Bug 1603801 [patch] Avoid dcache pollution from sdb_measureAccess() r=mt

As implemented, when sdb_measureAccess() runs it creates up to 10,000 negative
dcache entries (cached nonexistent filenames).

There is no advantage to leaving these particular filenames in the cache; they
will never be searched again. Subsequent runs will run a new test with an
intentionally different set of filenames. This can have detrimental effects on
some systems; a massive negative dcache can lead to memory or performance
problems.

Since not all platforms have a problem with negative dcache entries, this patch
is limitted to those platforms that request it at compilie time (Linux is
current the only patch that does.)

Differential Revision: https://phabricator.services.mozilla.com/D59652

0 files changed, 0 insertions, 0 deletions