Re: RAM consumption when working with the gcc repo

This is for a 3.3GB process with the 2GB pack as input Looking at my process map, why is the pack file in the map four times?

2ba1f703b000-2ba23703b000 r--p 00000000 09:01 33079321
  /video/gcc/.git/objects/pack/pack-bd163555ea9240a7fdd07d2708a293872665f48b.pack
2ba23703b000-2ba23703c000 rw-p 2ba23703b000 00:00 0
2ba237c86000-2ba239352000 r--p 80000000 09:01 33079321
  /video/gcc/.git/objects/pack/pack-bd163555ea9240a7fdd07d2708a293872665f48b.pack
2ba2394b1000-2ba2794b1000 r--p 40000000 09:01 33079321
  /video/gcc/.git/objects/pack/pack-bd163555ea9240a7fdd07d2708a293872665f48b.pack
2ba2794b1000-2ba27a4b2000 rw-p 2ba2794b1000 00:00 0
2ba27bcb2000-2ba281c29000 rw-p 2ba23703c000 00:00 0
2ba281c29000-2ba2a32f5000 r--p 60000000 09:01 33079321
  /video/gcc/.git/objects/pack/pack-bd163555ea9240a7fdd07d2708a293872665f48b.pack
7fffb75e2000-7fffb75f7000 rw-p 7ffffffea000 00:00 0                      [stack]
7fffb75fe000-7fffb7600000 r-xp 7fffb75fe000 00:00 0                      [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
  [vsyscall]

Here's the heap:

00400000-004b9000 r-xp 00000000 08:16 296588
  /usr/local/bin/git
006b9000-006bd000 rw-p 000b9000 08:16 296588
  /usr/local/bin/git
006bd000-0c17f000 rw-p 006bd000 00:00 0                                  [heap]
40000000-40001000 ---p 40000000 00:00 0
40001000-40801000 rw-p 40001000 00:00 0
40801000-40802000 ---p 40801000 00:00 0
40802000-41002000 rw-p 40802000 00:00 0
41002000-41003000 ---p 41002000 00:00 0
41003000-41803000 rw-p 41003000 00:00 0
41803000-41804000 ---p 41803000 00:00 0
41804000-42004000 rw-p 41804000 00:00 0