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Increase rtld initial memory pool size from 32kB to 128kB.

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The old value was probably fine back in 1998, when that code was imported
(although the comments still mention VAX, which was quite obsolete by then);
now, however, it's too small to handle our libc, which results in some
additional calls to munmap/mmap later on.  Asking for more virtual address
space is virtually free, and syscalls are not, thus the change.

It was suggested by kib@ that this might be a symptom of a deeper problem.
It doesn't only affect libc, though - the change also improves rtld memory
management for eg KDE libraries.  I guess it's just a natural bloat.

MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D12834
This commit is contained in:
Edward Tomasz Napierala 2017-11-18 13:21:22 +00:00
parent 95197f47ff
commit ef4968d9e7
1 changed files with 1 additions and 1 deletions
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2
libexec/rtld-elf/malloc.c
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@ -61,7 +61,7 @@ static int findbucket();
/* /*
* Pre-allocate mmap'ed pages * Pre-allocate mmap'ed pages
*/ */
#define NPOOLPAGES (32*1024/pagesz) #define NPOOLPAGES (128*1024/pagesz)
static caddr_t pagepool_start, pagepool_end; static caddr_t pagepool_start, pagepool_end;
static int morepages(); static int morepages();