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| author | Hans de Goede <hdegoede@redhat.com> | 2012-10-24 18:14:02 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-10-25 09:08:09 +0200 |
| commit | 44272b0f88247e2d2960c0ef19b546c206a10080 (patch) | |
| tree | 957b65deb982c4a1ee54d4e8d2650b38a778e40c /hw/pci-stub.c | |
| parent | 0262f65aaae49d582e7d4e4b1b5c8cfe4cd19d6d (diff) | |
| download | qemu-44272b0f88247e2d2960c0ef19b546c206a10080.zip qemu-44272b0f88247e2d2960c0ef19b546c206a10080.tar.gz qemu-44272b0f88247e2d2960c0ef19b546c206a10080.tar.bz2 | |
ehci: Speed up the timer of raising int from the async schedule
Often the guest will queue up new packets in response to a packet, in the
async schedule with its IOC flag set, completing. By speeding up the
frame-timer, we notice these new packets earlier. This increases the
speed (MB/s) of a Linux guest reading from a USB mass storage device by a
factor of 1.15 on top of the "Improve latency of interrupt delivery"
speed-ups, both with and without input pipelining enabled.
I've not tested the speed-up of this patch without the
"Improve latency of interrupt delivery" patch.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/pci-stub.c')
0 files changed, 0 insertions, 0 deletions