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2022-08-19 - 12:55

x86 Intel (undisclosed) @1600 MHz, Linux 4.9.20-rt16 (Profile)

Latency plot of system in rack #7, 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 -Sp99 -i200 -h400 -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 rack7slot1.osadl.org (updated Fri Aug 19, 2022 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5975211653,23sleep10-21swapper/119:06:571
5917211555,54sleep30-21swapper/319:06:223
6071211051,20sleep20-21swapper/219:08:022
592028459,20sleep00-21swapper/019:06:230
636199443,39cyclictest1089-21stress21:50:332
636199433,24cyclictest1091-21stress22:38:362
636199433,24cyclictest1091-21stress22:38:362
6361994315,26cyclictest0-21swapper/223:25:122
6363994211,28cyclictest0-21swapper/322:54:403
636199423,35cyclictest1091-21stress22:40:132
636199423,25cyclictest1942-21snmpd22:08:112
636199423,24cyclictest1089-21stress21:15:162
636199422,25cyclictest1091-21stress00:00:402
636199413,35cyclictest30189-21wget23:15:142
636199413,35cyclictest30189-21wget23:15:142
636199413,35cyclictest1091-21stress23:45:402
6359994118,16cyclictest0-21swapper/020:40:520
636199403,33cyclictest0-21swapper/223:21:222
636199403,29cyclictest1089-21stress00:35:382
636199403,28cyclictest7576-21ps21:20:382
636199403,23cyclictest1091-21stress00:25:232
636199402,28cyclictest1091-21stress22:25:332
636199402,23cyclictest1091-21stress21:45:542
6361994017,21cyclictest0-21swapper/222:30:292
6361994016,22cyclictest0-21swapper/200:20:122
6361994016,22cyclictest0-21swapper/200:20:122
6361994014,23cyclictest0-21swapper/222:55:272
6359994015,22cyclictest0-21swapper/021:22:560
636199393,32cyclictest12400-21apt-get19:20:142
636199393,24cyclictest16251-21cpu21:40:172
636199393,24cyclictest16251-21cpu21:40:172
636199393,22cyclictest25725-21proc_pri00:10:342
636199392,25cyclictest1089-21stress22:50:332
636199392,23cyclictest1089-21stress22:20:012
636199392,22cyclictest1091-21stress21:35:362
6361993917,20cyclictest0-21swapper/223:05:312
6361993915,22cyclictest0-21swapper/221:30:312
6361993915,22cyclictest0-21swapper/221:30:312
6361993915,22cyclictest0-21swapper/200:30:272
6361993914,23cyclictest0-21swapper/223:00:192
6359993915,22cyclictest0-21swapper/022:19:520
6359993915,22cyclictest0-21swapper/021:34:170
6359993915,22cyclictest0-21swapper/021:34:170
6359993915,21cyclictest0-21swapper/022:32:060
6359993915,17cyclictest0-21swapper/020:50:170
6359993913,20cyclictest0-21swapper/020:55:240
6359993913,20cyclictest0-21swapper/020:36:570
215542395,13sleep00-21swapper/019:37:040
149752390,1sleep01089-21stress22:43:380
6363993811,25cyclictest0-21swapper/322:46:183
636199387,23cyclictest0-21swapper/220:10:292
636199383,32cyclictest31345-21/usr/sbin/munin21:05:112
636199383,32cyclictest18336-21ntpq19:30:222
636199383,32cyclictest1091-21stress22:14:432
636199383,32cyclictest1091-21stress00:15:372
636199383,32cyclictest1089-21stress22:45:152
6361993817,19cyclictest0-21swapper/223:55:322
6361993815,21cyclictest0-21swapper/221:10:162
6361993814,21cyclictest0-21swapper/223:55:012
6361993814,21cyclictest0-21swapper/223:55:012
6359993816,15cyclictest0-21swapper/019:53:260
6359993815,20cyclictest0-21swapper/000:27:280
6359993815,16cyclictest0-21swapper/019:55:380
6359993814,18cyclictest0-21swapper/020:10:330
6359993812,19cyclictest0-21swapper/019:40:260
636399377,27cyclictest0-21swapper/300:06:563
6363993714,21cyclictest0-21swapper/321:26:293
6363993714,21cyclictest0-21swapper/321:26:293
636199373,30cyclictest19120-21apt-get20:40:142
636199373,30cyclictest11787-21apt-get20:25:142
636199373,21cyclictest1089-21stress00:05:452
636199372,33cyclictest1089-21stress22:00:312
636199372,33cyclictest1089-21stress22:00:312
636199372,32cyclictest9891-21/usr/sbin/munin19:15:162
636199372,32cyclictest1296-21fschecks_time22:15:202
6361993714,20cyclictest0-21swapper/223:35:152
636099377,27cyclictest0-21swapper/121:40:201
636099377,27cyclictest0-21swapper/121:40:191
6359993716,15cyclictest0-21swapper/021:00:470
6359993716,15cyclictest0-21swapper/021:00:470
6359993716,15cyclictest0-21swapper/020:00:380
6359993715,19cyclictest0-21swapper/022:08:500
6359993712,22cyclictest0-21swapper/000:00:040
144632375,13sleep00-21swapper/019:24:410
12222375,11sleep30-21swapper/320:01:093
89532365,13sleep30-21swapper/320:19:173
6363993614,19cyclictest0-21swapper/321:20:233
636199365,20cyclictest0-21swapper/220:00:142
636199363,30cyclictest23430-21runrttasks21:55:122
636199363,30cyclictest23430-21runrttasks21:55:112
636199363,30cyclictest21546-21/usr/sbin/munin20:45:222
636199363,30cyclictest0-21swapper/220:20:202
636199362,31cyclictest19699-21/usr/sbin/munin19:35:252
636199362,31cyclictest1091-21stress23:35:012
6361993615,19cyclictest0-21swapper/223:10:202
635999369,24cyclictest0-21swapper/022:45:560
6359993616,18cyclictest0-21swapper/023:25:350
6359993615,18cyclictest0-21swapper/023:43:180
6359993614,20cyclictest0-21swapper/023:11:480
6359993614,20cyclictest0-21swapper/021:55:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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