David Miller wrote:
> From: voron <voron@amhost.net>
> Date: Tue, 24 Apr 2007 00:13:27 +0300
>
>   
>> As I see, nonblocking mode is enabled - sendfile sends less than asked.  
>>     
>
> The socket is marked as non-blocking, but the disk I/O is not.
>
> It's blocking on the disk I/O not the socket part of the operation.
>
>
>   
How can I told kernel to not block on disk I/O? I tried non-blocking on
disk i/o fd, but it  seems to be ignored. Strace with both nonblocing
disk fd and socket fd in attach
#non-blocking on socket fd enabled
04:34:07 ioctl(9, FIONBIO, [1])         = 0
#non-blocking on disk fd enabled
04:34:11 ioctl(12, FIONBIO, [1])        = 0
#normal sendfile
04:34:07 sendfile(9, 12, [444282], 2147477638) = 812682
#32 seconds sendfile
04:34:11 sendfile(9, 12, [261474962], 2147476846) = 2144612230

Thank you,
Alex