Cache size of the hard drive?
Vincent Trouilliez
vincent.trouilliez at modulonet.fr
Sat May 31 19:57:02 UTC 2008
On Sat, 31 May 2008 15:14:41 -0400
"Qiuli Han" <ivyharry at gmail.com> wrote:
> I am trying to see how much cache does my hard drive have. I installed
> hwinfo, but it only gives me some hardware vendor information and system
> location information.
>
> Is there anyway I can see my disk's cache size?
>
> running 8.04, hard disk is: WDC WD3200KS-00P (as per hwinfo)
Hi,
no need to install extra software ;-)
You can just use hdparm, here is an example on my hard drive
(replace sda with the relevant device name of your own drive of course).
-----------------------------
$ sudo hdparm -i /dev/sda
[sudo] password for vincent:
/dev/sda:
Model=SAMSUNG HD502IJ , FwRev=1AA01110,
SerialNo=S13TJDWQ412337 Config={ Fixed }
RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
BuffType=DualPortCache, BuffSize=16384kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7
--------------------------------
My drive has 16MB of cache, it is described above as "BuffSize=16384kB".
You can also use hdparm -I (upper case 'i') to display even more
information about your drive.
Just run "man hdparm" to see all the options available ;-)
--
Vince
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