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List:       subversion-dev
Subject:    Re: shrinking repository...
From:       Branko Čibej <brane () xbc ! nu>
Date:       2002-07-31 17:07:08
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Daniel Berlin wrote:

>
> On Wednesday, July 31, 2002, at 10:32  AM, cmpilato@collab.net wrote:
>
>> Karl Fogel <kfogel@newton.ch.collab.net> writes:
>>
>>> Mix <mixtim@acm.org> writes:
>>>
>>>> Several of the files are > 100K. The new repos were made with revision
>>>> 2809 so yeh, they are kind of recent. Can't remember which revision
>>>> made the old repos.
>>>>
>>>> My other repos don't have large files with numerous commits and they
>>>> are all roughly the same size.
>>>
>>>
>>> That's it, then.  Brane activated the new deltification code in
>>> revision 2803. :-)
>>
>>
>> Looks like we're getting savings even in the < 100K category.  I have
>> a copy of the Subversion repos at 2656.  59 Megs large with
>> unnecessary log files removed.  I dumped and reloaded it.  43 Megs
>> now.  `strings' table is quite a bit smaller.  But also, with the new
>> 1-Meg granularity on log files, I've saved 1.5 Megs.  Woohoo!
>
>
> Must be that we don't need to allocate as many overflow pages or 
> something because we can stuff stuff in the pages used by the 
> now-deltified >100k files.


Hey, I just remembered another thing I changed: In a lot of places, 
especially in reps-strings.c, we used to have buffers on the stack with 
hard-coded, arbitrarily chosen sizes. I changed all those to use 
(dynamically-allocated) SVN_STREAM_CHUNK_SIZE. So, indeed, Dan may be right!

-- 
Brane Čibej   <brane@xbc.nu>   http://www.xbc.nu/brane/


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