Re: [Gems-users] Very high cache miss overhead


Date: Thu, 15 Apr 2010 12:52:09 -0500
From: Mark Samuelson <msamuelson@xxxxxxxx>
Subject: Re: [Gems-users] Very high cache miss overhead
They are almost all supervisor misses.  What does that mean?

Carole-Jean Wu wrote:
Are the cache misses you saw supervisor or user misses?
Carole

On Thu, Apr 15, 2010 at 1:21 PM, Byn Choi <bynchoi1@xxxxxxxxxxxx <mailto:bynchoi1@xxxxxxxxxxxx>> wrote:

    What if you didn't run anything, i.e. maybe there is some background
    process?

    Byn


    On Apr 15, 2010, at 11:28 AM, Mark Samuelson wrote:

        We are using the MESI_CMP_filter_directory and are getting over
        900000 cache misses in both L1 and L2 even when are test program
        does nothing but sleep.  Is this level of overhead normal?

        Mark
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