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| author | Frank Gevaerts <frank@gevaerts.be> | 2009-05-20 16:57:17 +0000 |
|---|---|---|
| committer | Frank Gevaerts <frank@gevaerts.be> | 2009-05-20 16:57:17 +0000 |
| commit | fba4be213f399f19933aadcce25498ea1fb0c176 (patch) | |
| tree | c74268b3625e31948cd5cac75bdbe831af2ddeb9 | |
| parent | 106d2ebd072648482c739d35f6a9f9a0cdfa18e5 (diff) | |
| download | rockbox-fba4be213f399f19933aadcce25498ea1fb0c176.tar.gz rockbox-fba4be213f399f19933aadcce25498ea1fb0c176.zip | |
Don't force double-buffering for sd devices. They apparently are not faster with it, ans possibly actually slower
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20999 a1c6a512-1295-4272-9138-f99709370657
| -rw-r--r-- | firmware/usbstack/usb_storage.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/firmware/usbstack/usb_storage.c b/firmware/usbstack/usb_storage.c index 0d06221750..b498311014 100644 --- a/firmware/usbstack/usb_storage.c +++ b/firmware/usbstack/usb_storage.c | |||
| @@ -53,10 +53,16 @@ | |||
| 53 | * wouldn't buy us anything. | 53 | * wouldn't buy us anything. |
| 54 | * Due to being the double-buffering system used, using a smaller write buffer | 54 | * Due to being the double-buffering system used, using a smaller write buffer |
| 55 | * ends up being more efficient. Measurements have shown that 24k to 28k is | 55 | * ends up being more efficient. Measurements have shown that 24k to 28k is |
| 56 | * optimal | 56 | * optimal, except for sd devices that apparently don't gain anything from |
| 57 | * double-buffering | ||
| 57 | */ | 58 | */ |
| 58 | #define READ_BUFFER_SIZE (1024*64) | 59 | #define READ_BUFFER_SIZE (1024*64) |
| 60 | |||
| 61 | #if (CONFIG_STORAGE & STORAGE_SD) | ||
| 62 | #define WRITE_BUFFER_SIZE (1024*64) | ||
| 63 | #else | ||
| 59 | #define WRITE_BUFFER_SIZE (1024*24) | 64 | #define WRITE_BUFFER_SIZE (1024*24) |
| 65 | #endif | ||
| 60 | 66 | ||
| 61 | #define ALLOCATE_BUFFER_SIZE (2*MAX(READ_BUFFER_SIZE,WRITE_BUFFER_SIZE)) | 67 | #define ALLOCATE_BUFFER_SIZE (2*MAX(READ_BUFFER_SIZE,WRITE_BUFFER_SIZE)) |
| 62 | 68 | ||