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2023-06-09 - 10:18

ARM Freescale i.MX6UL @528 MHz, 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 50 highest latencies:
System rack5slot7.osadl.org (updated Fri Jun 09, 2023 00:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8785243300,24sleep04783-1kworker/u3:018:20:540
92369910418,45cyclictest26539-21irqstats23:25:510
92369910315,46cyclictest17297-21apt-get21:20:080
92369910314,25cyclictest19571-21/usr/sbin/munin23:06:270
92369910311,43cyclictest22546-21sh21:35:320
92369910230,55cyclictest0-21swapper22:58:210
92369910217,45cyclictest5146-21irqstats22:20:560
92369910129,55cyclictest0-21swapper20:34:130
92369910117,44cyclictest21604-21fw_conntrack23:10:460
92369910117,24cyclictest13247-21users21:06:350
92369910116,64cyclictest29817-21irqstats23:35:550
92369910020,60cyclictest31870-21fw_conntrack20:25:520
92369910016,45cyclictest9275-21df20:55:270
92369910013,47cyclictest9536-21munin-run22:34:430
92369910010,67cyclictest14730-21ssh21:11:270
92369910010,25cyclictest29982-21ssh21:57:360
92369910010,24cyclictest7498-21ssh22:27:440
9236999914,48cyclictest19243-21ssh21:25:360
9236999912,66cyclictest31006-21apt-get23:40:060
9236999912,25cyclictest2334-21ssh23:51:110
9236999911,67cyclictest12193-21wc21:04:440
9236999817,60cyclictest14991-21fw_conntrack22:50:450
9236999816,21cyclictest10308-21ssh22:36:180
9236999815,63cyclictest27289-21irqstats20:00:350
9236999814,66cyclictest0-21swapper23:03:200
9236999812,65cyclictest5148-21ssh20:42:370
9236999812,47cyclictest12798-21grep18:40:190
9236999812,27cyclictest19987-21sshd19:20:190
9236999811,25cyclictest27198-21/usr/sbin/munin21:50:210
9236999810,68cyclictest24031-21grep21:40:180
923699979,67cyclictest27994-21ssh23:30:290
9236999732,48cyclictest0-21swapper21:17:010
9236999717,42cyclictest28944-21df20:10:210
9236999716,61cyclictest23164-21df23:15:320
9236999716,23cyclictest3568-21memory22:16:060
9236999712,26cyclictest22189-21grep21:34:480
9236999712,25cyclictest23430-21wget19:40:090
923699969,66cyclictest29077-21snmpd22:01:290
9236999616,41cyclictest25897-21df_inode21:45:420
9236999613,54cyclictest0-21swapper22:14:150
9236999611,23cyclictest32533-21sh22:05:440
9236999610,67cyclictest25371-21ssh23:21:290
9236999610,23cyclictest31367-21latency_hist20:24:460
9236999517,58cyclictest11605-21df22:40:330
9236999512,62cyclictest16170-21grep19:00:080
9236999443,33cyclictest13371-21if_err_eth022:45:490
9236999417,57cyclictest10245-21munin-node18:29:490
9236999416,57cyclictest573-21irqstats23:45:540
9236999412,62cyclictest3308-21users20:36:370
923699939,21cyclictest18016-21basename19:10:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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