[android-developers] Why does ddms heap size not match HPROF?

I'm doing memory profiling on my Xoom application. DDMS says my heap
size is "96.133M" and that I have "89.136M" allocated. I did a HPROF
dump, ran hprof-conv, and then loaded the .hprof file into MAT. It
says my heap is 37.3 MB. What gives?

Looking at the output of "adb logcat" while my app is running, it
seems to agree with ddms.

06-22 22:05:59.935: DEBUG/dalvikvm(11875): GC_FOR_ALLOC freed 0K, 3%
free 95699K/98567K, paused 172ms

(note the logcat message I grabbed was not taken at the exact same
time as the hprof -- at this time the sizes reported in logcat matched
what ddms says).

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