Re: performance of rsyncrypto

[Shachar S. <sh...@sh...>]

海峰 黄 wrote:
> hi:
> I just found the rsyncrypto project recently, and I use it to encrypt
> my own server's database, and thenrsyncto another place. it's a really
> good project.
>
> I think the encryption strength is enough for me, but the speed of the
> rsyncrypto is only 5MB/s in my case. my database is around 50GB, so it
> should cost few hours to encrypt the database file.
> Is the speed 5MB/s normal? my PC's performance is quite good. If it's
> normal, the openssl AES cause it? or the gzip --rsyncable cause it?
What platform are you running rsyncrypto on? The Windows performance is
not as good as the Linux performance, mainly due to the multi-process
orientation of the program (data passes between the encryption and the
compression on a pipe).

There are several causes to the performance issues in rsyncrypto. First,
rsyncrypto only utilizes about 1.5 CPUs, so many multi cores today are
under-utilized by rsyncrypto. We are also calling the AES encryption one
block at a time, which might further be non-optimal.

Shachar

-- 
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com