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2021-09-27 - 06:55

Intel(R) Atom(TM) Processor E3950 @ 1.60GHz, Linux 4.19.182-rt74 (Profile)

Latency plot of system in rack #d, slot #7
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 -n -p90 -i200 -h400 -a0-2 -t3 -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 rackdslot7.osadl.org (updated Wed Mar 24, 2021 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15568622234178,48sleep20-21swapper/219:08:562
15569302223174,41sleep00-21swapper/019:09:460
15565922222184,31sleep30-21swapper/319:05:313
15568512218179,31sleep10-21swapper/119:08:461
159848221850,2sleep30-21swapper/320:00:023
181813421730,4sleep0155720990cyclictest00:25:140
181813421730,4sleep0155720990cyclictest00:25:140
173382521700,3sleep30-21swapper/322:45:043
156229321610,3sleep30-21swapper/319:15:053
156229321610,3sleep30-21swapper/319:15:053
17154022950,4sleep01715391-21irqstats22:20:130
16892442890,2sleep10-21swapper/121:50:051
16892442890,2sleep10-21swapper/121:50:041
17497182710,4sleep233-21ksoftirqd/223:04:552
17497182710,4sleep233-21ksoftirqd/223:04:552
16270642690,4sleep01627066-21gltestperf20:35:010
1557209906458,4cyclictest1778893-21grep23:40:030
1557209906458,4cyclictest1778893-21grep23:40:020
1557234906357,3cyclictest1760634-21grep23:15:122
17648242610,1sleep20-21swapper/223:20:132
1557234906156,3cyclictest1618087-21head20:20:202
155720990611,57cyclictest1796774-21if_enp3s000:00:100
1557234905954,3cyclictest1683684-21sed21:40:202
1557234905953,3cyclictest1571840-21sed19:25:122
1557209905954,3cyclictest1665184-21cpuspeed_turbos21:20:090
1557209905952,5cyclictest1825181-21cpuspeed_turbos00:35:090
155720990592,54cyclictest1587146-21entropy19:45:090
1557234905852,3cyclictest1656638-21grep21:10:062
1557234905852,3cyclictest1656638-21grep21:10:062
1557234905852,3cyclictest1578882-21cut19:35:072
1557209905853,3cyclictest1571405-21if_enp2s019:25:090
1557209905852,4cyclictest1695442-21tail21:55:160
1557209905852,4cyclictest1644447-21fschecks_time20:55:080
1557234905751,3cyclictest1767455-21uniq23:25:072
1557234905751,3cyclictest1673841-21ls21:30:112
1557234905751,3cyclictest1673841-21ls21:30:102
1557234905749,4cyclictest1640550-21cut20:50:092
1557209905750,4cyclictest1597338-21grep19:55:190
17566362560,2sleep30-21swapper/323:10:153
1557234905650,3cyclictest1738640-21unixbench_multi22:50:062
1557209905651,3cyclictest1659736-21unixbench-2d21:15:020
1557209905651,3cyclictest1659736-21unixbench-2d21:15:010
1557209905649,4cyclictest1643438-21grep20:55:020
1557234905549,3cyclictest1627950-21tune2fs20:35:072
1557234905549,3cyclictest1608954-21cut20:10:132
1557209905550,3cyclictest1677357-21cpuspeed_turbos21:35:070
1557209905548,4cyclictest1636188-21grep20:45:060
1557234905446,5cyclictest1697098-21cpuspeed_turbos22:00:042
1557234905348,3cyclictest1688927-21sed21:50:042
1557234905348,3cyclictest1688927-21sed21:50:032
1557234905347,3cyclictest1827959-21grep00:40:032
155723490531,49cyclictest1782113-21unixbench_singl23:40:212
1557209905348,3cyclictest1631231-21cut20:40:020
1557209905347,4cyclictest1768246-21tail23:25:110
1557209905347,3cyclictest1814919-21unixbench_singl00:20:190
17844642520,1sleep00-21swapper/023:45:090
1557234905246,3cyclictest1807336-21grep00:15:022
1557234905246,3cyclictest1807336-21grep00:15:012
1557234905244,5cyclictest1562768-21cpuspeed_turbos19:15:092
1557234905244,5cyclictest1562768-21cpuspeed_turbos19:15:082
1557234905243,5cyclictest1752694-21timerwakeupswit23:05:152
1557209905246,4cyclictest1583859-21ls19:40:130
17323232510,2sleep10-21swapper/122:40:151
1557234905146,3cyclictest1775752-21grep23:35:082
1557234905146,3cyclictest1775752-21grep23:35:072
1557234905146,3cyclictest1655730-21grep21:10:022
1557234905146,3cyclictest1603967-21tune2fs20:05:092
1557234905145,4cyclictest1756030-21grep23:10:112
1557234905143,5cyclictest1821790-21ls00:30:112
155723490513,43cyclictest1668563-21cstates21:25:042
1557234905132,17cyclictest1730716-21ls22:40:082
1557234905045,3cyclictest1796770-21uniq00:00:102
1557234905044,3cyclictest1635199-21latency_hist20:45:012
155723490504,42cyclictest1643955-21cstates20:55:042
1557234905043,4cyclictest1638549-21sed20:45:192
1557209905045,3cyclictest1622139-21grep20:25:190
1557209905045,3cyclictest1611835-21fschecks_time20:15:080
155720990500,47cyclictest1761606-21unixbench_singl23:15:200
155720990500,47cyclictest1705028-21head22:10:020
155720990500,47cyclictest1651402-21cstates21:05:010
1557234904944,3cyclictest1623970-21unixbench_multi20:30:062
155723490494,41cyclictest1680332-21gltestperf21:40:012
1557234904943,3cyclictest1688409-21wc21:50:012
1557234904942,4cyclictest1660875-21cpuspeed_turbos21:15:082
155723490491,45cyclictest1583148-21uniq19:40:092
1557209904944,3cyclictest1561584-21gltestperf19:15:030
1557209904944,3cyclictest1561584-21gltestperf19:15:020
1557234904844,2cyclictest1783116-21/usr/sbin/munin23:45:062
1557234904842,3cyclictest1773091-21sort23:30:132
1557234904842,3cyclictest1734321-21ls22:45:042
1557234904842,3cyclictest1592035-21find19:50:102
1557234904841,4cyclictest1718472-21cpuspeed_turbos22:25:092
1557234904841,4cyclictest1718472-21cpuspeed_turbos22:25:082
1557209904843,3cyclictest1763889-21cut23:20:100
1557209904843,3cyclictest1722946-21sort22:30:110
1557209904842,4cyclictest1735477-21ls22:45:110
1557209904842,3cyclictest1791644-21ls23:55:050
1557209904842,3cyclictest1709842-21grep22:15:050
155720990482,43cyclictest1674981-21cut21:30:170
155720990482,43cyclictest1674981-21cut21:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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