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2023-03-31 - 04:47

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 100, highest latencies:
System rack5slot7.osadl.org (updated Fri Mar 31, 2023 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8022224142220,142sleep00-21swapper18:27:290
81269916818,126cyclictest2683-21apt-get22:28:330
81269916617,107cyclictest22626-21apt-get23:28:270
81269916512,128cyclictest4799-21/usr/sbin/munin20:54:430
81269916319,116cyclictest14777-21apt-get21:23:280
81269916316,121cyclictest13674-21missed_timers21:19:340
81269916221,116cyclictest18526-21irqstats21:34:180
81269916218,119cyclictest27127-21df_inode22:03:580
81269916217,119cyclictest1480-21/usr/sbin/munin20:44:580
81269916017,117cyclictest30604-21apt-get20:33:350
81269916016,118cyclictest6034-21apt-get22:38:290
81269915918,115cyclictest9369-21apt-get22:48:300
81269915916,118cyclictest17857-21apt-get19:23:240
81269915912,123cyclictest4354-21/usr/sbin/munin22:34:540
81269915910,126cyclictest9812-21ssh21:08:290
8126991589,123cyclictest16438-21apt-get21:28:380
81269915819,115cyclictest11887-21irqstats21:14:150
81269915816,116cyclictest24096-21apt-get21:53:290
81269915815,119cyclictest16452-21memory19:13:580
81269915813,121cyclictest988-21/usr/sbin/munin22:24:460
81269915716,117cyclictest18746-21apt-get19:28:240
81269915618,114cyclictest14981-21ssh23:04:370
81269915618,111cyclictest27775-21df23:43:490
81269915618,101cyclictest31061-21users22:14:560
81269915616,117cyclictest7911-21ssh21:02:380
81269915616,117cyclictest16486-21kernelversion23:09:210
81269915613,102cyclictest8662-21memory21:04:240
81269915612,118cyclictest13322-21ssh22:59:360
81269915611,119cyclictest25066-21apt-get20:03:240
81269915611,105cyclictest3184-21ssh20:48:290
81269915611,102cyclictest32601-21grep20:38:570
81269915530,101cyclictest11030-21apt-get22:53:180
81269915513,118cyclictest28457-21apt-get22:08:340
81269915512,117cyclictest29140-21ssh23:48:200
81269915416,116cyclictest19773-21apt-get21:38:260
81269915415,117cyclictest21539-21memory23:24:280
81269915413,116cyclictest12320-21apt-get18:48:240
81269915330,99cyclictest29457-21latency_hist20:28:140
81269915318,113cyclictest32759-21users22:20:030
81269915317,99cyclictest19731-21df_inode23:19:020
81269915317,113cyclictest11722-21fw_conntrack18:43:550
81269915314,114cyclictest14906-21sshd18:59:230
81269915312,118cyclictest24242-21apt-get23:33:330
81269915312,118cyclictest21461-21/usr/sbin/munin21:44:570
81269915312,113cyclictest24169-21apt-get19:58:240
81269915310,120cyclictest30791-21/usr/sbin/munin23:53:520
81269915240,92cyclictest21152-21sendmail_mailqu19:39:100
81269915219,109cyclictest9144-21munin-node18:33:140
81269915215,113cyclictest26614-21ssh22:02:550
81269915211,118cyclictest17965-21df23:13:510
81269915140,91cyclictest26727-21sshd20:09:240
81269915115,113cyclictest9611-21/usr/sbin/munin18:34:340
81269915017,93cyclictest7704-21apt-get22:43:270
81269915014,113cyclictest25965-21basename23:38:440
81269914941,90cyclictest21523-21cut19:43:360
81269914920,104cyclictest16959-21apt-get19:18:240
81269914915,114cyclictest15031-21apt-get19:03:240
81269914915,113cyclictest24053-21munin-run19:58:080
81269914912,113cyclictest30491-21ssh20:33:110
81269914834,95cyclictest0-21swapper18:53:300
81269914831,92cyclictest28296-21ps20:19:180
81269914815,108cyclictest23111-21users19:49:220
81269914814,109cyclictest23103-21ssh21:48:240
81269914811,115cyclictest26910-21grep20:13:290
81269914610,114cyclictest11250-21grep18:39:200
81269914338,87cyclictest19940-21if_err_eth019:33:500
81269913913,106cyclictest24160-21lldpd19:11:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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