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Re: Running a repository out of RAM?

From: Troy Curtis Jr <troycurtisjr_at_gmail.com>
Date: 2007-06-26 07:27:02 CEST

On 6/20/07, Vineet Kumar <vineet@doorstop.net> wrote:
> * Troy Curtis Jr (troycurtisjr@gmail.com) [070617 15:21]:
> > Well server load and network isn't really the issue. It really seems
> > like I/O is a big reason.
> It seems like you may be skipping over a few well-known reliable steps
> and right into the realm of the experimental. If Linux's builtin
> caching isn't doing well enough for you, then maybe I really could shake
> a stick at your RAM =)
> Seriously, though, your first step (IMO) should be RAID. After that,
> measure performance on different filesystems. If it's still no good,
> you should consider a dedicated system, so that it can use all available
> RAM just for the buffer cache. Only if that's not an option would I
> consider trying to implement some sort of persistent mmap scheme.
> I don't think I've really said anything new here; other posters have
> already given these same suggestions. I just hoped to point out that
> you should pursue the more well-trod avenues first, and that "mmap"
> might be a good keyword to add to your searches.
> Vineet
> --
> http://www.doorstop.net/
> --
> http://www.aclu.org/ It's all about Freedom.
> Version: GnuPG v1.4.6 (GNU/Linux)
> iD8DBQFGeNJC7z3S33fUb9ERAqF4AJ0VFhBSnbgJRmVQOW7ouYllxg6RmQCgxUeX
> yvyu2dc/lbUHNjMERyfN3Mk=
> =RhdL

Unfortunately my management has been burned by RAID before. A
co-worker of mine who is a big fan of RAID even admits that you really
need to know what your doing to make things run smoothly. I don't
qualify :). I have no basis to convince my boss that I could manage a
RAID. Oh well, I was hoping that this road had been blazed ahead of
me before, it isn't a huge deal, just a couple of minutes. I just
really wanted to make use of all that RAM (though I don't even have
the box yet, or even have the confirmation that I AM getting the box).

Thanks for all of your suggestions.


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Received on Tue Jun 26 07:26:47 2007

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