Would it be possible to force a discard of the LRU on all inserts,
regardless of memory used if the LRU is expired?
If your dataset to cache is "only" 10GB, and expires after 1 hour,
then on a 30GB memcached install it would only use ~10GB of memory,
rather than all 30GB with ~20GB of stale data. Is that a fair
assessment?
Randy
On May 8, 2007, at 10:56 AM, Jehiah Czebotar wrote:
On 5/8/07, Timo Ewalds <[EMAIL PROTECTED]> wrote:
As a point of interest, a reaper command could be useful. It is not
something we would ever run while our site is live, but, if we're
taking
the site down to do a code update, and likely flushing or restarting
memcache anyway, the time it takes to run wouldn't matter, and it
would
be a great way to see how much memcache space we really need. We're
getting a 95% hit rate with our 30gb, but, would 10gb be enough? With
the latest version we will be able to tell if we're getting any
evictions, but that just tells us if we don't have enough space,
not if
we've got way too much.
There was talk of adding a new statistic to capture information about
the number of items pushed from cache before their expiration time;
that would also give you the same information.
I'm not sure if there was a patch for that, or if it is in the
current release.
--
jehiah
