Re: ~5 percent kernel performance loss in the last 3 weeks

To: tech-kern%netbsd.org@localhost, port-amd64%netbsd.org@localhost
Subject: Re: ~5 percent kernel performance loss in the last 3 weeks
From: David Holland <dholland-tech%netbsd.org@localhost>
Date: Thu, 5 Dec 2013 18:19:04 +0000

On Wed, Dec 04, 2013 at 02:09:49PM +0100, Christoph Badura wrote:
 > > After updating my -current kernel from 6.99.24 to 6.99.27 so I could
 > > commit my ubsec(4) changes I noticed that under 6.99.27 I get between
 > > 3 and 8 percent less throughput on accelerated crypto ops.
 > 
 > I was able to pin this down on the pcu/fpu changes.  A kernel from just
 > before that change doesn't have the performance loss.

...so they both didn't work and were slow? oy...

-- 
David A. Holland
dholland%netbsd.org@localhost

References:
- ~5 percent kernel performance loss in the last 3 weeks
  - From: Christoph Badura
- Re: ~5 percent kernel performance loss in the last 3 weeks
  - From: Christoph Badura

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