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2022-08-15 - 17:05

x86 Intel N455 @1660 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #3, slot #6
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 -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100, highest latencies:
System rack3slot6 (updated Mon Aug 15, 2022 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29914999175,10cyclictest14-21ksoftirqd/011:15:210
29914999014,68cyclictest0-21swapper/011:21:250
29914998867,13cyclictest14-21ksoftirqd/009:20:180
29914998666,13cyclictest14-21ksoftirqd/008:20:160
29914998365,12cyclictest14-21ksoftirqd/008:10:150
29914998263,11cyclictest14-21ksoftirqd/012:30:200
29914998262,10cyclictest14-21ksoftirqd/008:25:170
2823628235,34sleep10-21swapper/107:05:191
29914998054,13cyclictest0-21swapper/008:00:180
29914997960,11cyclictest14-21ksoftirqd/010:40:200
2969627921,48sleep00-21swapper/007:09:330
29919997726,12cyclictest26-21ksoftirqd/110:40:011
29919997726,12cyclictest26-21ksoftirqd/110:40:001
29914997755,10cyclictest14-21ksoftirqd/010:00:200
29914997731,39cyclictest272-21systemd-journal10:05:120
29919997630,23cyclictest26-21ksoftirqd/111:05:011
2991499767,60cyclictest8110-21apt-get07:40:200
29914997658,11cyclictest14-21ksoftirqd/009:50:190
29914997557,8cyclictest14-21ksoftirqd/009:55:190
29914997544,21cyclictest0-21swapper/010:55:190
29919997431,22cyclictest26-21ksoftirqd/109:25:001
29919997429,24cyclictest26-21ksoftirqd/112:25:011
29919997426,22cyclictest26-21ksoftirqd/109:30:001
29914997448,13cyclictest0-21swapper/009:15:210
306442730,5sleep1151rcu_preempt12:00:211
29919997317,33cyclictest26-21ksoftirqd/107:39:241
2991499736,62cyclictest0-21swapper/007:50:390
29914997349,18cyclictest14-21ksoftirqd/009:05:390
29919997239,12cyclictest26-21ksoftirqd/111:45:371
29914997224,19cyclictest29904-21cyclictest09:00:220
29919997139,9cyclictest13168-21apache211:27:401
29919997126,21cyclictest26-21ksoftirqd/110:25:001
29919997115,19cyclictest26-21ksoftirqd/110:00:391
2991499717,21cyclictest10701-21apt-get09:25:280
29919997033,12cyclictest26-21ksoftirqd/112:30:321
29919997028,22cyclictest26-21ksoftirqd/107:50:001
29919997027,23cyclictest26-21ksoftirqd/110:54:591
29919997025,23cyclictest26-21ksoftirqd/107:15:011
29914997040,21cyclictest14-21ksoftirqd/009:45:150
29914997014,51cyclictest0-21swapper/012:00:130
29919996942,9cyclictest29610-21/usr/sbin/munin08:45:191
29919996934,15cyclictest26-21ksoftirqd/109:20:001
29919996933,12cyclictest26-21ksoftirqd/107:21:151
29919996930,12cyclictest26-21ksoftirqd/109:45:321
29919996926,23cyclictest26-21ksoftirqd/112:30:001
29919996926,23cyclictest26-21ksoftirqd/108:40:001
29919996926,21cyclictest26-21ksoftirqd/108:30:381
29919996924,22cyclictest26-21ksoftirqd/110:10:011
2991499696,50cyclictest5741-21apt-get09:10:180
29914996941,15cyclictest14-21ksoftirqd/008:50:150
29914996936,19cyclictest0-21swapper/010:45:170
29914996936,18cyclictest0-21swapper/007:55:160
29919996835,11cyclictest26-21ksoftirqd/109:30:511
29919996825,23cyclictest26-21ksoftirqd/108:15:011
2991499689,53cyclictest36-21kcompactd008:30:240
29914996839,18cyclictest0-21swapper/011:30:150
29914996838,19cyclictest0-21swapper/008:35:190
29914996837,19cyclictest0-21swapper/007:45:180
29914996836,18cyclictest0-21swapper/010:30:210
29914996836,17cyclictest0-21swapper/011:05:220
29919996734,11cyclictest26-21ksoftirqd/111:20:391
29919996722,24cyclictest14573-21awk09:35:351
29914996738,16cyclictest0-21swapper/012:10:180
29914996738,16cyclictest0-21swapper/012:10:170
29914996736,20cyclictest0-21swapper/007:15:200
2991499672,11cyclictest3180-21cat12:15:190
29919996636,23cyclictest26-21ksoftirqd/107:50:541
29919996633,12cyclictest26-21ksoftirqd/112:15:351
29919996633,12cyclictest26-21ksoftirqd/108:20:451
29919996632,12cyclictest26-21ksoftirqd/109:00:381
29919996632,12cyclictest26-21ksoftirqd/107:40:271
29919996627,22cyclictest26-21ksoftirqd/111:37:291
29919996626,25cyclictest26-21ksoftirqd/108:42:441
29919996626,24cyclictest26-21ksoftirqd/111:18:351
29919996624,23cyclictest26-21ksoftirqd/112:00:001
29919996624,13cyclictest26-21ksoftirqd/109:00:011
29919996623,21cyclictest26-21ksoftirqd/111:10:231
29919996621,23cyclictest26-21ksoftirqd/108:05:001
29914996642,13cyclictest0-21swapper/010:25:180
29914996637,16cyclictest0-21swapper/010:15:180
29914996636,17cyclictest14-21ksoftirqd/008:05:170
29914996635,17cyclictest14-21ksoftirqd/011:00:220
29914996634,19cyclictest0-21swapper/008:55:140
2991499663,12cyclictest15521-21turbostat09:40:000
29919996524,23cyclictest26-21ksoftirqd/108:19:591
29919996523,22cyclictest26-21ksoftirqd/112:10:001
29914996537,17cyclictest0-21swapper/011:25:180
29914996536,17cyclictest14-21ksoftirqd/012:25:210
29914996535,17cyclictest0-21swapper/007:35:230
29914996534,23cyclictest14-21ksoftirqd/011:40:180
29914996534,19cyclictest14-21ksoftirqd/010:10:200
29914996534,17cyclictest0-21swapper/012:20:180
29919996431,11cyclictest26-21ksoftirqd/110:40:391
29919996424,25cyclictest26-21ksoftirqd/112:11:181
29919996424,25cyclictest26-21ksoftirqd/112:11:171
29919996421,22cyclictest26-21ksoftirqd/111:55:001
29919996421,20cyclictest26-21ksoftirqd/109:05:051
29919996420,23cyclictest26-21ksoftirqd/111:05:281
29919996419,23cyclictest26-21ksoftirqd/110:30:241
29914996442,12cyclictest14-21ksoftirqd/011:10:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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