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Thread Speeding things up
Tue, Oct 2 2007 5:14 AMPermanent Link

Having read all the reviews, the SSDs seem to be blazingly fast on read,
and quite poor on write. Thus if you are writing in your database, you may
see little benefit. If you are mainly reading, then they'll whizz.

It struck me that the answer for the manufacturers is to put in a few meg
of cache ram for the writing. It would take the writes quickly and store
it while the flash takes the age to actually write. For many applications,
that would be enough to take a load of updates and move on, but obviously
some may do larger writes than the cache, or too fast, and then they'd
find the performance penalty. But the majority would simply find the disk
was like a ram drive.

/Matthew Jones/
Tue, Oct 2 2007 5:53 AMPermanent Link

=?iso-8859-1?Q?Thomas_Eg_J=F8rgensen?=
"Frans van Daalen" <Account@is.invalid> skrev i en meddelelse
news:4D7F65D1-D861-4DCD-B299-01CBFE4480FE@news.elevatesoft.com...
>> Anyways, i've timed some of our "heaviest" software, first on normal
>> SCSI drives and then on the SSD...but...no significant
>> difference...so no bottleneck in the disks with our DBISAM
>> software...
>>
>> Anyone wanna try anything? I have a freshly installed Dell dimension
>> 520 with 3Ghz Pentium4D with 2Gbyte of memory and then finally
>> 16Gbyte SSD disk....with Vista installed...
>>
> What is your definition on "normal" scsi? what disk which interface?

I've attached two screenshots taken from my workstation, one from the
SCSI(RAID1 with the OS running on it) and the other from the SSD disk...

I don't know the exact disk model for the scsi disks...

/*Thomas



Attachments: ssd.JPG scsi.JPG
Tue, Oct 2 2007 7:35 AMPermanent Link

"Frans van Daalen"

"Thomas Eg Jørgensen" <thomas@hest.notaplan.com> wrote in message
news:7F7B9A52-79C9-4FF2-A4F8-26811E3CF4B1@news.elevatesoft.com...
> "Frans van Daalen" <Account@is.invalid> skrev i en meddelelse
> news:4D7F65D1-D861-4DCD-B299-01CBFE4480FE@news.elevatesoft.com...
>>> Anyways, i've timed some of our "heaviest" software, first on normal
>>> SCSI drives and then on the SSD...but...no significant
>>> difference...so no bottleneck in the disks with our DBISAM
>>> software...
>>>
>>> Anyone wanna try anything? I have a freshly installed Dell dimension
>>> 520 with 3Ghz Pentium4D with 2Gbyte of memory and then finally
>>> 16Gbyte SSD disk....with Vista installed...
>>>
>> What is your definition on "normal" scsi? what disk which interface?
>
> I've attached two screenshots taken from my workstation, one from the
> SCSI(RAID1 with the OS running on it) and the other from the SSD disk...
>
> I don't know the exact disk model for the scsi disks...
>
> /*Thomas
>
mhhh... the ssd performance is great. Do you have any time to perform the
test Tim was proposing?

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