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2023-01-28 - 08:35

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

Latency plot of system in rack #d, slot #3
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 rackdslot3.osadl.org (updated Sat Jan 28, 2023 00:46:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1759825500,5sleep30-21swapper/319:05:133
576981280,101rtkit-daemon25578-21apache219:06:281
1949128968,9sleep20-21swapper/219:08:482
125322880,2sleep10-21swapper/121:10:191
825591800,1ptp4l401ktimersoftd/321:50:263
19873997725,12cyclictest33-21ksoftirqd/221:25:162
264032750,5sleep126407-21timerwakeupswit19:20:311
264032750,5sleep126407-21timerwakeupswit19:20:311
19872997221,11cyclictest25-21ksoftirqd/100:15:281
825591690,2ptp4l401ktimersoftd/320:00:173
19872996819,7cyclictest25-21ksoftirqd/120:10:011
825591670,1ptp4l401ktimersoftd/300:29:273
19873996529,6cyclictest33-21ksoftirqd/219:50:252
298592630,9sleep21987399cyclictest00:04:432
19873996328,5cyclictest33-21ksoftirqd/221:20:202
19872996349,4cyclictest25-21ksoftirqd/122:15:001
1987399627,7cyclictest33-21ksoftirqd/220:30:002
19873996254,4cyclictest33-21ksoftirqd/219:20:092
19873996254,4cyclictest33-21ksoftirqd/219:20:092
1987399622,8cyclictest321ktimersoftd/220:35:132
19873996226,9cyclictest33-21ksoftirqd/223:20:262
1987399621,8cyclictest321ktimersoftd/222:30:312
1987299625,4cyclictest25-21ksoftirqd/123:15:001
19872996218,10cyclictest25-21ksoftirqd/121:55:111
1987399612,8cyclictest321ktimersoftd/222:15:002
19873996128,10cyclictest33-21ksoftirqd/219:15:162
19873996128,10cyclictest33-21ksoftirqd/219:15:162
19873996127,8cyclictest33-21ksoftirqd/220:05:312
19873996127,4cyclictest33-21ksoftirqd/222:08:422
19872996154,4cyclictest25-21ksoftirqd/122:35:131
19872996141,4cyclictest25-21ksoftirqd/122:20:201
1987399603,8cyclictest321ktimersoftd/221:40:172
1987399602,8cyclictest321ktimersoftd/222:45:002
19873996026,9cyclictest33-21ksoftirqd/220:20:292
19873996026,10cyclictest33-21ksoftirqd/219:10:152
1987399600,8cyclictest321ktimersoftd/222:20:002
19872996053,4cyclictest25-21ksoftirqd/121:00:151
19872996045,4cyclictest25-21ksoftirqd/123:45:261
19872996045,4cyclictest25-21ksoftirqd/123:45:251
19872996017,9cyclictest25-21ksoftirqd/119:40:131
193362600,7sleep31987499cyclictest21:25:183
1987399597,9cyclictest33-21ksoftirqd/223:29:592
1987399596,9cyclictest33-21ksoftirqd/219:40:202
1987399596,9cyclictest33-21ksoftirqd/200:25:242
1987399593,9cyclictest321ktimersoftd/223:45:322
1987399593,9cyclictest321ktimersoftd/223:45:322
19873995926,11cyclictest33-21ksoftirqd/200:15:322
1987399591,9cyclictest321ktimersoftd/220:15:302
1987399591,8cyclictest321ktimersoftd/223:10:312
1987299597,4cyclictest25-21ksoftirqd/120:20:121
19872995941,4cyclictest25-21ksoftirqd/122:40:341
19872995938,3cyclictest25-21ksoftirqd/100:30:111
19872995913,5cyclictest25-21ksoftirqd/122:16:371
1987399589,7cyclictest33-21ksoftirqd/200:35:012
1987399587,8cyclictest33-21ksoftirqd/223:50:142
1987399587,8cyclictest33-21ksoftirqd/222:50:222
19873995850,4cyclictest33-21ksoftirqd/223:05:052
1987399584,9cyclictest33-21ksoftirqd/223:35:322
1987399584,11cyclictest33-21ksoftirqd/223:30:152
1987399581,8cyclictest321ktimersoftd/220:50:202
1987399581,8cyclictest321ktimersoftd/220:50:202
1987399581,8cyclictest321ktimersoftd/220:40:182
1987399580,8cyclictest321ktimersoftd/223:00:022
19872995851,4cyclictest25-21ksoftirqd/100:00:061
19872995846,8cyclictest25-21ksoftirqd/119:45:291
19872995813,8cyclictest25-21ksoftirqd/100:11:421
19872995812,9cyclictest25-21ksoftirqd/123:35:161
1987399577,8cyclictest18884-21iwlist23:40:202
1987399577,6cyclictest8303-21sed21:00:282
1987399577,6cyclictest33-21ksoftirqd/222:00:282
1987399577,6cyclictest33-21ksoftirqd/220:00:132
1987399576,9cyclictest33-21ksoftirqd/220:45:262
1987399576,7cyclictest33-21ksoftirqd/222:35:272
1987399573,9cyclictest321ktimersoftd/222:20:162
1987399573,7cyclictest321ktimersoftd/200:35:282
1987399570,9cyclictest321ktimersoftd/200:20:312
1987299573,8cyclictest25-21ksoftirqd/120:39:591
1987399567,9cyclictest33-21ksoftirqd/220:10:312
1987399566,9cyclictest33-21ksoftirqd/221:30:172
1987399566,8cyclictest33-21ksoftirqd/200:10:012
1987399566,7cyclictest33-21ksoftirqd/223:15:282
19873995625,9cyclictest33-21ksoftirqd/223:59:072
19873995624,9cyclictest33-21ksoftirqd/221:53:022
19873995624,10cyclictest33-21ksoftirqd/220:55:142
1987399561,8cyclictest321ktimersoftd/223:00:132
1987399561,8cyclictest321ktimersoftd/221:10:322
1987399560,8cyclictest321ktimersoftd/221:15:222
1987399560,8cyclictest321ktimersoftd/219:45:232
1987399560,7cyclictest321ktimersoftd/221:05:232
19872995640,4cyclictest25-21ksoftirqd/121:54:091
19872995621,9cyclictest25-21ksoftirqd/121:00:001
1987399557,7cyclictest25921-21fschecks_count20:30:152
1987399556,6cyclictest33-21ksoftirqd/222:45:132
1987399556,6cyclictest33-21ksoftirqd/221:55:192
1987399555,6cyclictest33-21ksoftirqd/200:10:242
19872995548,4cyclictest25-21ksoftirqd/100:25:001
19872995547,4cyclictest25-21ksoftirqd/123:20:001
1987299552,4cyclictest121rcu_preempt19:40:001
1987299552,3cyclictest121rcu_preempt23:55:001
19872995517,8cyclictest25-21ksoftirqd/119:55:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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