[sheepdog] [PATCH 3/6] sheep, sockfd cache: cache more than one FD for each node

[Liu Yuan]

On 06/25/2012 02:39 PM, MORITA Kazutaka wrote:
> Why do you assume the request size is 512k?  Maybe I'm missing
> something, and I'm fine with it if 8 is not too small.

This is default for any installation of Linux distro. At least for me I
don't see any number bigger than 512, even for ssd.

tailai.ly at taobao:~$ cat /sys/block/sda/queue/max_sectors_kb
512

But this value is tunable, though internal IO stack doesn't honor this
value faithfully ( I have tried change it to 4096(4M for req size), but
I noticed that Guest can only issue as big as around 3M req.

Thanks,
Yuan