From owner-freebsd-fs@FreeBSD.ORG  Wed Aug 18 11:15:08 2010
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Message-ID: <4C6BC0BA.9030303@gibfest.dk>
Date: Wed, 18 Aug 2010 13:15:06 +0200
From: Thomas Steen Rasmussen <thomas@gibfest.dk>
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To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
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Cc: freebsd-fs@freebsd.org
Subject: Re: HAST initial sync speed
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On 18-08-2010 13:06, Pawel Jakub Dawidek wrote:
> On Wed, Aug 18, 2010 at 12:10:05AM +0200, Thomas Steen Rasmussen wrote:
>    
>> I performed the tests with md devices like you asked. It seems like using
>> memory disks doesn't make any difference. It is still running at 2-300kBps
>> according to gstat. The network is plenty fast, like I mentioned in an
>> earlier mail, once the initial sync is done, I can reach almost wire speed,
>> over 100 megabytes per second.
>>      
> Could you edit sbin/hastd/proto_common.c and change MAX_SEND_SIZE at the
> begining of the file from 131072 to 32768?
>
> Then do the following:
>
> 	# cd /usr/src
> 	# make buildenv
> 	# cd sbin/hastd
> 	# make&&  make install
> 	^D
>
> And please rerun the test with md(4) devices.
>
>    
Woop!

That certaintly did something, it is currently synching the md
device at almost 80 megabytes/sec according to gstat!

Regards,

Thomas Steen Rasmussen