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2024-07-27 - 07:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 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 rackcslot4s.osadl.org (updated Sat Jul 27, 2024 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28279993411,7cyclictest15324-21fschecks_count21:45:133
2827999310,3cyclictest21360-21turbostat.cron22:05:003
28275992816,8cyclictest24423-21apt-get20:35:102
2826699243,14cyclictest24746-21apt-get20:35:150
28266992410,4cyclictest9-21ksoftirqd/019:35:140
2827999231,3cyclictest29828-21munin-node19:15:013
28279992216,4cyclictest5599-21http22:55:003
28279992216,3cyclictest22178-21python323:45:013
28279992215,4cyclictest32315-21munin-run21:00:013
28275992218,2cyclictest7059-21ls19:40:212
28275992213,7cyclictest4410-21tune2fs22:50:122
28270992214,6cyclictest26161-21df23:55:141
28266992213,6cyclictest5771-21date22:55:010
2827999212,13cyclictest22419-21apt-get20:30:133
28279992116,3cyclictest25116-21ntp_offset23:50:183
28279992113,6cyclictest9879-21awk21:25:333
28279992113,6cyclictest30138-21awk20:50:203
28279992113,6cyclictest16896-21snmp_o5powerctl23:25:233
2827999210,5cyclictest10811-21turbostat23:10:003
2827999210,19cyclictest24160-21apt-config20:35:023
2827599212,13cyclictest32464-21apt-get00:15:112
28275992113,6cyclictest7176-21sed00:35:172
28275992113,6cyclictest32714-21ls21:00:132
28275992112,6cyclictest2949-21grep00:20:272
28275992112,6cyclictest21996-21grep23:40:242
2827599211,14cyclictest20805-21apt-get20:25:122
2827099212,14cyclictest14329-21apt-get20:05:101
28270992115,4cyclictest19717-21cron22:00:001
28270992114,5cyclictest424-21fw_packets21:00:171
28270992113,6cyclictest5747-21sed22:55:011
28270992113,6cyclictest23357-21memory23:45:151
28270992112,7cyclictest1294-21ntpq22:40:201
28266992116,3cyclictest21722-21sendmail_mailqu20:25:210
28266992115,3cyclictest1547-21latency_hist21:05:000
28266992114,5cyclictest27888-21forks20:45:140
28266992114,5cyclictest13930-21awk23:15:260
2826699211,14cyclictest11036-21apt-get23:10:110
2826699210,19cyclictest10916-21sed21:30:270
2827999201,3cyclictest3804-21apt-config22:50:013
28279992013,5cyclictest4315-21wc21:10:153
28279992013,5cyclictest32695-21tune2fs00:15:133
28279992013,5cyclictest31510-21snmp_o5powerctl19:15:243
28279992013,5cyclictest30330-21sed00:05:243
28279992012,6cyclictest7006-21basename00:35:163
28279992012,5cyclictest21526-21nfs4_client20:25:193
2827999200,7cyclictest17344-21lsb_release20:15:003
2827999200,3cyclictest6815-21lsb_release21:20:003
2827999200,16cyclictest1542-21apt-get21:05:053
2827999200,16cyclictest1542-21apt-get21:05:053
2827999200,14cyclictest4543-21cat19:35:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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