Re: What are people doing for data sharing between real servers

[Joe Stump <joe@xxxxxxxxxxxx>]

Are you hashing your directories? My read/write speeds dropped  
through the floor when I didn't notice PHP wasn't cleaning up session  
files after itself. The problem was I had a couple of million session  
files in a single directory. I now run a script that nukes old  
session files and my speeds are more than adequate.
If you have more than a thousand files in a single directory that  
could be a huge problem. The solution I like to use is to hash  
directories based on file name:
foobar.jpg -> /images/fo/ba/foobar.jpg (using substr() for instance).  
That way you break up images across multiple directories.
--Joe

On Jul 14, 2005, at 2:13 PM, Randy Paries wrote:

> On each server I am getting about 45 million hits a month. That is  
> about 4
> millions pages a month but unfortunately the pages are customer  
> designed and
> some are very very large with lots of images. That is why I gave  
> you hits
> instead of visits. My one real server is running SCSI Raid 5. I  
> have about
> 80nfsd running. The symptom I am having is sometimes when I am in  
> the editor
> and do a write or if I do a directory listing it can take up to 30  
> seconds
> to write.
>
> For Jacob's question, I am serving up static web pages and also I have
> scripts that read text and xml files and lots and lots of images
>
> Randy
>
> -----Original Message-----
> From: lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Joe  
> Stump
> Sent: Thursday, July 14, 2005 3:53 PM
> To: LinuxVirtualServer.org users mailing list.
> Subject: Re: What are people doing for data sharing between real  
> servers
> You must be doing crazy ass traffic. What NFS server are you using?
> Are you running v3 over TCP? Are you running the kernel server? We  
> have
> three real servers connecting to a single NFS server, which has
> 8 SATA Raptor's in RAID5 (crazy fast). This setup does 12 million  
> page views
> a month with little to no load (it also has a dedicated MySQL  
> server that
> all the real servers connect to).
>
> --Joe
>
> On Jul 14, 2005, at 1:47 PM, Randy Paries wrote:
>
>
> > Hello,
> >
> > I have 1 director and 2 real servers. They are Web and j2ee  
> > servers on
> > RH9
> >
> > They both need access to the same data, so real server 2 nfs mounts
> > real server 1 /home/webroot filesystem
> >
> > this is working ok, but i am getting to the level where i need to  
> > look
> > at better performance options.
> >
> > What are people on this list using?
> >
> > I am not a hardware guy, but from what i can tell i think a need a
> > fiber array that can be clustered???
> >
> > Thanks for any insight
> >
> > Randy
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