Re: reiserfs performance on ssd

2006-04-28 Thread Perry Kundert
On 4/28/06, Andreas Dilger <[EMAIL PROTECTED]> wrote: On Apr 28, 2006 09:07 +0200, PFC wrote: > While I like the idea, the iram implementation is horrible for > various reasons : > > - no ECC I don't know why people are so keen on ECC RAM. Why not just put an extra socket on

Re: reiserfs performance on ssd

2006-04-28 Thread Jure Pečar
On Fri, 28 Apr 2006 02:20:02 -0600 Andreas Dilger <[EMAIL PROTECTED]> wrote: > I don't know why people are so keen on ECC RAM. Why not just put an > extra socket on the board and run the RAM in "RAIM" (RAID for Memory) > mode? The incremental cost of ECC vs. regular RAM is FAR more than > the cos

Re: reiserfs performance on ssd

2006-04-28 Thread Andreas Dilger
On Apr 28, 2006 09:07 +0200, PFC wrote: > While I like the idea, the iram implementation is horrible for > various reasons : > > - no ECC I don't know why people are so keen on ECC RAM. Why not just put an extra socket on the board and run the RAM in "RAIM" (RAID for Memory)

Re: reiserfs performance on ssd

2006-04-28 Thread PFC
While I like the idea, the iram implementation is horrible for various reasons : - no ECC - It uses SATA hence only a very little part of the RAM speed is used, and large latencies are introduced. - I wouldn't trust it for critical data. Then, it would be faster to just

Re: reiserfs performance on ssd

2006-04-27 Thread Gregory Maxwell
On 4/27/06, Toby Thain <[EMAIL PROTECTED]> wrote: > Sure ECC would be nice, but how does this differ from disk? Silent > failures are certainly possible. > > The fact that error detection and propagation doesn't really happen > in modern disk subsystems is why systems like Sun's ZFS are coming > in

Re: reiserfs performance on ssd

2006-04-27 Thread Toby Thain
On 27-Apr-06, at 10:28 AM, Gregory Maxwell wrote: On 4/27/06, Sander <[EMAIL PROTECTED]> wrote: I have a simple solid state disk to play with here. See http://nerv.eu.org/iram/ Interesting review, thanks. To get better reliability you could raid1 them. I guess this is a 'must' anyway when u

Re: reiserfs performance on ssd

2006-04-27 Thread Gregory Maxwell
On 4/27/06, Sander <[EMAIL PROTECTED]> wrote: > > I have a simple solid state disk to play with here. > > See http://nerv.eu.org/iram/ > > Interesting review, thanks. > > To get better reliability you could raid1 them. > I guess this is a 'must' anyway when used in servers (just like with > harddis

Re: reiserfs performance on ssd

2006-04-27 Thread Ming Zhang
o, yes. thx. http://www.anandtech.com/storage/showdoc.aspx?i=2480&p=10 see this review, when copy a large iso file, the speed is still around ~100MB/s. and this review also use a ASUS A8N motherboard. so none of these tests can 100% reflect the real performance. we need a nice SATA controller a

Re: reiserfs performance on ssd

2006-04-27 Thread Sander
Ming Zhang wrote (ao): > read u review. one thing i am not quite understand is the > > "Numbers speak from themselves. It's interesting to note that all > filesystems top the write speed at ~106MB/s and read speed at > ~125MB/s. It seem we're hitting 32bit PCI throughput limit here ." > > since

Re: reiserfs performance on ssd

2006-04-27 Thread Sander
Jure Pe??ar wrote (ao): > I have a simple solid state disk to play with here. > See http://nerv.eu.org/iram/ Interesting review, thanks. To get better reliability you could raid1 them. I guess this is a 'must' anyway when used in servers (just like with harddisks). Have to try this product myse

Re: reiserfs performance on ssd

2006-04-27 Thread Ming Zhang
read u review. one thing i am not quite understand is the "Numbers speak from themselves. It's interesting to note that all filesystems top the write speed at ~106MB/s and read speed at ~125MB/s. It seem we're hitting 32bit PCI throughput limit here ." since u said the iram use pci slot for power

reiserfs performance on ssd

2006-04-27 Thread Jure Pečar
Hi all, I have a simple solid state disk to play with here. See http://nerv.eu.org/iram/ Reiserfs is known to have good performance with small files. I am a big fan of it and am using it in production, however the numbers I got here got me thinking. fsstone is basically a create-rename-delete