On Mon, May 09, 2016 at 11:04:59PM -0500, Malahal Naineni wrote:
Hi All,
We have ganesha NFS server that calls innetgr() call to validate
client request. Noticing that all ganesha threads were making innetgr()
calls and spending a lot of time there, I wrote a small script that just
repeatedly calls innetgr() with same host name but with two different
netgroups. Each call seems take about 0.5 second. I would like to know
if sssd is expected to cache innetger() results or is it left to glibc?
Does any one know if glibc caches such requests of a larger nested
subgroup? Is this behaviour expected or something badly configured here?
Appreciate any responses.
SSSD should cache netgroups similar to any other object. If the netgroup
expires, we might take a bit of time with large nested hierarchies to
write them all back to the cache though.
Do the calls always take long or only when the cache expires?