50:153
32488993832,3cyclictest41-21ksoftirqd/309:50:373
32488993832,3cyclictest41-21ksoftirqd/308:47:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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