[Bug c++/43601] Enormous increase in DLL object files size in 4.5

[dongsheng.song at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43601

--- Comment #58 from Dongsheng Song <dongsheng.song at gmail dot com> 2011-04-10 04:32:23 UTC ---
(In reply to comment #57)
> (In reply to comment #56)
> > What works for me on Cygwin, and so may well also work for anyone using MSYS,
> > is setting the heap_chunk_in_mb registry parameter to some value in the range
> > 1024 - 1536.  I use 1024 myself and that gives me sufficient headroom to link
> > libgcj dll, which is huge; if it works for that, it's likely to help with wx
> > dll as well.
> > 
> > http://cygwin.com/cygwin-ug-net/setup-maxmem.html
> 
> I don't think so. Because I observed ld.exe use memory over 1.7GB, so link wx
> monolithic library require use more memory than 32 bit OS limit. For cross
> compile under Linux, link wx can use near 3G memory, it still failed.
> 
> Then link wx require 4G or more memory, maybe someone can try use 64bit linker
> to build single huge monolithic library, tell us the max memory ld used.

I test on 64bit Linux VM, after ld running 6 CPU hours, use 4728MB memory,
still not finished, so I think there maybe have potential infinite loop and
memory leaks when link many object files.

I don't know this is GCC bug, or ld bug, or both ?

http://sourceware.org/bugzilla/show_bug.cgi?id=12658

ld running 6 hours cpu time, use 4.6GB memory:

VmPeak:  4776608 kB
VmSize:  4734656 kB
VmLck:         0 kB
VmHWM:   3020260 kB
VmRSS:   2982304 kB
VmData:  4728000 kB
VmStk:       100 kB
VmExe:       912 kB
VmLib:      1504 kB
VmPTE:      9232 kB
Threads:        1

Cpu(s):  7.9%us, 11.5%sy,  0.0%ni, 44.4%id, 33.3%wa,  0.2%hi,  2.7%si,  0.0%st
Mem:   3095296k total,  3073516k used,    21780k free,       16k buffers
Swap:  7811064k total,  3905532k used,  3905532k free,     9484k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1110 dongshen  20   0 4623m 2.8g  196 D   49 96.1 358:15.13 ld