| From: | "Albe Laurenz" <laurenz(dot)albe(at)wien(dot)gv(dot)at> |
|---|---|
| To: | "Marti Raudsepp *EXTERN*" <marti(at)juffo(dot)org> |
| Cc: | "Merlin Moncure *EXTERN*" <mmoncure(at)gmail(dot)com>, "Heikki Linnakangas *EXTERN*" <heikki(dot)linnakangas(at)enterprisedb(dot)com>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: SSL encryption makes bytea transfer slow |
| Date: | 2011-11-04 08:43:47 |
| Message-ID: | D960CB61B694CF459DCFB4B0128514C20713EBB0@exadv11.host.magwien.gv.at |
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| Lists: | pgsql-performance |
Marti Raudsepp wrote:
>> Disabling OpenSSL compression in the source (which
>> is possible since OpenSSL 1.0.0) does not give me any performance
>> improvement.
>
> If it doesn't give you any performance improvement then you haven't
> disabled compression. Modern CPUs can easily saturate 1 GbitE with
> AES256-encrypted connections. Compression is usually the bottleneck,
> at 20-30 MB/s.
Hmm, my knowledge of OpenSSL is so little that it is well possible that
I did it wrong. I have attached the small patch I used; can you see
where I went wrong?
Yours,
Laurenz Albe
| Attachment | Content-Type | Size |
|---|---|---|
| ssl.patch | application/octet-stream | 620 bytes |
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