Lots of telnet sessions

What does vmstat tell you - are you paging too much?

George



Bill Warner wrote:
>
> Anyone with experience on Linux with large numbers of users telneted in?
> (500+)
>
> 9:23am up 1 day, 8:50, 482 users, load average: 143.52, 87.73, 44.33
>
> typical usage is ~4-5 load
>
> When ever a connection drops from a user the telnetd seems to spin out
> of control for about 2 minutes before finally dieing. Some times one of
> our off site clients with a shacky t1 line drops 100+ users. We are
> keeping track of it with a script that parses a ps -ef and hunts down
> and kills these processes as fast as it can find them. This seems like
> quite a hack to me :)
>
> also,
>
> has anyone seen where a ps will take a long time to run. I know we have
> quite a race condition (that hasn't really affected us that we know of)
> in the way our script runs, because a ps seems to take from 2-5minutes
> to run. This is a system with 2k processes at any one time.
>
> any suggestions would be cool.
>
> Thanks
>
> ps...for the security concerned about telnet running this is all on a
> firewalled lan. the off site connection is a dedicated t1. These
> systems don't send any traffic over the Internet directly. Although not
> great for keeping out inside hackers we are pretty secure from the
> Internet.
>
> --
> Bill Warner
> Unix/Linux Admin.
> Direct Alliance Corporation
>
> Company required stuff:
>
> Contents are Direct Alliance Corporation Confidential
>
> This message is for the designated recipient(s) only and contains
> Direct Alliance Corporation privileged and confidential information.
> If you have received it in error, please notify the sender immediately
> and delete the original. Any other use of this email is prohibited.
>
> ________________________________________________
> See http://PLUG.phoenix.az.us/navigator-mail.shtml if your mail doesn't post to the list quickly and you use Netscape to write mail.
>
> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us
> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss