Zabconf RHEL Tuning
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Transcript of Zabconf RHEL Tuning
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RHEL Performance Tuning:
Using Zabbix to identify problems
Andrew Nelson
Consultant, Red Hat
September, 21, 2012
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Andrew elson2
Performance Tuning Agenda
whoami Why tune?
Littles Law
!nstrumentation Real world e"ample
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Andrew elson#
! w"oami
Andrew Nelsonanelson$redhat%&om
Consultant with Red Hat North Ameri&a
A&ti'e in the (abbi" &ommunity )or appro"imately *years
+nown as nelsonab- in )orums and !RC
Author o) (ab&on and (b"api
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Andrew elson.
#"y Tune
/er)orman&e tunin is somethin we'e all needed todo at some point%
inimie wait time
!n&rease per)orman&e 3pae 'iews )or web ser'er4
!n&rease lone'ity o) old hardware
/ower sa'in
!ts too slow- 35sers are always so spe&i)i&4
A+A6 a"imie Return on !n'estment
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Andrew elson7
Little$s Law
/er)orman&e tunin is somethin we ha'e all had to do atsome point%
/er)orman&e tunin is de)ined by a )ormula 8nown asLittles Law
L9:h /ublished in 1;ueuin and&onestion in telephone networ8s%
L otal number o) Customers 3@ueue epth4 : Arri'al Rate
h A'erae time to ser'i&e 3&ustomer4 re>uests
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Andrew elsonueue,ss m M rep mem M sed sG%r3T0;U4,%G1GMaw8 sumV9O1P=Nprint sumP
5ser/arameter9C/%t"Q>ueue,ss m M rep mem M sed sG%w3T0;U4,%G1GMaw8 sumV9O1P=Nprint sumP
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Andrew elson17
Real #orld Example
Lets add some more raphs 3is84
')s%de'%readTdis8X,operationsU
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Andrew elson1