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Date:      Mon, 27 Sep 1999 21:20:23 +0200 (MET DST)
From:      Gerard Roudier <groudier@club-internet.fr>
To:        Kevin Street <street@iname.com>
Cc:        scsi@FreeBSD.ORG
Subject:   Re: sym driver 0.3.0
Message-ID:  <Pine.LNX.3.95.990927211018.392A-100000@localhost>
In-Reply-To: <87puz5q8xg.fsf@mired.eh.local>

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Hello,

You test is not serious. If you only can provide 1.5MB/second throughput
for a benchmark of SCSI driver, please go away or make comparison with an
AHA 1542. I consider your posting to be a bad joke and hope that it is not
intentionnaly just bad taste.=20

G=E9rard.

On 27 Sep 1999, Kevin Street wrote:

> Gerard Roudier <groudier@club-internet.fr> writes:
>=20
> > I have made available revision 0.3.0 of the sym_hipd driver for
> > FreeBSD-CAM.  This driver version behaves correctly on QUEUE FULL
> > condition and has been rock solid for me.=20
>=20
> > Latest revision:
> >    sym-0.3.0-1990925
>=20
> I decided to give this a try on an ASUS SC-875 (since I don't have an
> 896) to see what it would do.  It's stable and seems to give similar=20
> performance to the ncr driver on make buildworld's (src on scsi, obj on i=
de). =20
>=20
> It's about 30% slower than the ncr driver with dump however. =20
> I was dumping from file systems on da1 to files on da0
> (a syquest syjet removable scsi).
>=20
> The sym driver gave me about 1125 - 1250 KBytes per second throughput.
> The ncr driver gave about 1550 - 1725 KBytes per second as reported by=20
> dump.  I tried these dumps a couple of times each with similar
> numbers.  These are medium size (400M - 750M) dumps.  Small file systems=
=20
> (eg root) were closer in speed with a slight edge to the ncr.
> =20
> Info from dmesg:
>=20
> ncr0: <ncr 53c875 fast20 wide scsi> irq 19 at device 9.0 on pci0
>=20
> or for the sym:
>=20
> sym0: <875> irq 19 at device 9.0 on pci0
> sym0: Symbios NVRAM, ID 7, Fast-20, parity checking
> sym0: open drain IRQ line driver, using on-chip SRAM
>   ...
> sym0: Downloading SCSI SCRIPTS.
> (noperiph:sym0:0:-1:-1): SCSI bus reset delivered.
> changing root device to da1s1a
> da0 at sym0 bus 0 target 0 lun 0
> da0: <SyQuest SyJet-S 0095> Removable Direct Access SCSI-2 device=20
> da0: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
> da0: 1430MB (2929800 512 byte sectors: 255H 63S/T 182C)
> da1 at sym0 bus 0 target 8 lun 0
> da1: <IBM DNES-309170W SA30> Fixed Direct Access SCSI-3 device=20
> da1: 40.000MB/s transfers (20.000MHz, offset 16, 16bit), Tagged Queueing =
Enabled
> da1: 8748MB (17916240 512 byte sectors: 255H 63S/T 1115C)
>=20
> --=20
> Kevin Street
> street@iname.com
>=20
>=20
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