[ofw] Doing queries on subnet every 30 seconds

[Tzachi Dar]

The new algorithm can be implemented later (if you will tell us exactly what it is).

Currently we are only talking about a change in the default.

Thanks
Tzachi

> -----Original Message-----
> From: Hal Rosenstock [mailto:hal.rosenstock at gmail.com]
> Sent: Tuesday, May 03, 2011 9:20 PM
> To: Fab Tillier
> Cc: Tzachi Dar; ofw at lists.openfabrics.org
> Subject: Re: [ofw] Doing queries on subnet every 30 seconds
> 
> On Tue, May 3, 2011 at 2:15 PM, Fab Tillier <ftillier at microsoft.com> wrote:
> > Hal Rosenstock wrote on Mon, 2 May 2011 at 05:09:46
> >
> >> On Mon, May 2, 2011 at 4:54 AM, Tzachi Dar <tzachid at mellanox.co.il> wrote:
> >>> It seems that currently we have code that scans for srp targets every 30
> >>> seconds (and creates qpr).
> >>>
> >>> See the function __ioc_query_sa for more details.
> >>>
> >>
> >> What is __ioc_query_sa doing ? Where is this code found ? Is this an
> >> SA query ? Which one ?
> >
> > Basically, if I recall correctly, it queries the SM for all port records and
> all path records, does a join of the tables to get all paths to ports that
> have the IOC bit set, and then sends DM MADs to discover I/O devices.
> 
> There is a much better optional algorithm for this with more recent SMs.
> 
> -- Hal
> 
> > -Fab
> >
> >>
> >> -- Hal
> >>
> >>>
> >>> When the cluster gets big it creates load on the sm.
> >>>
> >>>
> >>>
> >>> Is there any objection to disable it by default?
> >>>
> >>>
> >>>
> >>> Thanks
> >>>
> >>> Tzachi
> >>>
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> >