asure response time 99
percentile or higher, for example) this method can give you more stable
performance.
On Jul 20, 2012, at 10:32 PM, Dragon Fly wrote:
>
> Thank you.
>
>> From: dawid.we...@gmail.com
>> Date: Thu, 19 Jul 2012 13:34:26 +0200
>> Subject: Re
Thank you.
> From: dawid.we...@gmail.com
> Date: Thu, 19 Jul 2012 13:34:26 +0200
> Subject: Re: RAM or SSD...
> To: java-user@lucene.apache.org
>
> Read this:
> http://blog.thetaphi.de/2012/07/use-lucenes-mmapdirectory-on-64bit.html
>
> Dawid
>
> On Thu, Ju
uld speed that
> up. I read the JavaDoc for MMapDirectory but didn't really understand how
> that differs from RAMDirectory. Could someone please explain?
>
>> Date: Wed, 18 Jul 2012 23:46:51 -0700
>> Subject: Re: RAM or SSD...
>> From: vfunst...@gmail.com
>&
plain?
> Date: Wed, 18 Jul 2012 23:46:51 -0700
> Subject: Re: RAM or SSD...
> From: vfunst...@gmail.com
> To: java-user@lucene.apache.org
>
> I was referring to *RAMDirectory*.
>
> On Wed, Jul 18, 2012 at 11:04 PM, Lance Norskog wrote:
> >> You do not want to store 3
I was referring to *RAMDirectory*.
On Wed, Jul 18, 2012 at 11:04 PM, Lance Norskog wrote:
>> You do not want to store 30 G of data in the JVM heap, no matter what
library does this.
> MMapDirectory does not store data in the JVM heap. It lets the
> operating system manage the disk buffer space. E
> Why anyone buys computers without SSD's is a mystery to me. Use SSDs for
On topic and highly recommended:
http://www.youtube.com/watch?v=H7PJ1oeEyGg
Dawid
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To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
For a
> You do not want to store 30 G of data in the JVM heap, no matter what library
> does this.
MMapDirectory does not store data in the JVM heap. It lets the
operating system manage the disk buffer space. Even if the JVM says "I
have 30G of memory space", it really does not. It only has address
spac
On Wed, 2012-07-18 at 17:50 +0200, Dragon Fly wrote:
> If I want to improve performance, which of the following is better and why?
>
> 1. Buy a machine with a lot of RAM and use a RAMDirectory for the index.
As others has pointed out, MMapDirectory should work better than
RAMDirectory. I am sure
> Rum is an essential ingredient in all software systems :-)
You probably meant "social systems".
D.
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@lucene.apache.org
> Subject: Re: RAM or SSD...
>
> 1. use mmap directory
> 2. buy rum
> 3. get an SSD
>
> simon :)
>
> On Wed, Jul 18, 2012 at 8:36 PM, Vitaly Funstein wrote:
>> You do not want to store 30 G of data in the JVM heap, no matter what
>> librar
Rum is an essential ingredient in all software systems :-)
-Original Message-
From: Simon Willnauer [mailto:simon.willna...@gmail.com]
Sent: Wednesday, July 18, 2012 11:49 AM
To: java-user@lucene.apache.org
Subject: Re: RAM or SSD...
1. use mmap directory
2. buy rum
3. get an SSD
simon
1. use mmap directory
2. buy rum
3. get an SSD
simon :)
On Wed, Jul 18, 2012 at 8:36 PM, Vitaly Funstein wrote:
> You do not want to store 30 G of data in the JVM heap, no matter what
> library does this.
>
> On Wed, Jul 18, 2012 at 10:44 AM, Paul Jakubik wrote:
>> If only 30GB, go with RAM and
You do not want to store 30 G of data in the JVM heap, no matter what
library does this.
On Wed, Jul 18, 2012 at 10:44 AM, Paul Jakubik wrote:
> If only 30GB, go with RAM and MMAPDirectory (as long as you have the budget
> for that hardware).
>
> My understanding is that RAMDirectory is intended
If only 30GB, go with RAM and MMAPDirectory (as long as you have the budget
for that hardware).
My understanding is that RAMDirectory is intended for unit tests, not for
production indexes.
On Wed, Jul 18, 2012 at 10:50 AM, Dragon Fly wrote:
>
> Hi,
>
> If I want to improve performance, which of
What metrics are you measuring performance by? Also, what is your current
setup? You might be able to speed up your current setup by tweaking
configuration settings without needing more hardware.
On Wed, Jul 18, 2012 at 11:50 AM, Dragon Fly wrote:
>
> Hi,
>
> If I want to improve performance, whi
Hi,
If I want to improve performance, which of the following is better and why?
1. Buy a machine with a lot of RAM and use a RAMDirectory for the index.
2. Put the index on a solid state drive.
By the way, my index is about 30 GB. Thank you.
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