From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Zhang Subject: Re: More tales of horror from the linux (HW) raid crypt Date: Wed, 22 Jun 2005 20:49:18 -0400 Message-ID: <1119487758.5501.185.camel@localhost.localdomain> References: <5d96567b05061804477325d743@mail.gmail.com> <200506221316.33178.hjm@tacgi.com> <1119474566.11039.12.camel@dhcpc226.office.pivotlink.com> <200506221443.28613.hjm@tacgi.com> <1119477636.5501.161.camel@localhost.localdomain> <1119485655.42b9fed75fc87@mail.pivotlink.com> Reply-To: mingz@ele.uri.edu Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-wrd87D2XpfUeK4TaSFKS" Return-path: In-Reply-To: <1119485655.42b9fed75fc87@mail.pivotlink.com> Sender: linux-raid-owner@vger.kernel.org To: bdameron@pivotlink.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --=-wrd87D2XpfUeK4TaSFKS Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2005-06-22 at 17:14 -0700, bdameron@pivotlink.com wrote: > Quoting Ming Zhang : >=20 > > will this 24 port card itself will be a bottleneck? > >=20 > > ming >=20 > Since the card is PCI-X the only bottleneck on it might be the Processor = since=20 > it is shared with all 24 ports. But I do not know for sure without testin= g it.=20 > I personally am going to stick with the new 16 port version. Which is a P= CI- > Express card and has twice the CPU power. Since there are so many spindle= s it=20 > should be pretty darn fast. And remember that even tho the drives are 150= MBps=20 > they realistically only do about 25-30MBps.=20 the problem here is taht each HD can stably deliver 25-30MBps while the PCI-x will not arrive that high if have 16 or 24 ports. i do not have a chance to try out though. those bus at most arrive 70-80% the claimed peak # :P >=20 > Brad Dameron > SeaTab Software > www.seatab.com=20 > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html --=-wrd87D2XpfUeK4TaSFKS Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQBCugcOSYbkL5BnVYoRAidNAJsFBk/U3a4N/XBL0D8wumQQtuZwGACfeD35 60vEU56HzURoEVNGSI3AMUg= =Ykiq -----END PGP SIGNATURE----- --=-wrd87D2XpfUeK4TaSFKS--