On 04/04/2016 09:22 AM, Ming Lin wrote:
Hi,
I'm debugging a memory leak in an internal driver.
There is ~2G leak after stress tests.
If I read below /proc/meminfo correctly, it doesn't show where the 2G
memory is possibly used.
Buffers + Cached + Active*/Inactive* + Slab* only about 300M.
Is there other statistics not shown in /proc/meminfo or am I missing
obvious things?
Nope. Statistics exist only for the common cases. Having e.g. each
driver add own line there wouldn't be feasible.
However I already considered and would welcome an explicit
"Unaccounted:" line in /prec/meminfo, so that the amount of possibly
leaked memory is immediately visible and one doesn't need to remember
which lines are best to sum up and whether there were subtle changes
depending on kernel version.
root@target:~# page-types
flags page-count MB symbolic-flags long-symbolic-flags
For debugging such leaks I suggest you try the page_owner functionality
instead.
Vlastimil
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>