samba - Jan 2001 - Number of concurrent connections possible?

Could anyone please tell me if there's a limit on a number of concurrent
connections possible on a SAMBA server being run on a Linux box?

Would there be any data access issues with having approximately 50 
concurrent connections to the SAMBA server? 

Any help is greatly appreciated,
Sergey Shayevich

If it helps, I currently have 500 concurrent connections running on one Samba
server.  I think its limited by the kernel, so about 16,000 under 2.2.x and an
utterly silly number under 2.4.x

Cheers
JG
>>> Sergey Shayevich <sshayevich@bigfoot.com> 01/06/01 04:52am
>>>
Could anyone please tell me if there's a limit on a number of concurrent
connections possible on a SAMBA server being run on a Linux box?

Would there be any data access issues with having approximately 50 
concurrent connections to the SAMBA server? 

Any help is greatly appreciated,
Sergey Shayevich

[On the maximum number of concurrent connections on a Linux/Samba box]
> If it helps, I currently have 500 concurrent connections running on one
Sam> ba server.  I think its limited by the kernel, so about 16,000 under
2.2.x > and an utterly silly number under 2.4.x
You need to be careful with this.  I'm running a Samba server at work
which will serve PCs in various computing labs.  (I work at a
University.)  Because we might ultimately be looking at 600-700
concurrent connections I looked into what the maximum might be, and
found that this is one area where RedHat tweak their kernel.

RedHat:
#define NR_TASKS        2560    
#define MAX_TASKS_PER_USER          2048
#define MIN_TASKS_LEFT_FOR_ROOT      16

Pristine source:
#define NR_TASKS        512
#define MAX_TASKS_PER_USER (NR_TASKS/2)
#define MIN_TASKS_LEFT_FOR_ROOT 4

So, if you're running a large scale Samba server on Linux (and
particularly if you're running RedHat, but I don't know what other
distributions do), and you're running a 2.2.x kernel, then you *must*
check these settings if you're planning on compiling a new kernel.

For reference, these settings are stored in
/usr/src/linux/include/linux/tasks.h 

Note that there is a maximum number of processes under 2.2.x is 4092,
or 4090 you have APM (power management) configured into the kernel.

Martin
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