Hi,
I've just been playing with the item size changes in 1.4.2, and I've
noticed a few issues that I wouldn't class as critical, but that we
probably ought to address somehow:
1) You can set the item size to be larger than the configured memory
allocation:
./memcached -m 16 -I 128m
We should at least warn that the two values are somewhat incongruous.
Maybe add this to the recent warnings discussion for cmdline arguments?
On a related note, should we mention that this will also increase the
number of slabs up to the size of the item size you specify?
2) Could we add into the output of the help that the limit for max
item size is 128mb; you get a warning when you try to set something
larger than this, but something in the output from -h would be nice.
3) I've updated the relevant docs in http://dev.mysql.com/doc/refman/5.1/en/ha-memcached.html
and the included FAQ on the configurable item size, but the FAQ on
the project wiki still shows the 1MB limits and not the recent changes
in 1.4.2. I don't seem to have rights to update the pages, or I would
do it myself ;)
MC
--
Martin MC Brown, Technical Writer
MySQL and Infrastructure Group, Sun Microsystems
http://sun.com | http://mysql.com
Phone: x18435/+44 247 669 8435 Skype: mcmcslp
