I agree with Mithun's response. I would add that Kernel 2.4 onwards has QoS
built in; this needs a compile, however. Userspace tool called IPTABLE can be
used to achieve QoS; however, on a dialup no appreciable gain will be
achieved. The only gains that a human being can perceive (say whilst using a
browser) is when you have bandwith of 256Kbps and above.
I maybe incorrect but almost every ISP (india and abroad) considers it their
mandate to be "pipe providers" rather than bandwidth restricters; some ISPs do
try to filter out traffic(eg. obscene content) but have usually failed rather
than succeeded. Similarly, on routers (standard bandwidth checking equipment
for ISPs) the more rules that one adds to the QoS the more "perceived"
slowness in traffic movement is observed -- thus, a smart ISP will generally
not 'fiddle' too much with any restriction rules in their QoS lest they get
blamed for 'bottlenecks' in the global traffic movement.
Hope this is useful. You can get more info from a couple of the original MRTG
(Multiple Router Traffic Graph) folks.
Regards,
RKA
>===== Original Message From Mithun Bhattacharya <[EMAIL PROTECTED]>
=====
>Robins Tharakan wrote:
>
>>
>> hi guys,
>>
>> for once, my system is working fine, and this question is only for info
>> sake..! ;)
>>
>> i have a modem(56k).. bandwidth is limited(obviously..!)
>>
>> can i somehow place any download, to a "low priority" task... so that my
>> browsing can go on in the meanwhile ?? i mean, does any ISP in delhi
>> provide such "priority" measures ??
>
>
>
>
>What you are looking for is QOS (Quality of service) which unfortunately
>is not supported in the usual distro's. It is usually present in a RTOS
>(Real Time OS).
>
>Other than that when two applications are requesting data the throughput
>gets divided equally over time. The problem with surfing is that you
>usually end up sending small requests over time and the throughput
>doesnt get time to balance out. This causes your exteneded period of
>download to get higher bandwidth. Ofcourse if you start two downloads
>you will notice that they start using the same amount of bandwidth after
>sometime - though initially the first one will be consuming a larger
>share of the bandwidth.
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