2GB limit

[Maritza Mendez]

On Sun, Oct 10, 2010 at 7:08 PM, Martin Pool <mbp at canonical.com> wrote:

> On 10 October 2010 01:26, Maritza Mendez <martitzam at gmail.com> wrote:
> > [1] I expect to have repos which are large compared to physical RAM.  So
> to
> > accelerate testing it turns out to be convenient to work with modest (1.5
> > GB) branches on a low-memory system.  For example, back in the bzr 2.0
> days,
> > bzr just could not finish committing teh origional branch on the 512MB
> > Ububtu box.  Now, with bzr 2.2, bzr survives an hour or more of
> > disk-thrashing and gets the branch committed.  Yes, I am sometimes cruel.
> > We like stress testing, because we know the future will be stressful.
>
> On Ubuntu/Unix, you can use ulimit to restrict how much memory is
> available to processes started under a particular shell.  This will
> not necessarily give precisely the same behaviour as a hardware limit
> (since that will also affect kernel memory usage) but it it's easy to
> vary.
>
> For example
>
>  $ ulimit -v 512000
>  $ bzr commit ...
>
> --
> Martin
>

Agreed.  I mentioned (in another post) that I am not using ulimit because I
don;t want one effect to mask the effect I'm looking for.  But now that John
has confirmed the "signature" of my traceback I can use ulimit and work
against the signature rather than work against "it's broke."

Thanks,
~M
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