Re: [Veritas-bu] Destaging going slow
2010-06-25 07:16:23
On Thu, Jun 24, 2010 at 10:19 PM, WALLEBROEK Bart <Bart.WALLEBROEK AT swift DOT com> wrote:
Even when we fully format the DSSU disk and we then run 1 backup job to this disk and directly afterwards we duplicate it to tape we get these speeds (35-40MB/sec). So at that time no fragmentation at all is involved.
We saw the same thing. Again, a dd of the file to tape went fast. A destage of the same file to the same tape drive went slow. This was repeatable on multiple Solaris and Windows servers. It's not a disk subsystem configuration or load issue. If it was fragmentation or a raid configuration issue, the dd should also have been slow.
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- Re: [Veritas-bu] Destaging going slow, WALLEBROEK Bart
- Re: [Veritas-bu] Destaging going slow, Martin, Jonathan
- Re: [Veritas-bu] Destaging going slow, WALLEBROEK Bart
- Re: [Veritas-bu] Destaging going slow,
Ed Wilts <=
- Re: [Veritas-bu] Destaging going slow, Martin, Jonathan
- Re: [Veritas-bu] Destaging going slow, Conner, Neil
- Re: [Veritas-bu] Destaging going slow, Martin, Jonathan
- Re: [Veritas-bu] Destaging going slow, WALLEBROEK Bart
- Re: [Veritas-bu] Destaging going slow, Mark Phillips
- Re: [Veritas-bu] Destaging going slow, Martin, Jonathan
- Re: [Veritas-bu] Destaging going slow, Ed Wilts
- Re: [Veritas-bu] Destaging going slow, Lightner, Jeff
- Re: [Veritas-bu] Destaging going slow, Martin, Jonathan
- Re: [Veritas-bu] Destaging going slow, Lightner, Jeff
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