Windbg memory size in heap summary did not match the usage statistic

Asked Apr 23 '19 at 03:27

Active Sep 18 '21 at 20:36

Viewed 217 times

I have a .dmp file, created from TaskManager. When using windbg command:

!heap -s

it shows result like this:

In this line:

00a40000 00000002 1084772 1074756 1084772 339109  3979   218    4     6b   LFH

we can see the memory usage is about 1Gb, then I use the command

!heap -stat -h 00a40000

to check the usage statistic, the result shows here:

The question here is: from the statistic, the top line is:

a0 24 - 1680  (17.14)

which means the memory used is 1680(HEX) = 5Kb, and the total memory is 5Kb / 17.14% = 29.17Kb, which is quite different from 1Gb in the summary.

Did I make any mistake here? How do I solve this problem?

edited Sep 18 '21 at 20:36

trincot

317,000
35
244
286

asked Apr 23 '19 at 03:27

Loren Liu

1

Note that it is a percentage of the **busy** blocks, not of the commited memory, which is quite different. – Neitsa Apr 23 '19 at 12:21
That heap also has 4 virtual blocks, which can be really large. – Thomas Weller Apr 23 '19 at 12:31

Windbg memory size in heap summary did not match the usage statistic

0 Answers0