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Re: How to improve performance with MDB backend?
Just for Info, you should take a look to the "tuned" daemon and
setting a consistent profile for your workload. It can help a lot.
Best
2013/4/19, SaÅa-Stjepan BakÅa <ssbaksa@gmail.com>:
> Ok. I see your point and lesson is learned. Will do as suggested.
>
>
> On Fri, Apr 19, 2013 at 6:07 PM, Howard Chu <hyc@symas.com> wrote:
>
>>
>>
>>>
>> You really need to learn something more about system administration; you
>> clearly don't know what to investigate but this is all fundamental
>> sysadmin
>> knowledge.
>>
>> First things first - when something is "slow" - what exactly is slow? Is
>> it using excessive CPU time? Is it waiting for disk I/O? Every sysadmin
>> should automatically ask this question first of all, and every sysadmin
>> should know how to tell the difference. If you don't know these things
>> then
>> you are not qualified to be a sysadmin and need to go get training. This
>> is
>> not the forum for teaching you these things.
>>
>> Copy/pasting someone else's VM tuning settings without understanding what
>> they mean or why they are being set is "cargo cult sysadmin". It is wrong
>> and nobody on this list / in this community should be encouraging it.
>> Quick
>> easy spoonfed answers don't actually help understanding, and
>> understanding
>> is the only real way forward.
>>
>> In particular, VM tuning settings are highly OS dependent, and probably
>> kernel version dependent too. Good settings depend on exactly what your
>> own
>> system contains; settings that work for someone else may be useless or
>> worse on your own setup.
>>
>> Simple answers have narrow relevance that gets obsolete quickly. Learning
>> how to think and investigate problems is knowledge that serves you the
>> rest
>> of your life.
>>
>> As a starting point - what does vmstat tell you? Don't just paste its
>> output here, learn what it means.
>>
>>
>> --
>> -- Howard Chu
>> CTO, Symas Corp. http://www.symas.com
>> Director, Highland Sun http://highlandsun.com/hyc/
>> Chief Architect, OpenLDAP
>> http://www.openldap.org/**project/<http://www.openldap.org/project/>
>>
>
--
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