Comment #1 on issue 95 by trond.norbye: Memory allocation default change
(-m < 40 doesn't work)
http://code.google.com/p/memcached/issues/detail?id=95
My thoughts:
* Always allocate all memory from the system up front. This makes it easier
for the
end user to see how much memory the server will use...
* If you specify a really low memory limit (so that you cannot satisfy
preallocation
of a slab page to each slab class), disable the preallocation of memory
into each
slab class. Remember to write out a warning to the user that preallocation
was
disabled, so that he might get OOM when storing objects.
* If you specify a really high maximum item limit, preallocation of memory
into all
of the different slab classes will eat up _a lot_ of memory (20G if you set
-I100m),
so I think we should disable preallocation of memory if it consumes more
than lets
say 20% of the total memory you gave memcached. (and we should of course
warn the
user)... Why? I believe that most of the objects stored in memcached will
most likely
be relatively equal in size (with some exceptions).
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