Mailinglist Archive: opensuse (933 mails)

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Re: [opensuse] openSUSE on SSD?
  • From: Hans Witvliet <hwit@xxxxxxxxxxx>
  • Date: Tue, 01 Jun 2010 09:06:50 +0200
  • Message-id: <1275376011.27622.49.camel@xxxxxxxxxxxxxxxxxxxx>
On Tue, 2010-06-01 at 08:09 +0200, Roger Oberholtzer wrote:
On Mon, 2010-05-31 at 23:32 +0200, Hans Witvliet wrote:

What about this stuff about aligning the disk blocks on a 4k boundary to
match the physical disk access? If that is not done when the disk is
formatted, there could be a performance penalty. I did not think
openSUSE did this.

you see things in the wrong perspective, imho.

For ages we use 512 byte blocks.
If you start using larger blocks you might gain some speed, but it
doesn't mean there is a performance penalty when using 512 byte blocks.

When doing a 20GB read, l get:
20480000000 bytes (20 GB) copied, 124.208 s, 165 MB/s
just a bit (185MB/s) faster when doing smaller transfers.
Good enough for a simple firewall, for me atleast...

What should i gain with 4K blocks?
I think this is more intended for ordinary drives with rotating
platters...
hw
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