Re: [Valgrind-developers] vgPlain_search_transtab

[Julian S. <js...@ac...>]

One other thing that's unusual about this is: there's obviously
a lot of code discarding going on:
 
> 132410   23.2680  none-amd64-linux         none-amd64-linux
> delete_translations_in_sector_eclass
> 52773     9.2736  none-amd64-linux         none-amd64-linux
> vgPlain_discard_translations

Those costs would be incurred if the app frequently asks, via
client request, to discard translations.  The strange thing is
that these stats

--20302--  transtab: new        251,524 (6,866,739 -> 42,129,034; ratio
61:10) [0 scs]
--20302--  transtab: dumped     0 (0 -> ??)
--20302--  transtab: discarded  92 (1,687 -> ??)

show that almost no code actually did get discarded, though.

Possibly means the app is making lots of code-discard requests
for parts of the address space where in fact there is no code?

Just guessing.

J