linux-btrfs.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Tobias <tracer@robotech.de>
To: Linux Btrfs <linux-btrfs@vger.kernel.org>
Subject: Extreme slowdown
Date: Thu, 15 Dec 2011 19:49:08 +0100	[thread overview]
Message-ID: <4EEA4124.20907@robotech.de> (raw)

Hi all!

My BTRFS-FS ist getting really slow. Reading is ok, writing is slow and 
deleting is horrible slow.

There are many files and many links on the FS.

# btrfs filesystem df /srv/storage
Data: total=3.09TB, used=3.07TB
System, DUP: total=8.00MB, used=496.00KB
System: total=4.00MB, used=0.00
Metadata, DUP: total=154.88GB, used=70.56GB
Metadata: total=8.00MB, used=0.00

Maybe it's because there is so much Metadata and it needs so many seeks 
on the discs when deleting?

I'd like to delete some of the old Files but its so horrible slow that i 
think its maybe faster to copy all needed Data to a different Disc, 
killing the FS and move the Files back...

The machine is a QuadCore with 8GB RAM. Kernel is "3.1+for-linus".

Any hints how i could speed it up?

Tobias

             reply	other threads:[~2011-12-15 18:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-15 18:49 Tobias [this message]
2011-12-16  2:09 ` Extreme slowdown Liu Bo
2011-12-16  8:51   ` Tobias
2011-12-16  9:11     ` Hugo Mills
2011-12-16  2:19 ` Fajar A. Nugraha
2011-12-16  3:44   ` Chester
2011-12-16  4:15     ` Shyam Prasad N
2011-12-16  9:09       ` Tobias
2011-12-16  9:19         ` Sander
2011-12-16 17:45           ` Tobias

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4EEA4124.20907@robotech.de \
    --to=tracer@robotech.de \
    --cc=linux-btrfs@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).