Date: Wed, 24 Aug 2011 16:03:06 -0400 From: George Neville-Neil <gnn@neville-neil.com> To: Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net> Cc: arch@freebsd.org Subject: Re: Updating our TCP and socket sysctl values... Message-ID: <72EBCA4C-B002-4A77-9D4B-28541C1933C1@neville-neil.com> In-Reply-To: <D91D35DF-B846-40AB-8C3A-8F9A89DABA47@lists.zabbadoz.net> References: <132388F1-44D9-45C9-AE05-1799A7A2DCD9@neville-neil.com> <D91D35DF-B846-40AB-8C3A-8F9A89DABA47@lists.zabbadoz.net>
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On Aug 24, 2011, at 12:18 , Bjoern A. Zeeb wrote: > On Mar 19, 2011, at 6:37 AM, George Neville-Neil wrote: >=20 >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >>=20 >> Howdy, >>=20 >> I believe it's time for us to upgrade our sysctl values for TCP = sockets so that >> they are more in line with the modern world. At the moment we have = these limits on >> our buffering: >>=20 >> kern.ipc.maxsockbuf: 262144 >> net.inet.tcp.recvbuf_max: 262144 >> net.inet.tcp.sendbuf_max: 262144 >>=20 >> I believe it's time to up these values to something that's in line = with higher speed >> local networks, such as 10G. Perhaps it's time to move these to 2MB = instead of 256K. >>=20 >> Thoughts? >=20 >=20 > This never happened, did it? Was there a reason? >=20 I went back and looked at the mail thread. I didn't see any strong = objections so I think you should commit this for 9.x. np@ did point out that nmbclusters also lags on modern hardware so = consider upping that at the same time. Best, George > Index: sys/netinet/tcp_input.c > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > --- sys/netinet/tcp_input.c (revision 225048) > +++ sys/netinet/tcp_input.c (working copy) > @@ -195,7 +195,7 @@ SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, recvbuf_i > &VNET_NAME(tcp_autorcvbuf_inc), 0, > "Incrementor step size of automatic receive buffer"); >=20 > -VNET_DEFINE(int, tcp_autorcvbuf_max) =3D 256*1024; > +VNET_DEFINE(int, tcp_autorcvbuf_max) =3D 2*1024*1024; > #define V_tcp_autorcvbuf_max VNET(tcp_autorcvbuf_max) > SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, recvbuf_max, CTLFLAG_RW, > &VNET_NAME(tcp_autorcvbuf_max), 0, > Index: sys/netinet/tcp_output.c > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > --- sys/netinet/tcp_output.c (revision 225048) > +++ sys/netinet/tcp_output.c (working copy) > @@ -117,7 +117,7 @@ SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, sendbuf_i > &VNET_NAME(tcp_autosndbuf_inc), 0, > "Incrementor step size of automatic send buffer"); >=20 > -VNET_DEFINE(int, tcp_autosndbuf_max) =3D 256*1024; > +VNET_DEFINE(int, tcp_autosndbuf_max) =3D 2*1024*1024; > #define V_tcp_autosndbuf_max VNET(tcp_autosndbuf_max) > SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, sendbuf_max, CTLFLAG_RW, > &VNET_NAME(tcp_autosndbuf_max), 0, > Index: sys/sys/sockbuf.h > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > --- sys/sys/sockbuf.h (revision 225048) > +++ sys/sys/sockbuf.h (working copy) > @@ -37,7 +37,7 @@ > #include <sys/_mutex.h> > #include <sys/_sx.h> >=20 > -#define SB_MAX (256*1024) /* default for max = chars in sockbuf */ > +#define SB_MAX (2*1024*1024) /* default for max = chars in sockbuf */ >=20 > /* > * Constants for sb_flags field of struct sockbuf. >=20 > --=20 > Bjoern A. Zeeb You have to have = visions! > Stop bit received. Insert coin for new address family. >=20 > _______________________________________________ > freebsd-arch@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arch > To unsubscribe, send any mail to = "freebsd-arch-unsubscribe@freebsd.org"
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