Date: Mon, 11 Dec 2006 02:47:41 -0500 From: David Gilbert <dgilbert@dclg.ca> To: Craig Boston <craig@feniz.gank.org> Cc: freebsd-stable@freebsd.org, Ulrich Spoerlein <uspoerlein@gmail.com>, David Gilbert <dgilbert@dclg.ca> Subject: Re: ggate still broken on 6.2-RC1 for amd64. Message-ID: <17789.3357.574773.690262@canoe.dclg.ca> In-Reply-To: <20061211024353.GA1220@nowhere> References: <17774.32960.176956.52924@canoe.dclg.ca> <20061203171221.GB2369@roadrunner.q.local> <20061211024353.GA1220@nowhere>
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>>>>> "Craig" == Craig Boston <craig@feniz.gank.org> writes: Craig> On Sun, Dec 03, 2006 at 06:12:21PM +0100, Ulrich Spoerlein Craig> wrote: >> David Gilbert wrote: > But the ggated/ggatec in 6.2-RC1 connects >> now (and is happy about > that). In fact, the tasting on the >> ggatec side that happens due to > new disks showing up works, too. >> However, any attempt to pass > significant traffic causes ggatec to >> seeminly lock up. >> >> /me too. Though I tested this on two FreeBSD/i386 SMP machines with >> gmirror + ggated combination. There *is* traffic going on, but it >> is somewhere around 50kB/s (sic! no kidding!). Craig> Have you tried increasing the send/receive buffer size? In my Craig> local ggate setup I'm running both the client and server with Craig> the options "-R 196608 -S 196608". I added it a while back Craig> after discovering that the default buffer size was inadequate Craig> in certain situations and would sometimes cause large block Craig> sized I/O to hang. Craig> This was a while ago and I mentioned it to pjd@ so the issue Craig> may be have been corrected, but it's something that shouldn't Craig> take long to try. That doesn't square with my experience. Although bigger buffers could be involved in a performance problem, what we're dealing with here is a _zero_ traffic situation. It seems that it works enough for tasting to be successful, but any significant load wedges it hard. Dave. -- ============================================================================ |David Gilbert, Independent Contractor. | Two things can be | |Mail: dave@daveg.ca | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================
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