Date: Tue, 3 Nov 2009 16:57:20 +0100 (CET) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-stable@FreeBSD.ORG, petefrench@ticketswitch.com Subject: Re: problems with gmirror on ggate over slow link Message-ID: <200911031557.nA3FvKm5061241@lurza.secnetix.de> In-Reply-To: <E1N1JgZ-000I9b-VK@dilbert.ticketswitch.com>
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Pete French wrote: > [...] > > Just a wild guess, have you tried to set kern.geom.mirror.timeout to a > > higher value? > > Yes, I tried values all the way up to 600, no effect at all - plus the > failure comes way before that timeout value (which is in seconds I assume). Have you done any sockets tuning? In an older posting the following values were recommended: /etc/sysctl.conf: net.inet.tcp.sendspace=1048576 net.inet.tcp.recvspace=1048576 kern.ipc.maxsockbuf=2049152 /boot/loader.conf: kern.ipc.nmbclusters="32768" Command line options to ggate[cd]: ggate[dc]_buf_size="1310720" ggatec_timeout="5" ggatec_queue_size="2048" Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "C++ is over-complicated nonsense. And Bjorn Shoestrap's book a danger to public health. I tried reading it once, I was in recovery for months." -- Cliff Sarginson
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