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Message-ID: <415B2FCD.1020103@bellard.org>
Date: Wed, 29 Sep 2004 23:57:33 +0200
From: Fabrice Bellard <fabrice@bellard.org>
MIME-Version: 1.0
Subject: Re: [Qemu-devel] Network Issue with NE2k-PCI (fix?)
References: <20040923001951.GA21261@wormley.com>
In-Reply-To: <20040923001951.GA21261@wormley.com>
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To: qemu-devel@nongnu.org

Applied.

Fabrice.

Steve Wormley wrote:
> I was having serious performance issues with Win2000 Guest and the NE2k in
> qemu, things like pings of up to 16000ms lost packets, etc. I chased down
> the problem and it appears that the following fix resolved the issue on my
> system.
> 
> Now pings are:
> 
> 151 packets transmitted, 151 packets received, 0% packet loss
> round-trip min/avg/max = 2.207/17.174/195.239 ms
> 
> 
> --- qemu/hw/i8259.c	Sun Jun 20 05:58:36 2004
> +++ qemu-sw/hw/i8259.c	Wed Sep 22 10:49:17 2004
> @@ -188,7 +196,11 @@
>      } else {
>          s->isr |= (1 << irq);
>      }
> +	/* We don't clear a level sensitive interrupt here */
> +    if (!(s->elcr & (1 << irq))) {
>      s->irr &= ~(1 << irq);
> +	};
> +
>  }
>  
>  int cpu_get_pic_interrupt(CPUState *env)
> 
> 
> 
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