From fb8efa4c6ab4bc1af49d05b0bc6b16eb188ea3b1 Mon Sep 17 00:00:00 2001 From: Anand Avati Date: Fri, 30 Sep 2011 13:29:18 +0530 Subject: storage/posix: implement native linux AIO support Configurable via cli with "storage.linux-aio" settable option Change-Id: I9929e0d6fc1bbc2a0fe1fb67bfc8d15d8a483d3f BUG: 837495 Signed-off-by: Anand Avati Reviewed-on: http://review.gluster.com/3627 Tested-by: Gluster Build System Reviewed-by: Amar Tumballi --- xlators/storage/posix/src/posix-aio.h | 49 +++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 xlators/storage/posix/src/posix-aio.h (limited to 'xlators/storage/posix/src/posix-aio.h') diff --git a/xlators/storage/posix/src/posix-aio.h b/xlators/storage/posix/src/posix-aio.h new file mode 100644 index 00000000000..545130a2889 --- /dev/null +++ b/xlators/storage/posix/src/posix-aio.h @@ -0,0 +1,49 @@ +/* + Copyright (c) 2006-2012 Red Hat, Inc. + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + . +*/ + +#ifndef _POSIX_AIO_H +#define _POSIX_AIO_H + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "xlator.h" +#include "glusterfs.h" + +// Maximum number of concurrently submitted IO events. The heaviest load +// GlusterFS has been able to handle had 60-80 concurrent calls +#define POSIX_AIO_MAX_NR_EVENTS 256 + +// Maximum number of completed IO operations to reap per getevents syscall +#define POSIX_AIO_MAX_NR_GETEVENTS 16 + + +int posix_aio_on (xlator_t *this); +int posix_aio_off (xlator_t *this); + +int posix_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t offset, uint32_t flags, dict_t *xdata); + +int posix_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iovec *vector, int32_t count, off_t offset, + uint32_t flags, struct iobref *iobref, dict_t *xdata); + +#endif /* !_POSIX_AIO_H */ -- cgit