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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-07-29 16:58:37 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-07-29 01:58:38 +0200 |
| commit | 0f0c4fab8284f3b886b2e1e0e317e3bb8de176b3 (patch) | |
| tree | 2509e74b573bac7560f42cc7ab3640814cf683d7 /Documentation/lguest/lguest.c | |
| parent | lguest: Use GSO/IFF_VNET_HDR extensions on tun/tap (diff) | |
| download | linux-0f0c4fab8284f3b886b2e1e0e317e3bb8de176b3.tar.xz linux-0f0c4fab8284f3b886b2e1e0e317e3bb8de176b3.zip | |
lguest: Enlarge virtio rings
With big packets, 128 entries is a little small.
Guest -> Host 1GB TCP:
Before: 8.43625 seconds xmit 95640 recv 198266 timeout 49771 usec 1252
After: 8.01099 seconds xmit 49200 recv 102263 timeout 26014 usec 2118
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/lguest/lguest.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c index dc49f50e04ac..f9bba2d8fee1 100644 --- a/Documentation/lguest/lguest.c +++ b/Documentation/lguest/lguest.c @@ -66,8 +66,8 @@ typedef uint8_t u8; #endif /* We can have up to 256 pages for devices. */ #define DEVICE_PAGES 256 -/* This will occupy 2 pages: it must be a power of 2. */ -#define VIRTQUEUE_NUM 128 +/* This will occupy 3 pages: it must be a power of 2. */ +#define VIRTQUEUE_NUM 256 /*L:120 verbose is both a global flag and a macro. The C preprocessor allows * this, and although I wouldn't recommend it, it works quite nicely here. */ |