I was wondering if it makes any sense when making an ext fs on an SDcard to try
to align the erase block of the card with the ext2 group size.
eg assuming a card with a 4KB pages and 4MB erase blocks, try something like
`mkfs.ext3 -b 4096 -g 1024'
Could it offer any speed advantage in garbage co
On Thursday 31 March 2011 08:45:24 Yioryos Asprobounitis wrote:
>
> I was wondering if it makes any sense when making an ext fs on an SDcard
> to try to align the erase block of the card with the ext2 group size.
> eg assuming a card with a 4KB pages and 4MB erase blocks, try something
> like `m
--- On Thu, 3/31/11, Arnd Bergmann wrote:
> From: Arnd Bergmann
> Subject: Re: ext2/3/4 group size
> To: devel@lists.laptop.org
> Cc: "Yioryos Asprobounitis"
> Date: Thursday, March 31, 2011, 3:34 AM
> On Thursday 31 March 2011 08:45:24
> Yioryos Asprobounitis
On Thursday 31 March 2011, Yioryos Asprobounitis wrote:
> I have a very good 2-year old 4GB class 6 Transcend
> a poor 1-year old 4BG class 6 Kingsoton
> and terrible 2-year old 8GB A-data
> Rating is based on iozone data and "terrible" means that I get file corruption
> quite often. Kingston is
--- On Thu, 3/31/11, Arnd Bergmann wrote:
> From: Arnd Bergmann
> Subject: Re: ext2/3/4 group size
> To: "Yioryos Asprobounitis"
> Cc: devel@lists.laptop.org
> Date: Thursday, March 31, 2011, 7:49 AM
> On Thursday 31 March 2011, Yioryos
> Asprobounitis wrote
--- On Thu, 3/31/11, Arnd Bergmann wrote:
> From: Arnd Bergmann
> The Kingston card probably uses a toshiba controller (oemid 0x544d)
[snip]
> The transcend cards I've seen typically use samsung
> controllers (oemid 0x534d),
Here is what I get for my cards:
A-data fwrev 0x0 hwrev
--- On Thu, 3/31/11, Arnd Bergmann wrote:
> From: Arnd Bergmann
> Subject: Re: ext2/3/4 group size
> To: devel@lists.laptop.org
> Cc: "Yioryos Asprobounitis"
> Date: Thursday, March 31, 2011, 3:34 AM
> On Thursday 31 March 2011 08:45:24
> Yioryos Asprobounitis
On Thursday 31 March 2011, Yioryos Asprobounitis wrote:
> --- On Thu, 3/31/11, Arnd Bergmann wrote:
>
> > From: Arnd Bergmann
>
> > The Kingston card probably uses a toshiba controller (oemid 0x544d)
> [snip]
> > The transcend cards I've seen typically use samsung
> > controllers (oemid 0x534
--- On Fri, 4/1/11, Arnd Bergmann wrote:
> From: Arnd Bergmann
> Subject: Re: ext2/3/4 group size
> To: "Yioryos Asprobounitis"
> Cc: devel@lists.laptop.org
> Date: Friday, April 1, 2011, 4:14 AM
> On Thursday 31 March 2011, Yioryos
> Asprobounitis wrote:
> &g
On Saturday 02 April 2011, Yioryos Asprobounitis wrote:
>
> Thanks for the info.
> I got a new Transcend 4GB class 10 card: oemid 0x4142(AB???), manfid
> 0x1e(RS???), hwrev 0x1, fwrev 0x0, serial 0x0aec
> and I checked it with flashbench when formatted as vfat (factory)
> standard ext3
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