- From: Ian Abbott <abbotti_at_mev.co.uk>
- Date: Fri, 02 Sep 2005 10:29:32 +0100
On 02/09/2005 09:30, SA wrote: > However the read / write methods are much faster than the ioctl()s regardless of the > datasize transferred. I don't know where the additional ioctl overhead comes from > and I found it very surprising that there was such a difference. The only thing that springs to my mind is that the BKL (big kernel lock) is grabbed when processing an ioctl using the regular method. I don't think it should make that much difference though. -- -=( Ian Abbott _at_ MEV Ltd. E-mail: <abbotti_at_mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
Received on 2005-09-02Z08:29:32