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2022-06-27 - 17:13

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 50 highest latencies:
System rack7slot1.osadl.org (updated Mon Jun 27, 2022 12:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30442211552,58sleep10-21swapper/107:09:081
1848021120,1sleep324565-21stress10:03:283
1848021120,1sleep324565-21stress10:03:283
29194210451,46sleep20-21swapper/207:05:212
3040529569,21sleep30-21swapper/307:08:423
3018128660,21sleep00-21swapper/007:06:030
96812820,3sleep324564-21stress09:45:233
30629995111,28cyclictest0-21swapper/011:00:210
3062999495,33cyclictest0-21swapper/009:35:010
30629994910,25cyclictest0-21swapper/011:20:290
3063099489,28cyclictest0-21swapper/112:11:021
30629994814,19cyclictest0-21swapper/009:20:210
30629994814,19cyclictest0-21swapper/009:20:210
30629994813,25cyclictest0-21swapper/011:55:180
30629994811,18cyclictest0-21swapper/012:15:240
30629994811,18cyclictest0-21swapper/012:15:240
3062999473,33cyclictest24565-21stress09:45:420
3062999454,26cyclictest0-21swapper/010:00:270
3062999454,26cyclictest0-21swapper/010:00:270
30629994510,28cyclictest0-21swapper/012:00:140
3062999443,26cyclictest24565-21stress10:45:400
30629994411,19cyclictest0-21swapper/010:55:390
30629994411,17cyclictest0-21swapper/010:45:010
3062999435,21cyclictest0-21swapper/010:25:280
3062999433,28cyclictest24565-21stress11:45:320
30629994312,21cyclictest0-21swapper/011:40:300
30629994311,29cyclictest0-21swapper/011:05:190
30629994311,17cyclictest0-21swapper/012:05:280
3062999426,27cyclictest0-21swapper/009:00:240
3062999423,25cyclictest28829-21uniq08:10:170
3062999423,24cyclictest24568-21stress10:52:320
3062999423,24cyclictest24568-21stress10:05:470
3062999423,24cyclictest24568-21stress09:10:200
3062999423,22cyclictest25824-21/usr/sbin/munin11:25:230
3062999422,25cyclictest24568-21stress10:17:330
30629994211,23cyclictest0-21swapper/012:31:250
3062999418,25cyclictest24565-21stress09:25:180
3062999414,26cyclictest24565-21stress11:30:410
3062999414,20cyclictest24565-21stress10:25:010
3062999412,26cyclictest24565-21stress12:10:510
3062999412,23cyclictest24565-21stress09:15:170
30629994111,16cyclictest0-21swapper/010:10:190
327052400,1sleep024565-21stress10:31:260
3062999407,24cyclictest0-21swapper/008:00:050
3062999402,22cyclictest24568-21stress12:25:000
3062999402,22cyclictest24565-21stress11:35:320
3062999402,21cyclictest24565-21stress11:50:470
3062999398,22cyclictest0-21swapper/007:50:050
3062999395,27cyclictest0-21swapper/007:25:160
3062999393,32cyclictest25846-21apt-get08:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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