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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">On your point 2.
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">An NFS mount is still transferring data over the network so bandwidth is still a concern. True enough if you do rsync from local physical drive mount to NFS
mount locally you’d get little benefit (and probably some performance loss) from doing compression in rsync. However, it seems it would be more to the point to suggest doing the rsync to the host that is sharing out the NFS filesystem in such a case.
(Of course point 1 obviates point 2 anyway but I thought it worth mentioning for complete detail.)<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ale-bounces@ale.org [mailto:ale-bounces@ale.org]
<b>On Behalf Of </b>Brian Mathis<br>
<b>Sent:</b> Wednesday, August 28, 2013 12:00 PM<br>
<b>To:</b> Atlanta Linux Enthusiasts<br>
<b>Subject:</b> Re: [ale] rsync<o:p></o:p></span></p>
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<p class="MsoNormal">Compression won't help for 2 reasons:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">1) Image data is already compressed<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">2) It sounds like you're syncing between local mounts, in which case the data would be uncompressed before writing to the destination, which is the local mount, which then sends it over the network. I hope
rsync is smart enough to ignore the compression option when syncing between local sources.<o:p></o:p></p>
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<p class="MsoNormal">Compression is only going to help if you're syncing between 2 separate machines and the data is being transferred over the network by rsync itself -- not when using a network file system.<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"MS Mincho"">❧</span> Brian Mathis<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Aug 28, 2013 at 9:40 AM, Edward Holcroft <<a href="mailto:eholcroft@mkainc.com" target="_blank">eholcroft@mkainc.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">I am rsyncing a many files, mostly photos from an EBS volume to an S3 bucket (locally mounted using FUSE) on AWS.<o:p></o:p></p>
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<p class="MsoNormal">Given that it's primarily photographic data (jpg), is it still a good idea to use compression (z- option), or will I not gain any real benefit by trying to compress jpegs?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Alternately, if anyone has a better way of getting 600GB of data from EBS to S3, please let me know.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">ed<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#888888"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="hoenzb"><span style="color:#888888">-- </span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#888888">Edward Holcroft | Madsen Kneppers & Associates Inc.<br>
3020 Holcomb Bridge Rd. NW | Norcross, GA 30071<br>
O <a href="tel:%28770%29%20446-9606" target="_blank">(770) 446-9606</a> | M <a href="tel:%28770%29%20630-0949" target="_blank">
(770) 630-0949</a></span><o:p></o:p></p>
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</span><span class="hoenzb"><span style="font-family:"Arial","sans-serif";color:#888888">MADSEN, KNEPPERS & ASSOCIATES USA, MKA Canada Inc. WARNING/CONFIDENTIALITY NOTICE: This message may be confidential and/or privileged. If you are not the intended recipient,
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