Re: Userspace scheduler?

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Userspace scheduler?
From: Wayne <wayne@xxxxxxxxxxxxxxx>
Date: Thu, 06 Dec 2001 09:10:30 -0800
At 10:49 PM 12/6/2001 +0800, you wrote:

>On Thu, 6 Dec 2001, Julian Anastasov wrote:
>> On Wed, 5 Dec 2001, Lars Marowsky-Bree wrote:
>> > Good morning all,
>> >
>> > would it be possible for LVS to provide special scheduler which asked a
>> > userspace process (maybe via a socket) where to send the connection?
>> >
>> > How much effort would be required for this?
>>       Not sure but I see some bad things: even if we use netlink
>> for such purposes may be we have to enqueue the packets and to dequeue
>> them after the user space has some time to get the decision. The
>It cause my headache while writing content-based scheduler for ktcpvs
>inside the kernel, because it is complicated to specify this kinds of
>rules inside the kernel.

To have the scheduler based on content will force adopting SSL
termination in the LVS box, otherwise, it will not work for all the

>It will be better if we write content-based scheduler for ktcpvs in
>user-space. IMHO, it might be not necessary to write user-space scheduler
>for IPVS, because it doesn't parse the content of packets.
>Dynamic-feedback weight-adaption algorithm will give the scheduler more
>information about the server status, it is simple and fast, and can make
>servers well balanced too. :)
>Best regards,
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