Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 18 Jan 2010 08:29:48 -0800
From:      Norbert Papke <npapke@acm.org>
To:        freebsd-stable@freebsd.org
Subject:   Re: ZFS performance degradation over time
Message-ID:  <201001180829.48126.npapke@acm.org>
In-Reply-To: <7346c5c61001171521w1ca4738w98e8fcca24643cda@mail.gmail.com>
References:  <7346c5c61001030842r7dc76199y51e4c1c90a3eea6e@mail.gmail.com> <7346c5c61001091706m45a3a2a5k3ca8bb0c4bec5ea8@mail.gmail.com> <7346c5c61001171521w1ca4738w98e8fcca24643cda@mail.gmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
On January 17, 2010, Garrett Moore wrote:
> I upgraded my system to 8GB of ram to see if that would help. It hasn't
>  made much of a difference. After having rTorrent running for a while, my
>  performance again tanked. Around 6.5GB of memory was showing as 'Active'
>  according to top.

6.5GB of "active" memory seems to imply that a user process is growing or a 
large number of user processes are being created.  I would expect ZFS's cache 
to increase the size of "wired" memory.

Sorry, I have not followed this thread closely.  Are you sure that the 
degradation is ZFS related?  Could it be caused by, for instance, a userland 
memory leak?  What happens to active memory when you restart rtorrent?

Cheers,

-- Norbert Papke.
   npapke@acm.org

http://saveournet.ca
Protecting your Internet's level playing field



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201001180829.48126.npapke>