Date: Wed, 18 Aug 2010 14:42:09 +0200 From: Thomas Steen Rasmussen <thomas@gibfest.dk> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-fs@freebsd.org Subject: Re: HAST initial sync speed Message-ID: <4C6BD521.1060807@gibfest.dk> In-Reply-To: <20100818121133.GC2177@garage.freebsd.pl> References: <20100806135001.GF1710@garage.freebsd.pl> <4C5ECA78.6010803@gibfest.dk> <20100810075528.GA1754@garage.freebsd.pl> <4C61CF4D.4060009@gibfest.dk> <4C651B7E.5000805@gibfest.dk> <20100816221059.GE2611@garage.freebsd.pl> <4C6B08BD.9080206@gibfest.dk> <20100818110655.GA2177@garage.freebsd.pl> <4C6BC0BA.9030303@gibfest.dk> <4C6BC35B.9040000@gibfest.dk> <20100818121133.GC2177@garage.freebsd.pl>
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On 18-08-2010 14:11, Pawel Jakub Dawidek wrote: > On Wed, Aug 18, 2010 at 01:26:19PM +0200, Thomas Steen Rasmussen wrote: > >> Sorry for responding to my own post. I recreated the HAST setup with the >> four harddrives and it is now saturating the gigabit link, it is >> synching at a steady >> rate of 112 megabytes per second, meaning that each of the disks are >> reading/writing at just under 30 megabytes per second. It would probably be >> even faster if the network wasn't limiting it. >> >> I built ZFS on top of it and everything seems to be working as expected. >> >> Thank you again for looking at this. >> > I'm very glad to hear that. I changed the default MAX_SEND_SIZE to 32kB > as it seems to be the safest setting. I had similar problem in ggate. > > OK. So it will be (or has been) committed to the tree ? What about MFC ? I should probably know this, but: What does this mean, like, when will this fix be in -STABLE or even in a -RELEASE ? > BTW. What network cards do you use there? > > The servers has four of these: bce0: <Broadcom NetXtreme II BCM5709 1000Base-T (C0)> Thomas Steen Rasmussen
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