[m-dev.] enabling stseg component by default
paul at bone.id.au
Wed May 22 14:44:25 AEST 2013
On Wed, May 22, 2013 at 02:34:22PM +1000, Julien Fischer wrote:
> On Wed, 22 May 2013, Paul Bone wrote:
>> On Tue, May 21, 2013 at 05:14:22PM +1000, Julien Fischer wrote:
>>> Hi all,
>>> I propose that we enable the stseg (stack segments) grade component
>>> by default for all low-level C grades in the post 13.05 versions
>>> of the compiler.
>>> Any objections?
>> I don't mind. Although the memory zones code probably needs further tuning,
> In which respect?
There are three things I"m aware of:
1) You requested a way to get stats about memory zone usage, I never
2) The caching and freeing of zones (how many do we cache, what policy
is used to prevent the cache from growing too large) has never been
3) I planned, but never implemented, per-engine caching of stack zones
in parallel grades (in addition to a global cache). My current
thinking is that an engine should hang onto a small number of zones,
1 or perhaps 2 so that if a process keeps crossing a zone threshold
it doesn't need to bother the global cache often. The local cache's
data structure should also be very simple to make this operation as
quick as possible.
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