[Tickets #10775] Re: VFS Memory Usage

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Ticket URL: http://bugs.horde.org/ticket/10775
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  Ticket             | 10775
  Updated By         | Michael Slusarz <slusarz at horde.org>
  Summary            | VFS Memory Usage
  Queue              | Horde Framework Packages
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
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Michael Slusarz <slusarz at horde.org> (2011-11-17 00:44) wrote:

> So... for all the advances we have made in memory reduction in Horde  
> 4, VFS kills much of the joy.  Uploading a 1.2 MB attachment to IMP,  
> a call to VFS::write(), using a Postgresql DB backend, uses 35.5 MB  
> of memory.  That is unacceptable.

A quick pass at this is not promising, at least for the SQL driver:  
the critical issue seems to instead be that Horde_Db does not accept  
stream resources as input - it expects everything in strings.  Which  
is depressing - this is going to make tuning very difficult, and  
pretty much makes Horde_Db the bottleneck when it comes to memory  
usage improvements.