m at obmail.net
Wed Nov 23 07:48:17 PST 2005
Sorry if this is the wrong place for this, but I haven't been getting
I'm trying to tune the system to allow very large mmap()'s in a
single process space, something on the order of 1.5 GB so I can pass
very large values for -Xms and -Xmx to java. I know I had been able
to do this on FreeBSD in the past but recent versions of either Java
or FreeBSD aren't playing nicely. currently..
FreeBSD host 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Tue Nov 22 00:22:53
EST 2005 root at host:/usr/obj/usr/src/sys/WWW i386
I've also tried the following under 5.4-p1...
rc = mmap(0, (891*1024*1024 + 0), 0, MAP_ANON | MAP_PRIVATE,
and it works but If I try
rc = mmap(0, (892*1024*1024 + 0), 0, MAP_ANON | MAP_PRIVATE,
it fails returning ENOMEM.
datasize 2096128 kbytes
stacksize 1048576 kbytes
If the program isn't doing anything else but that is there any reason
I'm getting limited in the amount of memory I can mmap() at about 892
MB? Ideally I'd like to be able to mmap most of the 2 GB available to
Oh, yes, there's plenty of free memory and swap.
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