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2019-07-22 - 08:16

ARMv7 Processor rev 5 (v7l), Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 20 highest latencies:
System rack5slot7.osadl.org (updated Mon Jul 22, 2019 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2071224712223,98sleep00-21swapper20:56:000
2505223702224,95sleep00-21swapper20:56:230
305729916417,47cyclictest3205-21munin-run21:54:460
305729916415,54cyclictest26417-21ls00:36:280
305729916413,50cyclictest3561-21ssh23:30:140
305729916312,44cyclictest6323-21basename19:54:570
305729916215,56cyclictest27060-21munin-run21:29:470
305729916110,62cyclictest27203-21ssh21:30:050
305729916031,44cyclictest5996-21wc19:50:440
305729916013,58cyclictest6708-21wc22:04:540
305729916013,52cyclictest13496-21/usr/sbin/munin00:01:350
305729915937,40cyclictest26881-21sh23:03:230
305729915910,25cyclictest16101-21ssh22:31:220
305729915816,42cyclictest17345-21fw_conntrack22:35:350
30572991579,22cyclictest1643-21snmpd21:58:520
305729915715,50cyclictest11093-21ls23:51:390
305729915613,44cyclictest21759-21ssh21:14:060
305729915611,23cyclictest9109-21ntp_states23:46:150
305729915512,27cyclictest25426-21ssh22:59:440
305729915511,27cyclictest22665-21/usr/sbin/munin22:50:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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