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2023-03-26 - 11:01

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 376 highest latencies:
System rack5slot7.osadl.org (updated Sat Mar 25, 2023 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15438225370,12sleep012216-1kworker/u3:106:28:160
154869910831,60cyclictest0-21swapper10:53:050
154869910321,61cyclictest10512-21users11:55:130
154869910318,64cyclictest10805-21ntp_states08:44:590
154869910229,55cyclictest0-21swapper11:39:170
154869910218,22cyclictest3156-21df_inode11:34:190
154869910217,46cyclictest9722-21munin-run10:18:240
154869910118,63cyclictest32009-21munin-run09:48:260
154869910117,22cyclictest30742-21memory11:19:550
154869910018,64cyclictest13670-21irqstats10:29:340
154869910016,63cyclictest1557-21irqstats11:29:370
154869910014,65cyclictest29317-21ssh09:39:490
154869910014,49cyclictest3567-21ssh09:59:450
154869910014,48cyclictest25859-21ssh11:05:070
154869910013,28cyclictest7910-21ssh08:35:300
15486999929,61cyclictest0-21swapper08:55:490
15486999915,24cyclictest9888-21ssh10:18:490
15486999911,66cyclictest24432-21sed07:13:570
15486999911,48cyclictest12713-21rm10:26:220
15486999816,60cyclictest24128-21irqstats09:24:380
15486999815,20cyclictest17278-21fw_conntrack09:04:250
15486999813,45cyclictest25732-21/usr/sbin/munin09:29:260
15486999812,26cyclictest18576-21ssh10:44:030
15486999727,53cyclictest0-21swapper09:23:020
15486999726,53cyclictest0-21swapper09:01:320
15486999724,56cyclictest0-21swapper09:57:390
15486999724,56cyclictest0-21swapper07:59:170
15486999716,22cyclictest15568-21ntp_states10:35:000
15486999716,21cyclictest27490-21irqstats09:34:380
15486999715,57cyclictest21473-21ssh09:16:310
15486999713,66cyclictest28730-21df11:14:040
15486999713,23cyclictest22020-21/usr/sbin/munin10:54:120
15486999711,24cyclictest6448-21cstates11:44:020
15486999615,23cyclictest32185-21munin-run07:58:250
15486999614,48cyclictest0-21swapper07:28:450
15486999613,64cyclictest25055-21wc11:03:300
15486999611,27cyclictest5921-21ssh10:06:120
15486999610,47cyclictest18811-21ssh09:09:020
15486999519,57cyclictest7908-21apt11:48:410
15486999515,63cyclictest5592-21df_inode08:29:100
15486999515,51cyclictest0-21swapper10:10:420
15486999514,61cyclictest4796-21awk08:24:180
15486999432,46cyclictest0-21swapper09:51:590
15486999430,51cyclictest0-21swapper06:39:060
15486999421,55cyclictest0-21swapper07:53:250
15486999414,42cyclictest16385-21munin-run06:33:250
15486999414,23cyclictest9084-21memory08:39:450
15486999413,61cyclictest32124-21df11:24:040
15486999413,42cyclictest18154-21ssh10:43:110
1548699939,63cyclictest25826-21unixbench_singl07:19:310
1548699939,45cyclictest22233-21grep06:59:360
15486999314,21cyclictest12392-21ntp_states08:49:510
15486999311,61cyclictest4038-21fgrep08:19:250
15486999214,61cyclictest1630-21/usr/sbin/munin08:09:030
15486999116,35cyclictest27164-21fw_conntrack11:09:250
15486999014,57cyclictest23363-21cut07:08:490
15486999013,26cyclictest20576-21/usr/sbin/munin06:54:280
1548699899,44cyclictest28504-21unixbench_singl07:34:300
15486998911,59cyclictest758-21grep08:03:450
15486998911,28cyclictest17312-21/usr/sbin/munin06:34:290
15486998817,23cyclictest19064-21df_inode06:44:010
15486998715,24cyclictest29934-21irqstats07:44:090
15486998714,55cyclictest22658-21df_inode07:03:590
15486998632,36cyclictest0-21swapper07:23:510
15486998618,23cyclictest19970-21fw_conntrack06:49:040
15486998517,22cyclictest2807-21df_inode08:13:580
15486998510,26cyclictest29550-21sed07:43:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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