You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-04-01 - 15:10

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

Latency plot of system in rack #d, slot #1
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 rackdslot1.osadl.org (updated Sat Apr 01, 2023 12:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1748921630,9sleep11485399cyclictest09:40:281
1176911620,16ptp4l0-21swapper/107:05:561
1176911550,16ptp4l0-21swapper/007:06:190
1176911070,14ptp4l0-21swapper/107:10:011
120091814,18phc2sys0-21swapper/207:08:342
120091744,57phc2sys0-21swapper/307:05:533
117691710,3ptp4l0-21swapper/310:25:383
271202670,4sleep2321ktimersoftd/211:10:242
117691670,4ptp4l11137-21apt-get08:15:181
117691620,21ptp4l0-21swapper/010:34:260
117691600,5ptp4l8729-21grep10:30:363
117691600,10ptp4l0-21swapper/312:34:483
90542580,2sleep20-21swapper/209:20:012
1485499586,13cyclictest15423-21sed09:35:322
117691580,2ptp4l0-21swapper/109:14:041
117691580,2ptp4l0-21swapper/012:25:330
117691580,2ptp4l0-21swapper/008:21:130
117691580,10ptp4l0-21swapper/310:16:263
117691570,9ptp4l0-21swapper/108:05:451
117691570,2ptp4l0-21swapper/208:00:342
117691570,2ptp4l0-21swapper/010:02:150
117691570,1ptp4l0-21swapper/007:13:050
117691560,9ptp4l0-21swapper/312:38:073
117691560,9ptp4l0-21swapper/312:03:443
117691560,2ptp4l0-21swapper/311:33:383
117691560,2ptp4l0-21swapper/212:12:122
117691560,2ptp4l0-21swapper/210:45:312
117691560,2ptp4l0-21swapper/208:32:002
117691560,2ptp4l0-21swapper/010:56:590
117691560,1ptp4l0-21swapper/309:40:313
117691560,1ptp4l0-21swapper/008:35:160
117691550,2ptp4l0-21swapper/311:45:253
117691550,1ptp4l0-21swapper/112:31:571
117691540,2ptp4l0-21swapper/307:24:353
117691540,2ptp4l0-21swapper/211:20:372
117691540,2ptp4l0-21swapper/210:30:212
117691540,2ptp4l0-21swapper/209:40:282
117691540,2ptp4l0-21swapper/207:55:342
117691540,2ptp4l0-21swapper/007:51:390
117691540,1ptp4l0-21swapper/308:23:343
117691540,12ptp4l0-21swapper/009:42:550
117691540,11ptp4l0-21swapper/312:12:323
100652540,2sleep20-21swapper/209:25:152
1485499535,11cyclictest22748-21cat08:40:212
1485499532,15cyclictest21284-21sed09:50:002
117691530,9ptp4l0-21swapper/110:50:071
117691530,4ptp4l18909-21users07:15:393
117691530,2ptp4l0-21swapper/210:01:282
117691530,2ptp4l0-21swapper/207:12:142
117691530,2ptp4l0-21swapper/107:21:211
117691530,1ptp4l0-21swapper/211:45:272
117691530,1ptp4l0-21swapper/211:35:282
117691530,10ptp4l0-21swapper/309:45:213
1485499522,14cyclictest18008-21latency_hist08:30:012
1485499522,13cyclictest20541-21sed07:20:302
117691520,2ptp4l0-21swapper/109:59:331
117691510,2ptp4l0-21swapper/311:22:403
117691510,2ptp4l0-21swapper/311:15:203
117691510,2ptp4l0-21swapper/212:05:542
117691510,2ptp4l0-21swapper/211:50:042
117691510,2ptp4l0-21swapper/210:23:322
117691510,2ptp4l0-21swapper/210:23:312
117691510,2ptp4l0-21swapper/110:18:501
117691510,2ptp4l0-21swapper/007:29:350
117691510,1ptp4l0-21swapper/311:25:253
117691510,1ptp4l0-21swapper/110:10:091
117691500,2ptp4l0-21swapper/312:15:283
117691500,2ptp4l0-21swapper/311:52:253
117691500,2ptp4l0-21swapper/208:47:302
117691500,2ptp4l0-21swapper/207:15:562
117691500,1ptp4l0-21swapper/210:25:432
117691500,14ptp4l6746-21switchtime10:25:420
117691500,11ptp4l0-21swapper/009:16:220
1485499492,20cyclictest29011-21hwlatdetect10:05:312
117691490,2ptp4l0-21swapper/312:20:443
117691490,2ptp4l0-21swapper/212:39:182
117691490,2ptp4l0-21swapper/212:30:272
117691490,2ptp4l0-21swapper/212:15:312
117691490,2ptp4l0-21swapper/209:00:442
117691490,2ptp4l0-21swapper/208:14:522
117691490,2ptp4l0-21swapper/011:39:400
117691490,1ptp4l0-21swapper/210:55:372
117691480,2ptp4l0-21swapper/309:06:563
117691480,2ptp4l0-21swapper/307:46:003
117691480,2ptp4l0-21swapper/307:45:593
117691480,2ptp4l0-21swapper/212:01:002
117691480,2ptp4l0-21swapper/211:31:452
117691480,2ptp4l0-21swapper/211:15:202
117691480,2ptp4l0-21swapper/211:08:472
117691480,2ptp4l0-21swapper/208:54:002
117691480,1ptp4l0-21swapper/312:26:053
117691480,1ptp4l0-21swapper/311:44:583
117691480,1ptp4l0-21swapper/311:44:573
117691480,1ptp4l0-21swapper/311:07:203
117691480,1ptp4l0-21swapper/309:50:373
117691480,1ptp4l0-21swapper/309:34:313
117691480,1ptp4l0-21swapper/308:55:403
117691480,1ptp4l0-21swapper/108:20:081
117691480,12ptp4l29812-21meminfo07:40:261
117691480,11ptp4l2484-21smartctl07:50:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional