Sinisa Milivojevic wrote:
>
> Arne Mueller writes:
> > Hi All,
> >
> > Summary: sockets opened by mysql-clients are not closed properly after
> > the client process has been terminated.
> >
> > I'm using mysql-3.23.8-alpha (server running on irix 6.5), the clients
> > run on RadHat Linux 7.
> >
> > When I establish a connection from the client (linux) to the server via
> > the standard mysql-client (that comes with the mysql code), a sockets
> > gets occupied on the client machine. I list the used sockets via the
> > 'socklist' perlscript that comes with RadHat linux (don't know how to
> > list sockets otherwise). After I've exited the mysql-client the socket
> > that was used by mysql on the client site is still there and remains
> > several minutes, without beeing associated with a process (the process
> > has already gone away). I guess the problem may be quite deep inside the
> > client library because I get the same problem when using perl-DBI.
> >
> > This causes some problems on our site, because 50 linux clients talk to
> > a master server (the clients are in a privat network) which runs a redir
> > demon that redirects all traffic to the mysql-server that sites in a
> > different network. The master server keeps quite alot of sockets open,
> > and very often there no more sockets left for new connection (because
> > the old ones are noit closed quick enough).
> >
> > I just wonder whether someone came across this problem before or whether
> > the developers are interested in this problem (I can provide more
> > details if requested). I'd like to see whether there are zombie sockets
> > on the server machine as well but I don't know how to monitor socket
> > usage on an irix machine.
> >
> > thanks for ideas,
> >
> > Arne
> >
>
> Hi!
>
> The above is a known behaviour on Linux, which have probably being
> resolved in 2.4 kernels.
>
> Meanwhile, you can increase maximum number of file descriptors at
> system startup.
>
> Regards,
>
> Sinisa
Thanks for the reply,
I get the same probelm under irix 6.5 (just learned about netstat -a).
After a client running on an irix machine exited it's connection to a
server running on irix, too, the sockets on the client remains for a
while in 'TIME_WAIT' state, whereas the socket on the server is removed
immediately.
This looks more like a more general problem, not like something linux
specific. Someone of our IT people is looking into this in more detail.
I let you know if I have any news on this,
cheers,
Arne
---------------------------------------------------------------------
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
To request this thread, e-mail <[EMAIL PROTECTED]>
To unsubscribe, e-mail <[EMAIL PROTECTED]>
Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
