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List:       opensolaris-storage-discuss
Subject:    Re: [storage-discuss] tcp_keepalive_interval and iscsi
From:       "dave johnson" <dj4904 () hotmail ! com>
Date:       2007-05-23 17:05:57
Message-ID: BAY123-DAV49A2E5DFCC36613A3703CC8350 () phx ! gbl
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ps- I wouldn't ever consider setting it to less than about 15 min, and never 
close to 180s as you would be asking for certain trouble.

-=dave

----- Original Message -----
From: "Vic Engle" <victor.engle@gmail.com>
To: <storage-discuss@opensolaris.org>
Sent: Wednesday, May 23, 2007 6:12 AM
Subject: [storage-discuss] tcp_keepalive_interval and iscsi

> Hi,
>
> Could anyone comment on any recommended TCP tuning specific to the solaris 
> iscsi initiator? The tcp_keepalive_interval default seems to be 2 hours.
>
> [root@skylab--->]ndd -get /dev/tcp tcp_keepalive_interval
> 7200000
>
> Assuming that this parameter is in milliseconds then this works out to 
> 7200 seconds. I believe the sd_io_time default is 60 seconds and can be 
> retried maybe 3 times. If so then does it make sense to have the keepalive 
> interval longer than 180 seconds? If I have multiple network connections 
> to the target and mpxio enabled could I reduce path failover time in the 
> event that I lose a network path be tuning the keepalive interval down to 
> 60 seconds or shorter?
>
> Thanks,
> Vic
>
>
> This message posted from opensolaris.org
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> storage-discuss@opensolaris.org
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> 
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