Re: ZFS/RAIDZ and SAMBA: abyssimal performance

On Jan 7, 2013, at 1:49 PM, Olivier Cochard-Labb=E9 <olivier@cochard.me> wr=
ote:

> On Mon, Jan 7, 2013 at 11:20 AM, Fleuriot Damien <ml@my.gd> wrote:
>> =

>> =

>> Well perhaps the code to handle auto tuning isn't present in the driver =
itself.
>> =

>> I'm not a huge fan of the idea, I believe it would be rather taxing to i=
mplement all the exceptions and that some could easily be overlooked.
>> =

>> I believe it's better to have a more user-friendly documentation and let=
 users tune the hardware to suit their needs.
>> =

> =

> And why not to provide a "simple" shell script that:
> 1. Collect the detected hardware device list
> 2. Collect the sysctl value
> 3. Popose all tunning tips regarding the detected hardware (including
> RAM/number of CPU/etc=85) and the sysctl value
> =

> This will kept default conservative value and guide the user to tune
> by itself its system.
> =

> Regards,
> =

> Olivier

Tuning isn't simply dependent on your hardware, it also *heavily* depends o=
n what you want to do with your server.

A large database, a fast httpd serving tiny 2kbytes files, or a samba serve=
r have little in common and require different optimizations.

While I understand the motivation behind your idea, I still don't think it =
would be terrific.

However, who am I to stop you ?

Kindly feel free to conceptualize such a script and ask for testers here on=
 the mailing list, I for one would be delighted to help.
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