Date: Wed, 10 Jun 1998 16:47:38 GMT From: jak@cetlink.net (John Kelly) To: "Justin T. Gibbs" <gibbs@plutotech.com> Cc: scsi@FreeBSD.ORG Subject: Re: buslogic problems Message-ID: <357eb821.46727503@mail.cetlink.net> In-Reply-To: <199806080314.VAA13557@pluto.plutotech.com> References: <199806080314.VAA13557@pluto.plutotech.com>
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On Sun, 07 Jun 1998 21:10:01 -0600, "Justin T. Gibbs"
<gibbs@plutotech.com> wrote:
>Most likely the degradation is from using ordered tags. Try this
>change around line 936 of sys/cam/scsi/scsi_da.c:
>
>#if 0
> if ((bp->b_flags & B_ORDERED) != 0
> || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
> softc->flags &= ~DA_FLAG_NEED_OTAG;
> softc->ordered_tag_count++;
> tag_code = MSG_ORDERED_Q_TAG;
> } else {
> tag_code = MSG_SIMPLE_Q_TAG;
> }
>#else
> tag_code = MSG_SIMPLE_Q_TAG;
>#endif
I get the same time as before, no difference between ordered tag and
simple tag. The slowdown must be elsewhere.
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