[Gllug] Large Page Patch

[Huw Lynes]

On Wednesday 14 August 2002 09:35, Huw Lynes wrote:

> This was back in 2000 around about 2.2.13; 2.4 probably uses 64KB
> chunks by default for block device access. The talk of increasing it
> to 1MB gels with what the engineer said. I guess what I need to do
> now is find out what chunk size 2.4 uses and wether or not it can be
> increased. Although I don't relish the thought of having to use raw
> I/O to get the performance I need.

I/O performance in 2.5 seems to be much improved over 2.4; we can now 
get the full bandwidth (90MB/s) of the RAID using raw I/O. Plus the 
issue has forced me to go and learn some stuff that I probably should 
have known already.

-- 
| Huw Lynes               | The Moving Picture Company  |
| System Administrator    | 127 Wardour Street          |
|.........................| London, W1F 0NL             | 



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