Re[2]: How do I increase performance on my Redhat server?

[Søren Neigaard <neigaard e-box dk>]

Sunday, December 15, 2002, 11:43:28 PM, Cameron wrote:

CS> On 21:30 15 Dec 2002, U/hyZW4gTmVpZ2FhcmQ= <neigaard e-box dk> wrote:
CS> | The reason I'm looking for performance tuning is my hardware :) I have
CS> | some very old hardware [...]
CS> | [...]
CS> | How and where do I turn off reverse-lookups in Redhat?

CS> It's probably not a single switch, but per-app/service.
CS> It will not add any load to your system.
CS> Which particular reverse lookups are causing you trouble?

Oh ok, for a moment I thought RH did some reverse lookups, sorry about
that :)


CS> | Adding a "-" in the syslog.conf? Huh where do you find information on
CS> | this?? What is this, and what does it do?

CS> "man syslog.conf" should say.

Yes I found it now (somehow I missed it before), but should I have a
space between the "-" and the rest of the line or not? I'm asking just
because I don't know if I would break anything if I just tried, and I
also would not know if it worked (don't know how to test if it
helped).

CS> | man mount gives me this:
CS> | 
CS> |   noatime Do  not  update  inode  access  times on this file system
CS> |           (e.g, for faster access on the news  spool  to  speed  up
CS> |           news servers).
CS> | 
CS> | This sounds greath, but it does not say if there is any trade offs.
CS> | I'm absolutely no filesystem expert, so please explain it to me :)

CS> About the only thing this will affect is mail notification.  Most Bifflike
CS> programs poll your mailbox file (/var/spool/mail/your-login) regularly,
CS> and if the modify time is more recent than the access time infers that
CS> you have new email.

CS> In short, you won't miss this at all. I run with noatime active on most
CS> things.

noatime added, thanks :)

Best regards
Søren