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Op 01-05-2007 om 15:08 schreef Jiann-Ming Su:
> How many simultaneous tftp connections can tftp-hpa handle? Thanks
> for any info.


unlimited.

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Op 01-05-2007 om 22:19 schreef Geert Stappers:
> Op 01-05-2007 om 15:08 schreef Jiann-Ming Su:
> > How many simultaneous tftp connections can tftp-hpa handle? Thanks
> > for any info.
>
>
> unlimited.


TFTP is a light weight protocol.
If you are expection limits,
expected them elsewhere then in the TFTP deamon of hpa.

If you foresee many simultaneous TFTP connections,
then give your server much CPU power and much memory.
Beware for network switches being bottle necks.


Oh, if you just want to known who is the record holder of simultaneous
TFTP connections, then ask so. Ask also for his/her set-up.

And surely take time to communicate.


Hope this Helps
Geert Stappers

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Geert Stappers wrote:
> Op 01-05-2007 om 15:08 schreef Jiann-Ming Su:
>> How many simultaneous tftp connections can tftp-hpa handle? Thanks
>> for any info.
>
>
> unlimited.
>

... though it should be mentioned that running "tftpd" in "standalone/listen"
mode ("-l" option) is preferred over launching it from [x]inetd.
This might not be the default configuration on all distros that provide
a "tftp-hpa" package.

Furthermore serving "large files" (Windows/Bart PE images) generates
significantly more load than serving "small files" (linux kernels,
initrd images) in addition to the bootloader, e. g. pxelinux.

Axel

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Geert Stappers wrote:
> Op 01-05-2007 om 15:08 schreef Jiann-Ming Su:
>> How many simultaneous tftp connections can tftp-hpa handle? Thanks
>> for any info.
>
> unlimited.
>

Actually, due to the design of the TFTP protocol you're probably limited
to however many local dynamic port numbers you have configured -- about
29,000 in the normal configuration.

-hpa

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Dyks, Axel (XL) wrote:
>
> ... though it should be mentioned that running "tftpd" in "standalone/listen"
> mode ("-l" option) is preferred over launching it from [x]inetd.
> This might not be the default configuration on all distros that provide
> a "tftp-hpa" package.
>

Why?

-hpa

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H. Peter Anvin wrote:
> Dyks, Axel (XL) wrote:
>> ... though it should be mentioned that running "tftpd" in "standalone/listen"
>> mode ("-l" option) is preferred over launching it from [x]inetd.
>> This might not be the default configuration on all distros that provide
>> a "tftp-hpa" package.
>>
>
> Why?

Which part is "why?" refering to?

* standalone is prefered: less overhead
// ... assuming that in the poster's case (xinetd's) security/tcp-wrapper features
// are less important than having maximum performance / mininum latency)

* distro's default config: It's default on gentoo, don't know much about others

Axel

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Dyks, Axel (XL) wrote:
>>>
>> Why?
>
> Which part is "why?" refering to?
>
> * standalone is prefered: less overhead
> // ... assuming that in the poster's case (xinetd's) security/tcp-wrapper features
> // are less important than having maximum performance / mininum latency)
>
> * distro's default config: It's default on gentoo, don't know much about others
>

Given how tftp-hpa works, the extra overhead is negible, and in fact
approaches zero for a busy enough server.

-hpa

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H. Peter Anvin wrote:
> Dyks, Axel (XL) wrote:
>>> Why?
>> Which part is "why?" refering to?
>>
>> * standalone is prefered: less overhead
>> // ... assuming that in the poster's case (xinetd's) security/tcp-wrapper features
>> // are less important than having maximum performance / mininum latency)
>>
>> * distro's default config: It's default on gentoo, don't know much about others
>>
>
> Given how tftp-hpa works, the extra overhead is negible, and in fact
> approaches zero for a busy enough server.

Well, I think it would be interesting to figure out in a large and "busy"
environment, whether there is a difference or not.

Having in mind that someone posted here that launching "tftpd" from "inetd"
didn't work while standalone mode did (I think, this happened on Suse 9.X),
it might be a good idea to get things running in "standalone mode" and try
"[x]inetd mode" later.

Actually I have access to a "perfect test environment" (a customer with about
5000 clients), but I doubt that they will let me "touch" their proprietary
"intel-pxe-tftp" server and use "tftp-hpa" instead.
// Though hpa-tftp is working fine in the test environment and
// pxelinux+kernel+initrd is already used in production
// to install (imaging+sysprep) all Windows XP clients.

:-) Axel


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