http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53226
Bug #: 53226
Summary: memory consumption for heavy template instantiations
increased massively
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: mario-baum...@web.de
Hi All,
i noticed that memory consumption for heavy template instantiations increased
massively between gcc revision 187034 and 187074. If a compile my current
project (unfortunately closed source) i got e.g.
> top
top - 08:58:08 up 1 day, 30 min, 11 users, load average: 28.83, 19.13, 13.36
Mem: 24607424k total, 24464568k used, 142856k free, 752k buffers
Swap: 52436120k total, 6650108k used, 45786012k free, 4174408k cached
PID PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
14825 20 0 24.5g 18g 496 R 89.1 79.0 3:48.75 cc1plus
Mario.
---
> uname -a
Linux ahsoka.intec.dom 2.6.32-220.13.1.el6.x86_64 #1 SMP Thu Mar 29 11:46:40
EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
> rpm -qa "glibc*" | grep -e 'glibc-[0-9]' | sort -u
glibc-2.12-1.47.el6_2.9.i686
glibc-2.12-1.47.el6_2.9.x86_64
> g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/app2/gcc/4.8.0-20120503-svn187074/x86_64/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --prefix=/app2/gcc/4.8.0-20120503-svn187074/x86_64
--enable-languages=c,c++,fortran --disable-nls
--with-gmp=/app2/gcc/4.8.0-20120503-svn187074/x86_64/aux
--with-mpfr=/app2/gcc/4.8.0-20120503-svn187074/x86_64/aux
--with-mpc=/app2/gcc/4.8.0-20120503-svn187074/x86_64/aux
--with-ppl=/app2/gcc/4.8.0-20120503-svn187074/x86_64/aux
--with-cloog=/app2/gcc/4.8.0-20120503-svn187074/x86_64/aux
Thread model: posix
gcc version 4.8.0 20120503 (experimental) (GCC)
> ld -v
GNU ld (GNU Binutils) 2.22.52.20120503
