| From 5ddc634350dcd542bf8bbf80021dce4899dd207b Mon Sep 17 00:00:00 2001 |
| From: Hank Janssen <hjanssen@microsoft.com> |
| Date: Thu, 5 Aug 2010 19:30:31 +0000 |
| Subject: [PATCH] staging: hv: Increased storvsc ringbuffer and max_io_requests |
| |
| commit 15dd1c9f53b31cdc84b8072a88c23fa09527c596 upstream. |
| |
| Increased storvsc ringbuffer and max_io_requests. This now more |
| closely mimics the numbers on Hyper-V. And will allow more IO requests |
| to take place for the SCSI driver. |
| |
| Max_IO is set to double from what it was before, Hyper-V allows it and |
| we have had appliance builder requests to see if it was a problem to |
| increase the number. |
| |
| Ringbuffer size for storvsc is now increased because I have seen A few buffer |
| problems on extremely busy systems. They were Set pretty low before. |
| And since max_io_requests is increased I Really needed to increase the buffer |
| as well. |
| |
| Signed-off-by: Hank Janssen <hjanssen@microsoft.com> |
| Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| --- |
| drivers/staging/hv/StorVscApi.h | 4 ++-- |
| 1 files changed, 2 insertions(+), 2 deletions(-) |
| |
| diff --git a/drivers/staging/hv/StorVscApi.h b/drivers/staging/hv/StorVscApi.h |
| index 126a858..aad90bd 100644 |
| --- a/drivers/staging/hv/StorVscApi.h |
| +++ b/drivers/staging/hv/StorVscApi.h |
| @@ -28,10 +28,10 @@ |
| #include "VmbusApi.h" |
| |
| /* Defines */ |
| -#define STORVSC_RING_BUFFER_SIZE (10*PAGE_SIZE) |
| +#define STORVSC_RING_BUFFER_SIZE (20*PAGE_SIZE) |
| #define BLKVSC_RING_BUFFER_SIZE (20*PAGE_SIZE) |
| |
| -#define STORVSC_MAX_IO_REQUESTS 64 |
| +#define STORVSC_MAX_IO_REQUESTS 128 |
| |
| /* |
| * In Hyper-V, each port/path/target maps to 1 scsi host adapter. In |
| -- |
| 1.7.0.4 |
| |
