>>>>> "matthew" == matthew mcglynn <mcglynn@stripped> writes:
matthew> This is probably a really dumb question...
matthew> Every example of buffer settings I've seen
matthew> has used powers of two. For example, from the
matthew> sample configuration file:
matthew> set-variable = key_buffer=16M
matthew> set-variable = max_allowed_packet=1M
matthew> set-variable = thread_stack=128K
matthew> set-variable = max_allowed_packet=16M
matthew> set-variable = keybuffer=16M
matthew> Similarly, the default table_cache is 64, and when
matthew> people ask on this list about running out of file
matthew> descriptors, the response is usually "set table_cache
matthew> to 32".
matthew> My dumb question is: do these have to all be powers of two ?!
matthew> If for my application, a table_cache of 128 is insufficient,
matthew> can I bump it to 150 or do I need to go all the way to 256 ?
I just prefer to use powers as two as this gives you the best memory
utilization with many memory allocation packages!
You don't however have to use powers of two; For the table cache 150
should be fine!