cache large static files in memory
gabe at vtunnel.com
Wed Jun 24 11:41:26 MSD 2009
I'm not exactly sure. Generally it works pretty well if you've got
enough spare ram compared to the size of the files that need to be in
the cache. There is a tendency to only buy as much ram for your server
as you need to avoid swapping, but if you add a couple more gigs you
can improve your i/o performance pretty significantly. That's also
pretty cheap with ram prices so low these days.
On Tue, Jun 23, 2009 at 11:18 PM, Hua Su<huas.su at gmail.com> wrote:
> Thanks! So is there any guidance about how to configure cache behavior
> of linux file systems to gain max performance?
> On Wed, Jun 24, 2009 at 1:53 PM, Gabriel Ramuglia <gabe at vtunnel.com> wrote:
>> The linux file system will cache recently or frequently used files in
>> memory regardless, and the effect is similar in performance to an
>> application level cache. A separate application level cache would not
>> necessarily be desirable since the file system cache would largely
>> have the same items in it anyway; storing them again in an application
>> level memory cache would simply leave less total memory available to
>> file caching or other uses.
>> On Tue, Jun 23, 2009 at 10:00 PM, Hua Su<huas.su at gmail.com> wrote:
>> > Hi all,
>> > Does nginx support to cache static files in memory if it finds several
>> > large
>> > files are requested frequently? If yes, how to control the cache? If
>> > not, is
>> > there any simple way to implement a similar function?
>> > --
>> > Hua Su
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