>
>Even with infinite wire speed, you're bound by the ability of the source server
>to generate the snapshot stream and the ability of the destination server to
>write the snapshots to the media.
>
>Our little servers in-house using ZFS don't read/write that fast when pulling
>snapshot contents of
On Fri, Dec 14 at 9:29, Fred Liu wrote:
We have found mbuffer to be the fastest solution. Our rates for large
transfers on 10GbE are:
280MB/smbuffer
220MB/srsh
180MB/sHPN-ssh unencrypted
60MB/s standard ssh
The tradeoff mbuffer is a little more complicated to script; rs
In my own experiments with my own equivalent of mbuffer, it's well worth
giving the receiving side a buffer which is sized to hold the amount of
data in a transaction commit, which allows ZFS to be banging out one tx
group to disk, whilst the network is bringing the next one across for
it. This
>
> We have found mbuffer to be the fastest solution. Our rates for large
> transfers on 10GbE are:
>
> 280MB/smbuffer
> 220MB/srsh
> 180MB/sHPN-ssh unencrypted
> 60MB/s standard ssh
>
> The tradeoff mbuffer is a little more complicated to script; rsh is,
> well, you know;
Post in the list.
> -Original Message-
> From: Fred Liu
> Sent: 星期五, 十二月 14, 2012 23:41
> To: 'real-men-dont-cl...@gmx.net'
> Subject: RE: [zfs-discuss] any more efficient way to transfer snapshot
> between two hosts than ssh tunnel?
>
>
>
>
>
> I've heard you could, but I've never done it. Sorry I'm not much help,
> except as a cheer leader. You can do it! I think you can! Don't give
> up! heheheheh
> Please post back whatever you find, or if you have to figure it out for
> yourself, then blog about it and post that.
Aha! Gotc
: Freddie Cash
Cc: zfs-discuss
Subject: Re: [zfs-discuss] any more efficient way to transfer snapshot between
two hosts than ssh tunnel?
>Add the HPN patches to OpenSSH and enable the NONE cipher. We can saturate a
>gigabits link (980 mbps) between two FreeBSD hosts using that.
>Without it
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Fred Liu
>
> BTW, anyone played NDMP in solaris? Or is it feasible to transfer snapshot via
> NDMP protocol?
I've heard you could, but I've never done it. Sorry I'm not much help, except
as
>Add the HPN patches to OpenSSH and enable the NONE cipher. We can saturate a
>gigabits link (980 mbps) between two FreeBSD hosts using that.
>Without it, we were only able to hit ~480 mbps on a good day.
>If you want 0 overhead, there's always netcat. :)
980mbps is awesome! I am thinking runnin
On Dec 13, 2012 8:02 PM, "Fred Liu" wrote:
>
> Assuming in a secure and trusted env, we want to get the maximum transfer
speed without the overhead from ssh.
Add the HPN patches to OpenSSH and enable the NONE cipher. We can saturate
a gigabits link (980 mbps) between two FreeBSD hosts using that
.
Fred
From: Adrian Smith [mailto:adrian.sm...@rmit.edu.au]
Sent: 星期五, 十二月 14, 2012 12:08
To: Fred Liu
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] any more efficient way to transfer snapshot between
two hosts than ssh tunnel?
Hi Fred,
Try mbuffer (http://www.maier-komor.de
Hi Fred,
Try mbuffer (http://www.maier-komor.de/mbuffer.html)
On 14 December 2012 15:01, Fred Liu wrote:
> Assuming in a secure and trusted env, we want to get the maximum
> transfer speed without the overhead from ssh.
>
> ** **
>
> Thanks.
>
> ** **
>
> Fred
>
>
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