WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

RE: [Xen-users] IDE Disc Performance problems with Xen3-unstable

To: <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] IDE Disc Performance problems with Xen3-unstable
From: "Michael Lang" <Michael.Lang@xxxxxxxxxx>
Date: Sun, 5 Jun 2005 18:18:53 +0200
Delivery-date: Mon, 06 Jun 2005 08:40:15 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <A95E2296287EAD4EB592B5DEEFCE0E9D28207B@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcVpsUz6vC91OivgRmKyNaecjzy7SgAGspBgAAdPCQA=
 

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ian Pratt
> Sent: Sonntag, 05. Juni 2005 14:49
> To: Michael Lang; xen-users@xxxxxxxxxxxxxxxxxxx
> Cc: ian.pratt@xxxxxxxxxxxx
> Subject: RE: [Xen-users] IDE Disc Performance problems with 
> Xen3-unstable
> 
>  
>  
> > ive encountered performance problems with Xen3-unstable and a
> > raid5 with 5 120Gb  Maxtor IDE discs (1 Spare). After testing in 
> > different Kernels i also noticed that 'normal' IDE Disc 
> access is very 
> > slow
> 
> If you're using our 2.4.6.11.11-xen0 kernel, have you checked 
> the correct driver for your IDE controller is compiled in?
> 
thanks, seems that i missed this one :)

Raid5 Discs
# bonnie -d . -s 100 -v 5 -p 2
Bonnie: Warning: You have 500MB RAM, but you test with only 100MB datasize!
Bonnie:          This might yield unrealistically good results,
Bonnie:          for reading and seeking and writing.
Bonnie 1.4: File './Bonnie.5568', size: 104857600, volumes: 5
Writing with putc()...         done:  24393 kB/s  77.3 %CPU
Rewriting...                   done:  16383 kB/s  10.1 %CPU
Writing intelligently...       done:  40455 kB/s  22.7 %CPU
Reading with getc()...         done:  23184 kB/s  60.9 %CPU
Reading intelligently...       done:  52382 kB/s  17.8 %CPU
Seek numbers calculated on first volume only
Seeker 1...Seeker 2...start 'em...done...done...
              ---Sequential Output (nosync)--- ---Sequential Input-- --Rnd
Seek-
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k
(02)-
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU   /sec
%CPU
server 5* 100 24393 77.3 40455 22.7 16383 10.1 23184 60.9 52382 17.8  289.5
0.8


Physical Disc
# bonnie -d . -s 100 -v 5 -p 2
Bonnie: Warning: You have 500MB RAM, but you test with only 100MB datasize!
Bonnie:          This might yield unrealistically good results,
Bonnie:          for reading and seeking and writing.
Bonnie 1.4: File './Bonnie.5582', size: 104857600, volumes: 5
Writing with putc()...         done:  35985 kB/s  96.8 %CPU
Rewriting...                   done:  13909 kB/s   8.2 %CPU
Writing intelligently...       done:  46646 kB/s  19.6 %CPU
Reading with getc()...         done:  18230 kB/s  50.0 %CPU
Reading intelligently...       done:  39141 kB/s   9.3 %CPU
Seek numbers calculated on first volume only
Seeker 1...Seeker 2...start 'em...done...done...
              ---Sequential Output (nosync)--- ---Sequential Input-- --Rnd
Seek-
              -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k
(02)-
Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU   /sec
%CPU
server 5* 100 35985 96.8 46646 19.6 13909  8.2 18230 50.0 39141  9.3  201.2
0.6

> Ian
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

<Prev in Thread] Current Thread [Next in Thread>