Re: Bumping default data size limit on amd64?

[Robert Swindells <rjs%fdy2.co.uk@localhost>]

Colin Percival <cperciva%tarsnap.com@localhost> wrote:
>On 2017-02-03 06:52, Thomas Klausner wrote:
>> When testing security/scrypt, the self tests fail with the default
>> ulimits because one of the test needs 256MB. (After raising the data
>> size ulimit, the test succeeds.)
>> 
>> Colin Percival suggests that we change the port's defaults here.
>> 
>> DFLDSIZ in arch/amd64/include/vmparam.h was last bumped back in 2004.
>> 
>> He suspects that this would have been increased a long time ago if it
>> weren't for the fact that malloc allocates pages via mmap.
>> 
>> Anyway, opinions?
>
>Digging through my archives, I just found this email from two years ago.
>It looks like nobody had any opinions at the time -- maybe we can take a
>lack of objections as agreement and increase this value now?

There would probably have been more pressure to increase the default
data size in NetBSD if we checked whether the total amount of mmaped
memory was less than the limit rather than just checking each chunk.