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Re: Running a repository out of RAM?

From: Toby Thain <toby_at_smartgames.ca>
Date: 2007-06-20 18:49:11 CEST

On 20-Jun-07, at 1:57 AM, Troy Curtis Jr wrote:

> On 6/17/07, Ryan Schmidt <subversion-2007b@ryandesign.com> wrote:
>> On Jun 17, 2007, at 17:03, Troy Curtis Jr wrote:
>>
>> > On 6/17/07, Carsten Koch wrote:
>> >
>> >> FSFS is a zillion tiny files,...
>> ...
>>
>>
>>
>
> ...
> It does seem like FSFS is a little more flexible in a lot of ways.
> For instance, with FSFS I could conceivably do a periodic "cat * >
> /dev/null" in the directory containing the revisions to constantly
> keep them in the native linux disk cache. Apparently even a read only
> operation like this is not really safe to do on a bdb repo (or at
> least a copy is not safe).

To clarify this, you can't *use* such a copy (without taking measures
to quiesce BDB), as it probably won't be consistent.

But making a throw-away copy as described above should be perfectly
safe. If that breaks something when the original database is
accessed, then that would be a serious bug.

--Toby

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Received on Wed Jun 20 18:49:27 2007

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