Re: [Bacula-users] Network performance
2010-08-11 12:15:34
>
> I had to disable the Maximum Network Buffer Size in the mean time,
> coincidence or not the director started throwing out "unknown errors"
> while connecting to storage, so this test is run with default buffer
> sizes (which shouldn't be a problem - I got 91-93% of the max link
> speed with iperf using default buffer sizes)
>
> This test:
> * Uses TLS encryption [encrypted comms]
> * Uses PKI encryption [encrypted backup data]
> * Does not use compression
>
> I don't think TLS/PKI is the cause - there's plenty of CPU% while it's
> running. Could investigate this further.
>
are you sure PKI (data encryption) is not the bottleneck?
IMHO PKI is single-threaded (as gzip compression is) and can just use one
processor (or one core of a multi-core processor). the "plenty of CPU%"
could be the other cores which cannot be used to do encryption. on linux,
start top, press "1" and you will get stats of every core.
- Thomas
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