BackupPC-users

Re: [BackupPC-users] Backing up many small files

2013-02-06 11:15:47
Subject: Re: [BackupPC-users] Backing up many small files
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Wed, 6 Feb 2013 10:14:23 -0600
On Wed, Feb 6, 2013 at 3:56 AM, Sorin Srbu <sorin.srbu AT orgfarm.uu DOT se> 
wrote:
>>>
>> ??? 7MB/s (that is 7Mbyte/s) is a usable value for a 100Mb/s (that is 100
>> Mbits/s) connection! 100Mb/s translates to 12MB/s, 10Mb/s would be
>> 1.2MB/s...
>>
>> On a 1G network, you can get similar rates as with local hard disk,
>> that is ~100-120MB/s.
>>
>> So on a 100Mb/s-network, the OP can't get higher transfer-rates then 12MB/s.
>> Its the physical limit. 7MB/s is a good value.
>>
>
> Thanks for clearing that up!

But with rsync over ssh, that's not very strictly related to
real-world results.   Except in the case of new files, rsync is only
going to send changes that may take little bandwidth but can trigger a
lot of slow disk activity reconstructing the new copy.   And if your
bandwidth is the limiting factor you can add the -C option to ssh for
compression.

-- 
   Les Mikesell
      lesmikesell AT gmail DOT com

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