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2022-01-22 - 15:27

Intel(R) Celeron(R) CPU G3900 @ 2.80GHz, Linux 5.10.35-rt39 (Profile)

Latency plot of system in rack #c, slot #5
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 50 highest latencies:
System rackcslot5.osadl.org (updated Sat Jan 22, 2022 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1484999263,19cyclictest30104-21cat10:30:310
1484999260,25cyclictest20067-21meminfo07:20:250
1485099250,24cyclictest8914-21meminfo11:00:221
1484999250,24cyclictest7727-21meminfo12:20:210
1484999250,24cyclictest30350-21meminfo11:55:230
1484999240,23cyclictest9329-21meminfo08:15:250
1484999240,17cyclictest0-21swapper/010:50:230
1485099230,22cyclictest27903-21meminfo07:40:261
1484999231,21cyclictest20335-21hwlatdetect11:30:220
1484999230,22cyclictest5985-21if_ecat109:30:210
1484999230,22cyclictest18008-21/usr/sbin/munin11:25:280
1484999230,22cyclictest0-21swapper/012:15:140
1484999230,22cyclictest0-21swapper/009:55:190
1485099220,21cyclictest24919-21meminfo08:55:251
1484999223,18cyclictest8154-21missed_timers09:35:250
1484999222,15cyclictest31655-21apt-get12:00:160
1484999221,20cyclictest8260-21apt-get11:00:170
1484999220,21cyclictest26796-21kernelversion09:00:200
1484999220,21cyclictest16199-21taskset08:34:040
1484999220,21cyclictest0-21swapper/008:20:220
1484999220,20cyclictest0-21swapper/009:28:520
1484999220,18cyclictest0-21swapper/011:50:190
1484999220,15cyclictest0-21swapper/008:25:190
1485099210,21cyclictest13992-21meminfo09:50:251
1484999213,17cyclictest14536-21if_ecat111:15:200
1484999212,18cyclictest4616-21munin-run08:05:010
1484999211,19cyclictest9377-21sed12:25:210
1484999210,21cyclictest1874-21meminfo12:05:250
1484999210,20cyclictest5443-21meminfo08:05:280
1484999210,20cyclictest30881-21apt-get10:35:180
1484999210,20cyclictest28405-21fschecks_time09:05:220
1484999210,20cyclictest186572sleep010:01:120
1484999210,20cyclictest0-21swapper/012:37:410
1484999210,19cyclictest0-21swapper/008:35:190
1485099200,19cyclictest25939-21meminfo07:35:231
1485099200,19cyclictest1079-21meminfo10:40:231
1484999205,14cyclictest2321-21runrttasks09:16:120
1484999203,16cyclictest0-21swapper/011:05:180
1484999202,17cyclictest7534-21ntp_states08:10:280
1484999201,18cyclictest19189-21/usr/sbin/munin10:05:240
1484999200,19cyclictest0-21swapper/012:10:530
1484999200,18cyclictest13335-21apt-get09:50:170
1485099191,6cyclictest29940-21diskmemload11:37:221
1485099190,19cyclictest22975-21meminfo08:50:231
1485099190,18cyclictest9676-21meminfo12:25:231
1485099190,18cyclictest6193-21meminfo09:30:231
1485099190,18cyclictest30776-21meminfo09:10:251
1484999194,14cyclictest164662sleep007:13:090
1484999194,14cyclictest164662sleep007:13:080
1484999191,14cyclictest23146-21grep11:35:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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