On Tue, Oct 18, 2011 at 9:37 AM, Alex Crow <ac...@integrafin.co.uk> wrote: > Hi, > > We have set up a backup server that uses encryption in the File Daemon. > However we find it is really slow, in fact we are only getting about > 80Mbps (megabits, not -bytes) throughput while running 4 backup threads. > This is backing up from an NFS-connected disk backup host that can > easily saturate a 1Gbps link when I just dd the contents of a large file > to /dev/null on the backup server. It's actually taking us nearly a week > now to do a fortnightly backup of 16TB. > > I've noticed that crypto cards from Exar are supported by OpenSSL and > seen to provide support for AES-CBC. From a previous message on this list: > > http://adsm.org/lists/html/Bacula-users/2010-04/msg00232.html > > it seems someone looked at patching to support offload, however I cannot > find any outcome from this. > > If it is supported in any way, I'd be happy to know. If not, what would > be the best way about getting it implemented?
I'd want to be pretty sure its going to help before doing this. On my (somewhat aged) development machine, OpenSSL can do AES-128 CBC at 55 MB/s (bytes, not bits), so it doesn;t sound like crypto is necessarily your bottleneck. Also, crypto "accelerators" rarely do in my experience. > > Best regards > > Alex > > -- > This message is intended only for the addressee and may contain > confidential information. Unless you are that person, you may not > disclose its contents or use it in any way and are requested to delete > the message along with any attachments and notify us immediately. > > "Transact" is operated by Integrated Financial Arrangements plc > Domain House, 5-7 Singer Street, London EC2A 4BQ > Tel: (020) 7608 4900 Fax: (020) 7608 5300 > (Registered office: as above; Registered in England and Wales under > number: 3727592) > Authorised and regulated by the Financial Services Authority (entered on > the FSA Register; number: 190856) > > > ------------------------------------------------------------------------------ > All the data continuously generated in your IT infrastructure contains a > definitive record of customers, application performance, security > threats, fraudulent activity and more. Splunk takes this data and makes > sense of it. Business sense. IT sense. Common sense. > http://p.sf.net/sfu/splunk-d2d-oct > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > ------------------------------------------------------------------------------ Get your Android app more play: Bring it to the BlackBerry PlayBook in minutes. BlackBerry App World™ now supports Android™ Apps for the BlackBerry® PlayBook™. Discover just how easy and simple it is! http://p.sf.net/sfu/android-dev2dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
