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Re: ITS#3835 Lightweight Listener Thread
John Morrissey <email@example.com> wrote on 08/01/2005 03:34:27 PM:
> First off, thanks for your work on this, Sang-Seok. It will be a big
> I've started running the lightweight listener code with
> (7 July) on one host in our LDAP cluster. Average CPU consumption for
> listener thread has dropped from ~45% of one CPU to ~35% of one CPU (a
> drop in CPU consumption).
Could you elaborate on incoming request characteristics of the host.
- H/W spec of the host.
- the number of concurrent connections.
- incoming request types: search, modify, add, etc.
- incoming request pattern: how many requests per single bind().
I think the 35% CPU consumption of the thread is too much.
In my test environment, even with 10k active concurrent connections, the
listener(W the patch)
thread CPU consumption was less than roughly 10%.
> I suspect I'm not seeing bigger gains because I have tcpwrappers and
> DNS resolution disabled, so the only things being offloaded to other
> are connection_read() and connection initialization.
I am also working an another patch which aims at the listener thread load
We can collaborate together to see if the patch will work.