Re: apache-mpm-prefork debian perfomance tuning
Thankyou so much jose and Roberto for your Responses :-)
On 3/27/07, Roberto C. Sánchez <roberto@connexer.com> wrote:
On Tue, Mar 27, 2007 at 03:03:11PM +0530, Siju George wrote:
> Hi,
>
> Just wondering for what amount of Load the default configuration of
> apache2-mpm-prefork in Sarge is tuned?
>
> Will it server well about 1,000 users simultaneously?
>
It depends. There are so many variables that it is not even funny. You
probably want to investigate thouroughly what it is that you are trying
to do, figure out what packages you will be using and then look at the
content that you will be serving. Only then will you even begin to have
enough information to make something resembling a guess that is within
an order of magnitude.
Yup
This one is going to be e-learning website.
Where people (anyone) can come register for free and upload their
content ( turtorials media at most 50 MB per user )
And others can come and download the and use them for free.
No Idea how many users will be there exactly :-(
What i am concerned is about the
http://en.wikipedia.org/wiki/Slashdot_effect
users are expected from
http://digg.com/
http://www.techcrunch.com/
http://www.solutionwatch.com/
i also went through
http://tech.cybernetnews.com/2006/07/14/cybernotes-the-analysis-of-a-digg-effect-4x-in-10-days/
http://blogs.tech-recipes.com/davak/2005/11/06/digg-effect-the-top-10-things-webmasters-should-know/
So i would like to prepare for that.
The server i have is
======================================================================
1x Dual-Core Opteron 2210 (1.8GHz) on a Dual CPU Motherboard
2x 2GB RAM/PC3200 (4GB Total)
2x Onboard GbE LANs
CD-ROM
1U 2 Hot-Swap Bays Chassis & Mounting Brackets
x Dual Channel SATA RAID Adapter
2x 500GB 7200 RPM SATA RE Hot-Swap HDD's
=========================================================================
So I hope I should be Installing ( right? )
kernel-image-2.6.8-12-amd64-k8-smp - Linux kernel image for version
2.6.8 on AMD64 SMP systems
to harness the full power of the CPU as currently it shows only
==================================================================
Linux websrv-1 2.6.8-11-amd64-generic #1 Thu Jan 11 21:39:50 PST 2007
x86_64 GNU/Linux
# cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 2210
stepping : 2
cpu MHz : 1795.549
cache size : 1024 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext lm
3dnowext 3dnow pni cmpxchg16b
bogomips : 3547.13
TLB size : 1088 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp [4] [5]
# mpstat -P ALL
Linux 2.6.8-11-amd64-generic (tutorom-dbsrv-1) 03/28/2007
03:37:08 AM CPU %user %nice %system %iowait %irq %soft
%idle intr/s
03:37:08 AM all 0.01 0.00 0.02 0.06 0.00 0.00
99.91 1003.62
03:37:08 AM 0 0.01 0.00 0.02 0.06 0.00 0.00
99.91 1003.62
==========================================================================
also it has
==========================================================================
3ware Storage Controller device driver for Linux v1.26.00.039.
scsi0 : Found a 3ware Storage Controller at 0xcc00, IRQ: 16, P-chip: 1.3
scsi0 : 3ware Storage Controller
Vendor: 3ware Model: Logical Disk 0 Rev: 1.2
==========================================================================
Just wondering mdadm can monitor this hardware Raid Controller? is it supported?
I hope to Install LVM and have seperate partitions for
"/var/log" and "/var/www" so I can adjust them if there is any need in future.
What do you suggest use up the whole 500 GB disks or leave some free
Space for later use?
Also
Should I use.
"apache2-mpm-worker" or "apache2-mpm-prefork"?
because
http://www.debianhelp.co.uk/apacheinstall.htm
says "apache-mpm-worker" could be a risk.
Also this will be on PHP5 and will be contacting a MySQL 5.0 Database
Server with the same Specs.
Hope these informations are enough :-)
Please let me know if you need more.
Thankyou so much once again :-)
Kind Regards
Siju
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