Re: Rm performance issue

[Bauke Jan Douma]

Ken Naim wrote on 26-09-07 19:19:
> We are using ext3 on top of LVM on IBM SAN. I don't know the SAN hardware
> specifics, although I have been trying to squeeze this info out of the
> client for a while. 
>
> As for bad io experiences, our core production system use raw devices for
> our databases so we don't have the same issue(s), this is our production
> reporting system that gets cloned over nightly. So the process removes all
> the existing files and then writes new versions of them from a backup onto a
> file system. I have noticed the poor io performance since I came onsite but
> the unix team keeps saying everything is fine. This rm issue is causing the
> database clone process to exceed its allocated downtime window so I thought
> I'd start there.
>
> If anyone can point me to any specific information on tuning ext3 file
> system I'd appreciate it. I am googling it now.
>
> Thanks much for the help,
> Ken

Why remove them in the first place?
And, although I'm not that familiar with it, isn't /rsync/
better tuned to this kind of process?

bjd