Review request for 5049299
Florian Weimer
fweimer at bfk.de
Fri May 29 10:58:56 UTC 2009
* Andrew Haley:
>> Well, I thought -Xms means that. An untuned VM is not expected to hit
>> the -Xmx limit. At least this is what I see in practice, and to me
>> this is the distinction expressed between the -Xmx and -Xms flags.
>
> I am very sorry, "-Xmx" was a typo, or perhaps a thinko. In my original
> posting -- which was trimmed -- I said
Oops, sorry.
>> It makes more sense to allocate all the -Xms size immediately.
>
> and I thought you were disagreeing with me, but:
I tried to explain that, currently, the whole heap is reserved. I
think we agree that it makes sense to reserve just the -Xms portion,
and leave the rest at PROT_NONE (or whatever mechanism the kernel
developers recommend).
--
Florian Weimer <fweimer at bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
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