Re: GC leaks debugging
Erik Groeneveld <[email protected]>
| Newsgroups | gmane.comp.gcc.java.devel |
|---|---|
| Message-ID | <[email protected]> |
On Thu, Apr 14, 2011 at 10:43 AM, Andrew Haley <[email protected]> wrote: >> I will be looking into getting USE_MMAP to work, as I think that would >> be a more definite solution. However if I enable it, it segvs. >> >> Are there any specific obstacles for USE_MUNMAP when used in GCJ, or >> should it just work? > > MUNMAP, hmm. I don't know; it should work but there's no experience. Ok, that is important information if I start debugging: it is perhaps only a bug, not a fundamental problem per se. > Why do you want to munmap, anyway? Are you running out of swap space? Well, I assume that if the GC unmaps a page (hblk), it can always be mapped at any other location when a new block is needed, effectively circumventing fragmentation completely. However, I did not dive into the exact usage of mmap and I assumed a straightforward way of utilization of mmap by the GC. I might be wrong....