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Commit 0f0c4fab authored by Rusty Russell's avatar Rusty Russell
Browse files

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: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 398f187d

Documentation/lguest/lguest.c

+2 −2
Original line number Diff line number Diff line
@@ -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. */