sony-vaio-z-series team mailing list archive

[Didier Conchaudron <didier@xxxxxxxxxxxxxxx>]

Hi,

I've a VPCZ12M9E with 2 SSD in raid0, I'm also using encrypted lvm on top.
I don't remember what these SSD are.

$ sudo hdparm -tT /dev/mapper/panic-root

/dev/mapper/panic-root:
 Timing cached reads:   6048 MB in  2.00 seconds = 3024.36 MB/sec
 Timing buffered disk reads: 894 MB in  3.01 seconds = 297.39 MB/sec

$ dd if=/dev/zero of=/tmp/output.img bs=16k count=256k
262144+0 records in
262144+0 records out
4294967296 bytes (4,3 GB) copied, 20,0337 s, 214 MB/s

Note that I'm not using any optimization for SSD (such as mounting / with
noatime and using more appropriate kernel scheduler)

Didier

On Sun, 22 May 2011 22:20:44 +0200, darwish@xxxxxxxxx wrote:
> Hi people.
> 
> I ran a little test to know about the performances of the Ricoh SSD
drive
> (of the VAIO Z13) on a Raido0 array.
> 
> Mine has two SSD of 64GB.
> 
> A little benchmark with hdparm
> 
>  for i in 1 2 3; do hdparm -tT /dev/hda; done
> 
> and one other with dd for write test :
> 
>  dd if=/dev/zero of=/tmp/output.img bs=16k count=256k
> 
> tell us the I/O are performing at approx. 245MB/s read and 340 MB/s
write
> 
> Thisis a very minimal test that should be extented further by varrying
> file and block size.
> 
> It would be very intersting to know the performances of other
> configurations (raid0 array of 4 drives and without raid)
> 
> 
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