From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KKOoH-00053s-K9 for qemu-devel@nongnu.org; Sat, 19 Jul 2008 22:38:05 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KKOoG-00053c-6s for qemu-devel@nongnu.org; Sat, 19 Jul 2008 22:38:05 -0400 Received: from [199.232.76.173] (port=60715 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KKOoG-00053Z-0t for qemu-devel@nongnu.org; Sat, 19 Jul 2008 22:38:04 -0400 Received: from py-out-1112.google.com ([64.233.166.182]:33439) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KKOoF-0000Sb-Qr for qemu-devel@nongnu.org; Sat, 19 Jul 2008 22:38:03 -0400 Received: by py-out-1112.google.com with SMTP id p76so735394pyb.10 for ; Sat, 19 Jul 2008 19:38:02 -0700 (PDT) Message-ID: <4882A4EC.2030706@codemonkey.ws> Date: Sat, 19 Jul 2008 21:37:32 -0500 From: Anthony Liguori MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 5/6] kvm: qemu: improve scsi dma speed by increasing the dma buffer size References: <1216329580-20804-1-git-send-email-aliguori@us.ibm.com> <1216329580-20804-5-git-send-email-aliguori@us.ibm.com> In-Reply-To: <1216329580-20804-5-git-send-email-aliguori@us.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paul Brook Sorry Paul, I should have CC'd you here. Do you see any immediate problem doing this? Didn't see any comments when from you when it was originally posted. Regards, Anthony Liguori Anthony Liguori wrote: > From: Avi Kivity > > taken from Xen 17267:f4a92f0db20f, original patch by Samuel Thibault. > > Signed-off-by: Avi Kivity > Signed-off-by: Anthony Liguori > > diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c > index 44462d4..fc7fbe0 100644 > --- a/hw/scsi-disk.c > +++ b/hw/scsi-disk.c > @@ -34,7 +34,7 @@ do { fprintf(stderr, "scsi-disk: " fmt , ##args); } while (0) > #define SENSE_HARDWARE_ERROR 4 > #define SENSE_ILLEGAL_REQUEST 5 > > -#define SCSI_DMA_BUF_SIZE 65536 > +#define SCSI_DMA_BUF_SIZE 131072 > > typedef struct SCSIRequest { > SCSIDeviceState *dev; > > >