memcached problems...

[Igor Sysoev]

On Tue, Sep 01, 2009 at 12:56:19PM +0300, Marcus Clyne wrote:

> >However, as I already said, memcached will not resolve your problem.
> >You just will waste CPU time and memory. Instead you should tune kernel
> >to allow cache as much as possible. How much is the host physical memory
> >and how much is whole size of flv/swf content ?
> >
> >I can not say about Linux, but in FreeBSD this can be done by increasing
> >"sysctl kern.maxvnodes", which is 100,000 vnodes by default. A kernel
> >stores file pages binding them to a vnode.
> >  
> On Linux you want to increase either
> 
> /proc/sys/fs/inode-max    (if you have it - I don't on my Ubunutu 9.04 
> x64 - not sure why)
> 
> or
> 
> /proc/sys/fs/file-max
> 
> e.g.
> 
> You can view these by e.g.:
> 
> cat /proc/sys/fs/inode-max
> 
> or change them by e.g.:
> 
> echo 1000000 > /proc/sys/fs/file-max
> 
> If you use the inode-max option, a number 3-4 x as big as the file-max 
> would be normal.

As I understand file-max is number of simultaneously open files by
applications, including sockets, etc. As to inode-max it seems it has
been removed in 2.4.

> AFAIK this will reset upon reboot, so you'd probably want to add it to a 
> startup script.
> 
> Marcus.


-- 
Igor Sysoev
http://sysoev.ru/en/