I know it's correlated but my question was to know if the increase number of
locks had cpu usage consequences on IIS.
We already noticed that the number of web requests being processed has huge
impact on webservers CPUs.
I'd like to know if the same apply with SQL locks(e.g. ADO.NET objects need
to wait more resulting in an increase of page processing time, etc...) as
the SQL server CPUs are almost not impacted by the increased traffic.
Thanks
Alex
"John Saunders" <johnwsaundersiii at hotmail.com> wrote in message
news:eI**************@TK2MSFTNGP14.phx.gbl...
"Alex Callea" <al*********@sellys.com> wrote in message
news:O2**************@TK2MSFTNGP09.phx.gbl... Hi there,
We have a web application handling thousands of requests per seconds
reading sql server data which is heavily updated.
We are generally experiencing no performance problems.
On some occasions we get an increase of the traffic of about 15% for
short periods. In this case we observe something really strange: our
webserver CPU goes from about 40% usage to 100%, with memory usage
keeping low (about 50%). We see at the same time that the number of
sqlserver locks increases.
Are these 2 behaviours correlated? ..or any other ideas?
The traffic increases by 15%. The traffic passes through IIS. The
application in IIS calls SQL Server.
If I'm right, then this suggests that the behaviors correlate.
John Saunders
