ammp using un-accounted-for 130MB extra memory

_From [derek.br...@gmail.com](https://code.google.com/u/117968039472581148324/) on December 10, 2010 18:06:09_

PR 612709

Dr. Memory is using a lot more memory than Memcheck on spec2k ammp. For
every single other spec2k benchmark it's the other way around.

For ammp:
## RSS VSz
## native 14204 15608
## Memcheck 48896 90612
## Dr.Memory 146272 336080

I can't figure out where the beyond-native 220MB of vsz or even enough to
make up 132MB of rss are coming from! adding in library space, should be
around 90MB VSz, close to Memcheck, so where is the other 130MB?!?

```
shadow: count= 0, cur= 0 KB, max= 53873 KB
Peak mmap capacity (bytes) : 888832
Peak heap capacity (bytes) : 63131648
Peak total memory from OS : 73437184
```

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=206_