Bill Davidsen said: (by the date of Wed, 06 Feb 2008 13:16:14 -0500)
> Janek Kozicki wrote:
> > Justin Piszcz said: (by the date of Tue, 5 Feb 2008 17:28:27 -0500
> > (EST))
> > writing on raid10 is supposed to be half the speed of reading. That's
> > because it must write to both mirrors
Janek Kozicki wrote:
writing on raid10 is supposed to be half the speed of reading. That's
because it must write to both mirrors.
I am not 100% certain about the following rules, but afaik any raid
configuration has a theoretical[1] maximum read speed of the combined speed of
all disks in th
On Tue, 5 Feb 2008, Keld Jørn Simonsen wrote:
On Tue, Feb 05, 2008 at 05:28:27PM -0500, Justin Piszcz wrote:
Could you give some figures?
I remember testing with bonnie++ and raid10 was about half the speed
(200-265 MiB/s) as RAID5 (400-420 MiB/s) for sequential output, but input
was clo
On Tue, Feb 05, 2008 at 05:28:27PM -0500, Justin Piszcz wrote:
>
>
> >Could you give some figures?
>
> I remember testing with bonnie++ and raid10 was about half the speed
> (200-265 MiB/s) as RAID5 (400-420 MiB/s) for sequential output, but input
> was closer to RAID5 speeds/did not seem affe
Justin Piszcz said: (by the date of Tue, 5 Feb 2008 17:28:27 -0500 (EST))
> I remember testing with bonnie++ and raid10 was about half the speed
> (200-265 MiB/s) as RAID5 (400-420 MiB/s) for sequential output,
writing on raid10 is supposed to be half the speed of reading. That's
because it
On Tue, 5 Feb 2008, Keld Jørn Simonsen wrote:
On Tue, Feb 05, 2008 at 11:54:27AM -0500, Justin Piszcz wrote:
On Tue, 5 Feb 2008, Keld Jørn Simonsen wrote:
On Thu, Jan 31, 2008 at 02:55:07AM +0100, Keld Jørn Simonsen wrote:
On Wed, Jan 30, 2008 at 11:36:39PM +0100, Janek Kozicki wrote:
K
On Tue, Feb 05, 2008 at 11:54:27AM -0500, Justin Piszcz wrote:
>
>
> On Tue, 5 Feb 2008, Keld Jørn Simonsen wrote:
>
> >On Thu, Jan 31, 2008 at 02:55:07AM +0100, Keld Jørn Simonsen wrote:
> >>On Wed, Jan 30, 2008 at 11:36:39PM +0100, Janek Kozicki wrote:
> >>>Keld Jørn Simonsen said: (by the
On Tue, 5 Feb 2008, Keld Jørn Simonsen wrote:
On Thu, Jan 31, 2008 at 02:55:07AM +0100, Keld Jørn Simonsen wrote:
On Wed, Jan 30, 2008 at 11:36:39PM +0100, Janek Kozicki wrote:
Keld Jørn Simonsen said: (by the date of Wed, 30 Jan 2008 23:00:07 +0100)
All the raid10's will have double
On Thu, Jan 31, 2008 at 02:55:07AM +0100, Keld Jørn Simonsen wrote:
> On Wed, Jan 30, 2008 at 11:36:39PM +0100, Janek Kozicki wrote:
> > Keld Jørn Simonsen said: (by the date of Wed, 30 Jan 2008 23:00:07
> > +0100)
> >
>
> All the raid10's will have double time for writing, and raid5 and rai
Janek Kozicki wrote:
Hello,
Yes, I know that some levels give faster reading and slower writing, etc.
I want to talk here about a typical workstation usage: compiling
stuff (like kernel), editing openoffice docs, browsing web, reading
email (email: I have a webdir format, and in boost mailing l
Keld Jørn Simonsen said: (by the date of Thu, 31 Jan 2008 02:55:07 +0100)
> Given that you want maximum thruput for both reading and writing, I
> think there is only one way to go, that is raid0.
>
> All the raid10's will have double time for writing, and raid5 and raid6
> will also have doub
On Wed, Jan 30, 2008 at 11:36:39PM +0100, Janek Kozicki wrote:
> Keld Jørn Simonsen said: (by the date of Wed, 30 Jan 2008 23:00:07 +0100)
>
> > Teoretically, raid0 and raid10,f2 should be the same for reading, given the
> > same size of the md partition, etc. For writing, raid10,f2 should be
Keld Jørn Simonsen said: (by the date of Wed, 30 Jan 2008 23:00:07 +0100)
> Teoretically, raid0 and raid10,f2 should be the same for reading, given the
> same size of the md partition, etc. For writing, raid10,f2 should be half the
> speed of
> raid0. This should go both for sequential and ra
On Wed, Jan 30, 2008 at 07:21:33PM +0100, Janek Kozicki wrote:
> Hello,
>
> Yes, I know that some levels give faster reading and slower writing, etc.
>
> I want to talk here about a typical workstation usage: compiling
> stuff (like kernel), editing openoffice docs, browsing web, reading
> email
Hello,
Yes, I know that some levels give faster reading and slower writing, etc.
I want to talk here about a typical workstation usage: compiling
stuff (like kernel), editing openoffice docs, browsing web, reading
email (email: I have a webdir format, and in boost mailing list
directory I have 14
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