Date: Fri, 09 Jan 2004 23:03:09 +0800 From: David Xu <davidxu@freebsd.org> To: Andre Oppermann <andre@freebsd.org> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/netinet ip_icmp.c tcp.h tcp_input.c tcp_subr.ctcp_usrreq.c tcp_var.h Message-ID: <3FFEC2AD.1020407@freebsd.org> In-Reply-To: <3FFEB449.1C32B5FD@freebsd.org> References: <200401081740.i08He8J9063202@repoman.freebsd.org> <3FFEAFC2.8070303@freebsd.org> <3FFEB449.1C32B5FD@freebsd.org>
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Andre Oppermann wrote: > David Xu wrote: > >>I got following messages when I am running mysql stress test suite, >>and the test can not be completed. >> >>"too many small tcp packets from 128.0.0.1:20672, av. 91byte/packet, >>dropping connection" > > > You can set net.inet.tcp.minmssoverload to a higher value than the > default of 1,000. I suggest trying with 2,000 as next step and see > if it still overloads. > > Appearently my default of 1,000 pps is fine for normal use but too > low for some edge cases. > > Could you check the MySQL source code if it has a setsockopt() setting > the TCP_NODELAY option? That would help to explain a lot. > Yes, it has. I temporarily reset these values to zero, now it passes all tests.
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