[Openstack] Load Balancers for Swift Proxy-servers ----why Pound ?

Jay Pipes jaypipes at gmail.com
Mon Sep 19 15:39:20 UTC 2011


On Mon, Sep 19, 2011 at 7:47 AM, Kuo Hugo <tonytkdk at gmail.com> wrote:
> btw , most of articles just using HTTP instead of HTTPS.   Does Pound better
> than Nginx under HTTPS?

FYI, some folks have done some performance testing of Glance with
Swift backends. It was determined that using SSL caused a dramatic
performance degradation (roughly decreased the network I/O throughput
by half, with a queuing behvaiour showing up on GET requests as well.)

The solution was to disable zlib compression in SSL on the Glance API
server box.

There aren't a whole lot of easy ways to do this in OpenSSL 0.9.8, but
you may find the discussion in this article interesting:

http://journal.paul.querna.org/articles/2011/04/05/openssl-memory-use/

Cheers,
jay




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