On Tuesday, 24 October 2017 at 14:17:32 UTC, Dmitry Olshansky
wrote:
On Tuesday, 24 October 2017 at 13:29:12 UTC, Mike Parker wrote:
On Tuesday, 24 October 2017 at 13:19:15 UTC, Dmitry Olshansky
wrote:
What is dcache?
It's a patch for dmd that enables a *persistent*
shared-memory hash-map, protected by a spin-lock from races.
Dmd processes with -cache flag would detect the following
pattern:
Blog post or it didn't happen!
Let us at least try it outside of toy examples.
If anybody has std.regex.ctRegex usage I'd be curious to see:
1. Build time w/o -cache=mmap
2. First build time w -cache=mmap
3. Subsequent build times w -cache=mmap
P.S. It's a crude PoC. I think we can do better.
Another caveat: Posix-only for now.
Did a few cleanups and widened the scope a bit.
So here is what happens in my benchmark for std.regex.
-O -inline -release:
88s --> 80s, memory use ~700Mb -> ~400Mb
-release:
19s -> 12.8s
Experimental std.regex.v2 is sadly broken by a recent change to
array ops.
It would be very interesting to check as it eats up to 17Gb of
RAM.
