Re: Optimize kernel readahead using buffer access strategy

On 11/14/13, 7:09 AM, KONDO Mitsumasa wrote:
> I create a patch that is improvement of disk-read and OS file caches. It can
> optimize kernel readahead parameter using buffer access strategy and
> posix_fadvice() in various disk-read situations.

Various compiler warnings:

tablecmds.c: In function ‘copy_relation_data’:
tablecmds.c:9120:3: warning: passing argument 5 of ‘smgrread’ makes pointer from integer without a cast [enabled by default]
In file included from tablecmds.c:79:0:
../../../src/include/storage/smgr.h:94:13: note: expected ‘char *’ but argument is of type ‘int’

bufmgr.c: In function ‘ReadBuffer_common’:
bufmgr.c:455:4: warning: passing argument 5 of ‘smgrread’ from incompatible pointer type [enabled by default]
In file included from ../../../../src/include/storage/buf_internals.h:22:0,
from bufmgr.c:45:
../../../../src/include/storage/smgr.h:94:13: note: expected ‘char *’ but argument is of type ‘BufferAccessStrategy’

md.c: In function ‘mdread’:
md.c:680:2: warning: passing argument 2 of ‘BufferHintIOAdvise’ makes integer from pointer without a cast [enabled by default]
In file included from md.c:34:0:
../../../../src/include/storage/fd.h:79:12: note: expected ‘off_t’ but argument is of type ‘char *’