Bob Willard
December 7th 03, 02:03 AM
Ron Miller wrote:
> Hi,
> I have an AMD based system with a 3Ware hardware PCI RAID controller.
> With Sisoft Sandra, the C: drive has a crummy benchmark of only 16-18,000.
> The E: drive is another logical drive on the SAME array (different
> partition), and it benchmarks at a respectable 40,000+.
> I am hoping that someone could give me an explanation of how two different
> logical drives on the same physical drive could benchmark differently, let
> alone radically differently as here. Could the benchmark be affected by
> how much free space is on a drive?
> Thanks,
>
> Ron
>
> System
> Asus A7M266 mobo (AMD northbridge, VIA southbridge)
> AthlonXP 2100+
> Crucial PC2100 256x2
> 3Ware Escalade 6200 PCI RAID controller
> Maxtor DiamondMax Plus 7200rpm 40GB ATA100 x 2 -- RAID 0 with two
> partitions, one drive on each partition:
> C:, the system drive, 8GB Primary partition formatted with FAT32 ( 0.9
> GB free)
> E:, 20GB logical drive on 20GB Extended partition formatted with FAT32
> (11 GB free)
>
> Maxtor 40GB 5400rpm master on IDE 0 FAT32 (benchmarks at 14,700, nearly
> as fast as C: which should be MUCH faster since it's a striped array on a
> hardware RAID controller with 7200 rpm drives.)
> OS Windows XP Pro SP1a with only XP IDE drivers installed
>
>
Sandra is not a HD benchmark. Sandra is a filesystem benchmark, so
almost anything can affect Sandra's results, including fragging,
other concurrent processes, free space, swapfile, indexing, etc.
--
Cheers, Bob
> Hi,
> I have an AMD based system with a 3Ware hardware PCI RAID controller.
> With Sisoft Sandra, the C: drive has a crummy benchmark of only 16-18,000.
> The E: drive is another logical drive on the SAME array (different
> partition), and it benchmarks at a respectable 40,000+.
> I am hoping that someone could give me an explanation of how two different
> logical drives on the same physical drive could benchmark differently, let
> alone radically differently as here. Could the benchmark be affected by
> how much free space is on a drive?
> Thanks,
>
> Ron
>
> System
> Asus A7M266 mobo (AMD northbridge, VIA southbridge)
> AthlonXP 2100+
> Crucial PC2100 256x2
> 3Ware Escalade 6200 PCI RAID controller
> Maxtor DiamondMax Plus 7200rpm 40GB ATA100 x 2 -- RAID 0 with two
> partitions, one drive on each partition:
> C:, the system drive, 8GB Primary partition formatted with FAT32 ( 0.9
> GB free)
> E:, 20GB logical drive on 20GB Extended partition formatted with FAT32
> (11 GB free)
>
> Maxtor 40GB 5400rpm master on IDE 0 FAT32 (benchmarks at 14,700, nearly
> as fast as C: which should be MUCH faster since it's a striped array on a
> hardware RAID controller with 7200 rpm drives.)
> OS Windows XP Pro SP1a with only XP IDE drivers installed
>
>
Sandra is not a HD benchmark. Sandra is a filesystem benchmark, so
almost anything can affect Sandra's results, including fragging,
other concurrent processes, free space, swapfile, indexing, etc.
--
Cheers, Bob