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2023-02-08 - 03:59

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 alll highest latencies:
System rack5slot7.osadl.org (updated Wed Feb 08, 2023 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19351223932165,174sleep00-21swapper18:27:140
197629910716,57cyclictest0-21swapper23:53:380
197629910620,44cyclictest27009-21irqstats19:06:290
197629910618,67cyclictest5498-21ntp_states20:06:380
197629910313,73cyclictest0-21swapper21:34:170
197629910216,24cyclictest19278-21munin-run21:00:390
197629910118,23cyclictest23053-21fw_conntrack21:11:370
197629910114,40cyclictest19870-21ssh22:40:400
197629910112,64cyclictest25015-21ssh21:17:180
197629910043,23cyclictest28629-21forks23:06:390
197629910032,27cyclictest0-21swapper22:15:110
197629910017,44cyclictest3814-21fw_conntrack21:51:450
197629910017,44cyclictest27823-21df_inode19:11:150
197629910017,23cyclictest20002-21apt-get22:41:040
197629910016,64cyclictest24946-21/usr/sbin/munin22:57:220
197629910016,45cyclictest31210-21df_inode21:36:270
197629910016,38cyclictest11217-21apt-get20:36:060
197629910016,22cyclictest27956-21df_inode21:26:340
197629910014,70cyclictest0-21swapper23:34:460
197629910014,67cyclictest9557-21/usr/sbin/munin20:32:150
197629910014,47cyclictest22125-21uname22:46:590
197629910013,64cyclictest9506-21tr23:47:080
19762999922,59cyclictest23644-21df_inode22:51:380
19762999918,44cyclictest7900-21ntp_states23:42:090
19762999918,44cyclictest13195-21df_inode20:41:340
19762999917,63cyclictest21519-21irqstats21:06:550
19762999916,23cyclictest13878-21memory22:22:040
19762999914,24cyclictest13674-21ssh00:00:460
19762999913,68cyclictest13000-21sh22:19:350
19762999913,65cyclictest15531-21/usr/sbin/munin22:26:580
19762999913,51cyclictest7205-21ssh22:01:560
19762999912,63cyclictest20433-21ssh21:02:520
19762999912,49cyclictest32332-21sshd23:17:240
19762999910,25cyclictest26079-21ssh21:21:130
19762999832,50cyclictest0-21swapper22:33:010
19762999819,23cyclictest2064-21df21:46:300
19762999818,22cyclictest16492-21fw_conntrack20:51:400
19762999817,61cyclictest25655-21munin-run19:00:390
19762999817,23cyclictest8804-21irqstats22:06:530
19762999816,21cyclictest3970-21users19:56:520
19762999730,49cyclictest0-21swapper21:59:280
19762999715,23cyclictest30841-21users23:12:310
19762999712,65cyclictest1710-21users23:22:250
1976299969,26cyclictest9094-21ntp_states20:26:380
19762999634,43cyclictest0-21swapper19:41:000
19762999620,57cyclictest2431-21apt-get23:26:040
19762999615,65cyclictest0-21swapper18:50:390
19762999615,21cyclictest5913-21df23:36:220
19762999612,45cyclictest27569-21ssh23:02:340
19762999612,39cyclictest15622-21ssh20:48:350
19762999539,39cyclictest22830-21timerandwakeup18:41:460
19762999522,54cyclictest0-21swapper19:36:030
19762999515,42cyclictest32583-21apt-get21:41:080
19762999510,67cyclictest21943-21grep18:37:060
19762999415,59cyclictest23955-21apt-get18:51:030
19762999414,62cyclictest6805-21apt-get20:16:010
19762999410,43cyclictest31938-21modprobe19:35:360
19762999340,37cyclictest29545-21cstates19:21:080
19762999312,61cyclictest28659-21df19:16:150
19762999310,25cyclictest6372-21ntp_kernel_pll_20:11:340
19762999310,25cyclictest31006-21unixbench_singl19:26:480
19762999230,43cyclictest2575-21sed19:51:150
19762999210,23cyclictest26220-21ntpdc19:01:400
19762999117,24cyclictest7716-21/usr/sbin/munin20:21:060
19762999019,47cyclictest20660-21/usr/sbin/munin18:35:410
19762998916,25cyclictest1825-21memory19:46:350
19762998819,33cyclictest4331-21df20:01:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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