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(trunk libT) possible IO speedup on OS X based on feedback from ticket #1967

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This commit is contained in:
Charles Kerr 2009-04-10 14:26:01 +00:00
parent 4f571c38e0
commit 2b8f8166bd
1 changed files with 2 additions and 8 deletions
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10
libtransmission/fdlimit.c
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@ -227,10 +227,7 @@ tr_open_file_for_reading( const char * filename, tr_bool sequential )
if( fd < 0 ) if( fd < 0 )
return NULL; return NULL;
#if defined( SYS_DARWIN ) #ifdef HAVE_POSIX_FADVISE
fcntl( fd, F_NOCACHE, 1 );
fcntl( fd, F_RDAHEAD, sequential );
#elif defined( HAVE_POSIX_FADVISE )
posix_fadvise( fd, 0, 0, sequential ? POSIX_FADV_SEQUENTIAL : POSIX_FADV_RANDOM ); posix_fadvise( fd, 0, 0, sequential ? POSIX_FADV_SEQUENTIAL : POSIX_FADV_RANDOM );
#endif #endif
@ -307,10 +304,7 @@ TrOpenFile( int i,
if( doWrite && !alreadyExisted && ( preallocationMode == TR_PREALLOCATE_SPARSE ) ) if( doWrite && !alreadyExisted && ( preallocationMode == TR_PREALLOCATE_SPARSE ) )
preallocateFileSparse( file->fd, desiredFileSize ); preallocateFileSparse( file->fd, desiredFileSize );
#if defined( SYS_DARWIN ) #ifdef HAVE_POSIX_FADVISE
fcntl( file->fd, F_NOCACHE, 1 );
fcntl( file->fd, F_RDAHEAD, 0 );
#elif defined( HAVE_POSIX_FADVISE )
posix_fadvise( file->fd, 0, 0, POSIX_FADV_RANDOM ); posix_fadvise( file->fd, 0, 0, POSIX_FADV_RANDOM );
#endif #endif