[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] ehci: Improve detection of invalid entries in the a
From: |
David Ahern |
Subject: |
[Qemu-devel] [PATCH] ehci: Improve detection of invalid entries in the async schedule |
Date: |
Sun, 25 Apr 2010 11:48:29 -0600 |
Hi Jan:
Another patch for the ehci branch - emptying out my patch queue as I need to
set this aside for a while.
I am testing qemu and qemu-kvm with 3 different USB keys -- all Kingstons of
various sizes 1 GB, 4GB and 8GB. I am definitely seeing different behaviors
with the 4GB and 8GB working really well. With the 4GB key I am seeing data
rates of 5MB/sec with qemu and close to 8MB/sec with kvm. The 1 GB key hits
hiccups from time to time.
If you see the stall enable debugging in usb-linux:
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -243,7 +243,7 @@ static void async_complete(void *opaque)
p = aurb->packet;
- DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
+ printf("husb: async completed. aurb %p status %d alen %d\n",
aurb, aurb->urb.status, aurb->urb.actual_length);
if (p) {
David
- [Qemu-devel] [PATCH] ehci: Improve detection of invalid entries in the async schedule,
David Ahern <=