[ofw] Doing queries on subnet every 30 seconds

[Hal Rosenstock]

On Tue, May 3, 2011 at 2:23 PM, Tzachi Dar <tzachid at mellanox.co.il> wrote:
> The new algorithm can be implemented later (if you will tell us exactly what it is).

Yes (and yes - I will explain).

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

Understood.

-- Hal

> 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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>> >>>
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>