Re: SSD and non-SSD Suitability

2010-06-01 Thread Jiro SEKIBA
At Sat, 29 May 2010 09:43:35 +0100, Gordan Bobic wrote: Jiro SEKIBA wrote: 2) Mechanical disks suffer from slow random writes (or any random operation for that matter), too. Do the benefits of nilfs show in random write performance on mechanical disks? I think it may have benefits,

Re: SSD and non-SSD Suitability

2010-05-29 Thread Jiro SEKIBA
Hi, At Fri, 28 May 2010 10:50:31 +0100, Gordan Bobic wrote: Jiro SEKIBA wrote: I haven't got any particular quantitative data by my own, so I'll write somewhat subjective opinion. Thanks, I appreciate it. :) I've got a somewhat broad question on the suitability of nilfs for

Re: SSD and non-SSD Suitability

2010-05-29 Thread David Arendt
Hi, On 05/29/10 09:31, Jiro SEKIBA wrote: Hi, At Fri, 28 May 2010 10:50:31 +0100, Gordan Bobic wrote: Jiro SEKIBA wrote: I haven't got any particular quantitative data by my own, so I'll write somewhat subjective opinion. Thanks, I appreciate it. :) I've got a

Re: SSD and non-SSD Suitability

2010-05-28 Thread Gordan Bobic
Vincent Diepeveen wrote: 1) Modern SSDs (e.g. Intel) do this logical/physical mapping internally, so that the writes happen sequentially anyway. Could you explain that, as far as i know modern SSD's have 8 independant channels to do read and writes, which is why they are having that big

Re: SSD and non-SSD Suitability

2010-05-28 Thread Vincent Diepeveen
On May 28, 2010, at 11:24 AM, Gordan Bobic wrote: Vincent Diepeveen wrote: 1) Modern SSDs (e.g. Intel) do this logical/physical mapping internally, so that the writes happen sequentially anyway. Could you explain that, as far as i know modern SSD's have 8 independant channels to do read

Re: SSD and non-SSD Suitability

2010-05-28 Thread Gordan Bobic
Vincent Diepeveen wrote: 1) Modern SSDs (e.g. Intel) do this logical/physical mapping internally, so that the writes happen sequentially anyway. Could you explain that, as far as i know modern SSD's have 8 independant channels to do read and writes, which is why they are having that big read

Re: SSD and non-SSD Suitability

2010-05-28 Thread Gordan Bobic
Vincent Diepeveen wrote: 1) Modern SSDs (e.g. Intel) do this logical/physical mapping internally, so that the writes happen sequentially anyway. Could you explain that, as far as i know modern SSD's have 8 independant channels to do read and writes, which is why they are having that big read

SSD and non-SSD Suitability

2010-05-26 Thread Gordan Bobic
I've got a somewhat broad question on the suitability of nilfs for various workloads and different backing storage devices. From what I understand from the documentation available, the idea is to always write sequentially, and thus avoid slow random writes on old/naive SSDs. Hence I have a few