| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 30 Oct 2008 08:36:41 -0700 From: Stephen Hemminger <shemminger@...tta.com> To: "Injong Rhee" <rhee@....ncsu.edu>, David Miller <davem@...emloft.net> Cc: <netdev@...r.kernel.org> Subject: [PATCH] tcp: mark BIC as experimental Change the configuration defaults to mark BIC as experimental. BIC is too aggressive and was replaced by CUBIC. Debian was picking BIC in their default config (should be fixed by now), but the configuration documentation did not make it explicit that this was a bad idea. Also update the URLs in the configuration documentation to current locations. Signed-off-by: Stephen Hemminger <shemminger@...tta.com> --- a/net/ipv4/Kconfig 2008-10-29 14:58:40.000000000 -0700 +++ b/net/ipv4/Kconfig 2008-10-30 08:18:08.000000000 -0700 @@ -437,7 +437,8 @@ if TCP_CONG_ADVANCED config TCP_CONG_BIC tristate "Binary Increase Congestion (BIC) control" - default m + depends on EXPERIMENTAL + default n ---help--- BIC-TCP is a sender-side only change that ensures a linear RTT fairness under large windows while offering both scalability and @@ -447,15 +448,24 @@ config TCP_CONG_BIC increment ensures linear RTT fairness as well as good scalability. Under small congestion windows, binary search increase provides TCP friendliness. - See http://www.csc.ncsu.edu/faculty/rhee/export/bitcp/ + + BIC growth function is too aggressive and should not be used + except for testing and comparision, use CUBIC instead. + + For further details see: + http://netsrv.csc.ncsu.edu/twiki/bin/view/Main/BIC config TCP_CONG_CUBIC tristate "CUBIC TCP" default y ---help--- - This is version 2.0 of BIC-TCP which uses a cubic growth function - among other techniques. - See http://www.csc.ncsu.edu/faculty/rhee/export/bitcp/cubic-paper.pdf + CUBIC TCP is an sender-side only modification to the congestion control + algothrim improved versions on the growth function of BIC and has an + improved slow start algoritm, called HyStart. + + For further details see: + http://netsrv.csc.ncsu.edu/twiki/bin/view/Main/BIC + config TCP_CONG_WESTWOOD tristate "TCP Westwood+" @@ -581,9 +591,6 @@ choice Select the TCP congestion control that will be used by default for all connections. - config DEFAULT_BIC - bool "Bic" if TCP_CONG_BIC=y - config DEFAULT_CUBIC bool "Cubic" if TCP_CONG_CUBIC=y @@ -610,7 +617,6 @@ config TCP_CONG_CUBIC config DEFAULT_TCP_CONG string - default "bic" if DEFAULT_BIC default "cubic" if DEFAULT_CUBIC default "htcp" if DEFAULT_HTCP default "vegas" if DEFAULT_VEGAS -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists