diff options
| author | Steve French <stfrench@microsoft.com> | 2018-09-25 15:33:47 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-10-23 21:16:05 -0500 |
| commit | 3d621230b8a0c6616f32b86ec3f0bc3ead9eb5b8 (patch) | |
| tree | 66d2eae03e9ab983cd82c407ef6b794760a4a6cb /fs/cifs/cifsglob.h | |
| parent | 6e4d3bbe92120f8482d31e4138e5fc2983caec3e (diff) | |
smb3: update default requested iosize to 4MB from 1MB for recent dialects
Modern servers often support 8MB as maximum i/o size, and we see some
performance benefits (my testing showed 1 to 13% on write paths,
and 1 to 3% on read paths for increasing the default to 4MB). If server
doesn't support larger i/o size, during negotiate protocol it is already
set correctly to the server's maximum if lower than 4MB.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs/cifsglob.h')
| -rw-r--r-- | fs/cifs/cifsglob.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index b2f7cbd587f9..2a9c4ab3ec5c 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -799,6 +799,7 @@ compare_mid(__u16 mid, const struct smb_hdr *smb) * a single wsize request with a single call. */ #define CIFS_DEFAULT_IOSIZE (1024 * 1024) +#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024) /* * Windows only supports a max of 60kb reads and 65535 byte writes. Default to |