topic Re: Kernel Parameters For Mail Server Application in Operating System - HP-UX

Kernel Parameters For Mail Server Application

vselvaraj — Wed, 20 Sep 2000 09:53:05 GMT

Dear All
I am having HP 9000 L-1000 -HPUX 11.00 servers in ISP site.
I wanted to use the servers for mailing and Web applications.

I wanted to have "5000 concurrent requests"
on mail and webservers.

For the above case what are the Optimum Kernel parameters need to be changed?
can any one suggest me on this?
Thanks in advance
Selva...

Re: Kernel Parameters For Mail Server Application

Stefan Farrelly — Wed, 20 Sep 2000 11:02:48 GMT

From the mail side youre going to need to boost nproc and maxuprc to the roof, ie. 5000+. You will consequently need to increase a whole bunch of other parameters very high, ninode, nfile, nflocks.

Re: Kernel Parameters For Mail Server Application

James R. Ferguson — Wed, 20 Sep 2000 11:06:14 GMT

Hi:

A good general reference document for kernel parameters is:

http://docs.hp.com/hpux/content/KCparams.OverviewAll.html

...JRF...

Re: Kernel Parameters For Mail Server Application

Dan Am — Thu, 21 Sep 2000 10:35:25 GMT

you might also take a look at
"sendfile_max" , a special webserver-parameter.

Re: Kernel Parameters For Mail Server Application

Dan Am — Thu, 21 Sep 2000 10:35:52 GMT

you might also take a look at
"sendfile_max" , a special webserver-parameter.

Re: Kernel Parameters For Mail Server Application

Dan Am — Thu, 21 Sep 2000 11:14:05 GMT

you might alsohave a look at
"sendfile_max" - parameter for webservers

Re: Kernel Parameters For Mail Server Application

Dan Am — Thu, 21 Sep 2000 11:17:03 GMT

sorry, the server was playing hide and seek

Re: Kernel Parameters For Mail Server Application

Shannon Petry — Fri, 22 Sep 2000 16:33:24 GMT

If you increast the maxusers parameter, it should bump up most other param's for you. (This is using SAM to modify the kernel).
What you should do is configure to the estimated number of MAXIMIM SIMULTANEOUS connections. I.E. IMAP server holds one connection for each user, and at least 2 files open on average. How many users will be running IMAP clients and connecting simultaneously. (Now-days it is usually 85-95%). Since you wish to have 5000 users, this would translate into a maxusers=4250-4750. This will in turn increase nfiles, nproc, ninode, and more....

Hope it helps. (kernels are one thing that SAM is very good at!)

Shannon