On Tue, Jul 10 2001, Mike Anderson wrote:
> The call to do_aic7xxx_isr appears that you are running the aic7xxx_old.c
> code. This driver is using the io_request_lock to protect internal data.
> The newer aic driver has its own lock. This is related to previous
> comments by Jens and Eric about lower level use of this lock.
Yes
> I would like to know why the request_freelist is going empty? Having
Well, it's a limited resource so it's bound to go empty when under load.
In fact, if you have plenty of RAM this is what will end up starting I/O
on the queued buffers. With the batch freeing of request slots, this is
ok.
> __get_request_wait being called alot would appear to be not optimal.
?? Care to explain your reasoning behind this statement.
-- Jens Axboe- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Jul 15 2001 - 21:00:13 EST