On 5/2/2011 9:18 PM, Walter Bright wrote:
On 5/2/2011 1:14 PM, Jonathan M Davis wrote:
The problem is far worse on Windows than on Linux - both in terms of the
amount of memory eaten by dmd and because the Windows unit tests are all
compiled together instead of separately, but dmd still eats too much memory on
OSes other than Windows. FreeBSD would have the unit tests compiled separately
like on Linux, so dmd shouldn't be running out of memory in the same way as
occurs on Windows, but it could still be using a lot of memory, and if
Walter's machine doesn't have a lot of it, and if FreeBSD tries to kill
processes that use too much, then that could be the problem. On Windows, it
very clearly states that dmd ran out of memory, but if the OS just kills the
process, then you might not get such a clear message.
I've been hoping that Don's CTFE fixes would reduce dmd's memory footprint
enough to get rid of issue 5454, but since they're buggy enough that Phobos'
unit tests don't currently build, I have no idea how close they've gotten to
fixing the problem.
On FreeBSD it's getting a "Killed: 9" message while running dmd after running
for a looong time. Running under gdb shows it dying somewhere deep in malloc().
By deleting unittests one by one, I got it to pass dmd. Now if fails with a
"Killed: 9" message from ld, the linker. Checking the object file for datetime.o
yields a 4.6 Mb file (and that's without debug info turned on!). Clearly,
reducing the memory consumption of dmd will not fix this problem.
Compiling std.datetime with -release -O gives a 441,000 byte object file.
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