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2021-06-17 - 20:07

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #2
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 rackdslot2.osadl.org (updated Thu Jun 10, 2021 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
443721790,8sleep31369499cyclictest10:15:293
3148721650,3sleep01369199cyclictest10:50:160
137821580,9sleep01369199cyclictest12:15:030
128932129108,9sleep30-21swapper/307:06:333
1268911010,2ptp4l8940-21ls08:20:393
13693998370,7cyclictest33-21ksoftirqd/209:25:132
116582804,12sleep10-21swapper/107:05:191
1369199770,4cyclictest121rcu_preempt12:25:120
13694997131,10cyclictest41-21ksoftirqd/308:35:063
13694997036,7cyclictest41-21ksoftirqd/309:05:303
13694997035,7cyclictest41-21ksoftirqd/312:35:043
13694997034,8cyclictest41-21ksoftirqd/310:10:113
13694996934,8cyclictest41-21ksoftirqd/310:25:043
13694996934,7cyclictest41-21ksoftirqd/308:25:173
13694996933,8cyclictest41-21ksoftirqd/310:35:103
13694996835,4cyclictest41-21ksoftirqd/307:25:173
13694996834,7cyclictest41-21ksoftirqd/308:10:283
13694996833,7cyclictest41-21ksoftirqd/308:30:153
13694996833,7cyclictest41-21ksoftirqd/308:30:143
13694996832,5cyclictest41-21ksoftirqd/309:30:283
13694996733,5cyclictest41-21ksoftirqd/310:50:093
13694996732,8cyclictest41-21ksoftirqd/311:45:033
13694996732,8cyclictest41-21ksoftirqd/311:25:013
13694996732,6cyclictest41-21ksoftirqd/308:15:283
13694996730,5cyclictest41-21ksoftirqd/311:50:033
13694996726,5cyclictest41-21ksoftirqd/309:55:083
13694996633,4cyclictest41-21ksoftirqd/310:20:023
13694996632,7cyclictest41-21ksoftirqd/311:40:113
13694996631,7cyclictest41-21ksoftirqd/307:55:123
13694996631,5cyclictest41-21ksoftirqd/312:25:093
13694996533,4cyclictest41-21ksoftirqd/309:35:013
13694996532,10cyclictest41-21ksoftirqd/308:40:093
13694996531,7cyclictest41-21ksoftirqd/312:00:313
13694996531,10cyclictest41-21ksoftirqd/311:05:093
13694996529,10cyclictest41-21ksoftirqd/308:55:013
13691996554,5cyclictest9-21ksoftirqd/011:10:140
13694996431,5cyclictest41-21ksoftirqd/312:30:133
13694996430,10cyclictest41-21ksoftirqd/312:10:273
13694996429,5cyclictest41-21ksoftirqd/310:45:013
13694996428,9cyclictest41-21ksoftirqd/309:00:123
13694996428,7cyclictest41-21ksoftirqd/307:45:013
13693996452,6cyclictest33-21ksoftirqd/207:25:142
13693996447,10cyclictest33-21ksoftirqd/211:15:132
13694996332,4cyclictest41-21ksoftirqd/309:45:093
13694996332,4cyclictest41-21ksoftirqd/309:45:093
13694996332,10cyclictest41-21ksoftirqd/307:45:013
13694996330,5cyclictest41-21ksoftirqd/311:30:063
13694996330,11cyclictest41-21ksoftirqd/307:50:423
13694996330,10cyclictest41-21ksoftirqd/309:15:023
13694996329,7cyclictest41-21ksoftirqd/308:45:233
13694996329,5cyclictest41-21ksoftirqd/309:10:233
13694996328,5cyclictest41-21ksoftirqd/309:40:303
13694996230,10cyclictest41-21ksoftirqd/311:35:023
13694996228,7cyclictest41-21ksoftirqd/307:30:153
13694996228,7cyclictest41-21ksoftirqd/307:15:103
13694996228,5cyclictest41-21ksoftirqd/310:55:193
13694996228,10cyclictest41-21ksoftirqd/307:20:013
13694996128,10cyclictest41-21ksoftirqd/310:05:343
13694996127,8cyclictest41-21ksoftirqd/310:00:123
13694996127,5cyclictest41-21ksoftirqd/312:20:073
13694996126,8cyclictest41-21ksoftirqd/309:50:073
13694996030,11cyclictest41-21ksoftirqd/310:30:093
13694996030,11cyclictest41-21ksoftirqd/307:35:113
13694996027,7cyclictest41-21ksoftirqd/311:15:153
13694996027,5cyclictest41-21ksoftirqd/311:55:033
13694996027,4cyclictest41-21ksoftirqd/312:05:113
13694996026,5cyclictest41-21ksoftirqd/311:10:263
13694996026,5cyclictest41-21ksoftirqd/310:40:103
1369499595,9cyclictest41-21ksoftirqd/308:55:043
13694995929,11cyclictest41-21ksoftirqd/307:15:013
13694995929,11cyclictest41-21ksoftirqd/307:15:003
1299125938,10sleep00-21swapper/007:07:480
13694995829,10cyclictest41-21ksoftirqd/312:15:023
1369499577,10cyclictest41-21ksoftirqd/308:05:083
1369499575,7cyclictest41-21ksoftirqd/309:20:013
1369499573,8cyclictest41-21ksoftirqd/311:00:193
1369499573,8cyclictest41-21ksoftirqd/311:00:193
114862570,2sleep00-21swapper/009:45:230
114862570,2sleep00-21swapper/009:45:220
1369499556,10cyclictest41-21ksoftirqd/308:00:113
1369499553,7cyclictest41-21ksoftirqd/311:25:083
13694995525,11cyclictest41-21ksoftirqd/309:25:103
217882540,2sleep221792-21sed10:00:032
13692995243,5cyclictest25-21ksoftirqd/110:10:151
13693994731,8cyclictest33-21ksoftirqd/211:10:142
1369399462,12cyclictest33-21ksoftirqd/211:40:132
13691994641,3cyclictest9-21ksoftirqd/008:30:150
13691994641,3cyclictest9-21ksoftirqd/008:30:150
13691994537,4cyclictest9-21ksoftirqd/009:25:140
1289924512,20sleep20-21swapper/207:06:372
13691994436,5cyclictest9-21ksoftirqd/007:10:040
13691994436,5cyclictest9-21ksoftirqd/007:10:030
13691994336,4cyclictest9-21ksoftirqd/008:05:050
13691994336,4cyclictest9-21ksoftirqd/008:00:150
1369199433,4cyclictest9-21ksoftirqd/010:45:140
229722420,9sleep01369199cyclictest11:20:140
13693994235,4cyclictest33-21ksoftirqd/208:15:172
13693994225,5cyclictest33-21ksoftirqd/209:55:112
13691994236,4cyclictest9-21ksoftirqd/008:25:140
3098924134,3sleep233-21ksoftirqd/210:50:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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