zfs discuss - Mar 2007 - Fw: Re: Is there any performance problem with hard links in ZFS?

----- Forwarded by Wade Stuart/FALMSP/USA/NA/FALLON on 03/26/07 11:30 AM
-----

Wade Stuart/FALMSP/USA/NA/FALLON wrote on 03/26/2007 11:02:08 AM:
> zfs-discuss-bounces at opensolaris.org wrote on 03/26/2007 10:58:07 AM:
>
> > i have tested links performance. and i have got such results:
> > with hardlinks - no problems, reading of 50000 files one million
> > times takes 38 seconds
> > in case with symlinks is another situation - reading of 50000
> > files(through symlinks) one million times takes 3,5 minutes.
> > Is this OK? Is it normal that symlinks in so many times slower
> than hardlinks?
> >
Sorry did not copy list,
>
> Yes,  I have seen this on vxfs and ufs -- although not this drastic
> of a slowdown (on vxfs).  How did you layout your test files exactly?
> -Wade
Also,  when you say read are you talking stat()?