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Re: [gentoo-performance] TCP perfomance
There is no such thing has a TCP timestamp: http://freebie.fatpipe.org/~mjb/Drawings/TCP_Header.png so, that doesn't make any sense... On Fri, Jun 6, 2008 at 5:41 PM, Kevin Faulkner [EMAIL PROTECTED] wrote: Yes, I also forgot that I had been subscribed to this list. To get a topic going I was at work and I argued that we should disable TCP timestamps. I was discussing in a meeting that this would cut back (perhaps very slightly) on the amount of work that the system has to do before sending a packet out. In a high traffic system (like a file server or a mail server or in my case a Oracle Database), not having to throw this on every packet should increase performance ever so slightly. Disabling this would benefit security, as the attacker would not be able to gather the up time from the targeted system. Like I said this might be a slight increase, but its an increase none-the-less, and when you have a DBA crying about poor network speed or IO, or the system is too heavily loaded, then this keeps him quiet for a few days. :) Any thoughts??? -- gentoo-performance@lists.gentoo.org mailing list -- Miguel Sousa Filipe -- gentoo-performance@lists.gentoo.org mailing list
Re: [gentoo-performance] TCP perfomance
Miguel Sousa Filipe wrote: There is no such thing has a TCP timestamp: http://freebie.fatpipe.org/~mjb/Drawings/TCP_Header.png so, that doesn't make any sense... Your right and I'm wrong. Its not in the header, its thrown on at the end try doing cat /proc/sys/net/ipv4/tcp_timestamps http://www.networksorcery.com/enp/protocol/tcp/option008.htm http://www.securiteam.com/securitynews/5NP0C153PI.html -- gentoo-performance@lists.gentoo.org mailing list
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Re: [gentoo-performance] unsubscribe
On Fri, 6 Jun 2008 19:45:35 +0200 Dirk Wende [EMAIL PROTECTED] wrote: *sigh* How many people have to try it before the last one _finally_ recognizes that it doesn't work that way? In other words: RTFM http://www.gentoo.org/main/en/lists.xml signature.asc Description: PGP signature
Re: [gentoo-performance] unsubscribe
Florian Philipp wrote: On Fri, 6 Jun 2008 19:45:35 +0200 Dirk Wende [EMAIL PROTECTED] wrote: *sigh* How many people have to try it before the last one _finally_ recognizes that it doesn't work that way? In other words: RTFM http://www.gentoo.org/main/en/lists.xml To be fair to those unsubscribing, I'd like to mention that most of them just opened their email and saw a couple hundred emails with a subject of [gentoo-performance] Illegal IMail List Server Command!. I doubt they saw any of the unsubscribe attempts since most were replies and would not be shown in most threaded email clients. It is annoying, though. Does anyone know what happened? I saw some theories, but no hard This happened... posts. PaulNM -- gentoo-performance@lists.gentoo.org mailing list
RE: [gentoo-performance] unsubscribe
how do i unsubscribe from this? Original Message Subject: Re: [gentoo-performance] unsubscribe From: Florian Philipp [EMAIL PROTECTED].net Date: Fri, June 06, 2008 2:30 pm To: gentoo-performance@lists.gentoo.org On Fri, 6 Jun 2008 19:45:35 +0200 Dirk Wende dwende@versanet.de wrote: *sigh* How many people have to try it before the last one _finally_ recognizes that it doesn't work that way? In other words: RTFM http://www.gentoo.org/main/en/lists.xml -- gentoo-performance@lists.gentoo.org mailing list
Re: [gentoo-performance] unsubscribe
[EMAIL PROTECTED] wrote: how do i unsubscribe from this? Original Message Subject: Re: [gentoo-performance] unsubscribe From: Florian Philipp [EMAIL PROTECTED] mailto:[EMAIL PROTECTED].net Date: Fri, June 06, 2008 2:30 pm To: gentoo-performance@lists.gentoo.org mailto:gentoo-performance@lists.gentoo.org On Fri, 6 Jun 2008 19:45:35 +0200 Dirk Wende [EMAIL PROTECTED] http://email.secureserver.net/pcompose.php#Compose wrote: *sigh* How many people have to try it before the last one _finally_ recognizes that it doesn't work that way? In other words: RTFM http://www.gentoo.org/main/en/lists.xmlhttp://www.gentoo.org/main/en/lists.xml -- gentoo-performance@lists.gentoo.org mailing list Is this a joke? The email you replied to tells you exactly how to do that. http://www.gentoo.org/main/en/lists.xml Tenth line of text: To unsubscribe from a list, send an empty email to: [EMAIL PROTECTED] So send an empty email to [EMAIL PROTECTED] PaulNM -- gentoo-performance@lists.gentoo.org mailing list
Re: [gentoo-performance] unsubscribe
2008/6/6 [EMAIL PROTECTED]: how do i unsubscribe from this? As Florian pointed out: In other words: RTFM http://www.gentoo.org/main/en/lists.xml Alex -- gentoo-performance@lists.gentoo.org mailing list
