* TCP Congestion Control Algorithms [not found] <a45e9b40908311408l15d68088i459d6a1000cbca07@mail.gmail.com> @ 2009-08-31 21:10 ` Lisong Xu 2009-08-31 22:07 ` Stephen Hemminger 0 siblings, 1 reply; 3+ messages in thread From: Lisong Xu @ 2009-08-31 21:10 UTC (permalink / raw) To: netdev Hello, Since there are multiple different TCP congestion control algorithms available in Linux, a Linux server may use any of them. Is it possible for a regular user to find out the exact TCP congestion control algorithm used by a Linux server? For example, if I am downloading a file from a remote Linux server using a TCP flow, can I find out whether this flow is a TCP/CUBIC flow, or TCP/Newreno, or some other TCP protocol? Thanks! If I send this email to a wrong mailing list, I am sorry for that. Lisong ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: TCP Congestion Control Algorithms 2009-08-31 21:10 ` TCP Congestion Control Algorithms Lisong Xu @ 2009-08-31 22:07 ` Stephen Hemminger 2009-09-01 0:37 ` Lisong Xu 0 siblings, 1 reply; 3+ messages in thread From: Stephen Hemminger @ 2009-08-31 22:07 UTC (permalink / raw) To: Lisong Xu; +Cc: netdev On Mon, 31 Aug 2009 16:10:59 -0500 Lisong Xu <lisongxu2@gmail.com> wrote: > Hello, > > Since there are multiple different TCP congestion control algorithms > available in Linux, a Linux server may use any of them. > > Is it possible for a regular user to find out the exact TCP congestion > control algorithm used by a Linux server? For example, if I am > downloading a file from a remote Linux server using a TCP flow, can I > find out whether this flow is a TCP/CUBIC flow, or TCP/Newreno, or > some other TCP protocol? > No. you might be able to some nmap style guessing, but no remote API. You can see locally on the server through /proc/sys/net ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: TCP Congestion Control Algorithms 2009-08-31 22:07 ` Stephen Hemminger @ 2009-09-01 0:37 ` Lisong Xu 0 siblings, 0 replies; 3+ messages in thread From: Lisong Xu @ 2009-09-01 0:37 UTC (permalink / raw) To: Stephen Hemminger; +Cc: netdev Thanks, Stephen! Lisong On Mon, Aug 31, 2009 at 5:07 PM, Stephen Hemminger<shemminger@vyatta.com> wrote: > On Mon, 31 Aug 2009 16:10:59 -0500 > Lisong Xu <lisongxu2@gmail.com> wrote: > >> Hello, >> >> Since there are multiple different TCP congestion control algorithms >> available in Linux, a Linux server may use any of them. >> >> Is it possible for a regular user to find out the exact TCP congestion >> control algorithm used by a Linux server? For example, if I am >> downloading a file from a remote Linux server using a TCP flow, can I >> find out whether this flow is a TCP/CUBIC flow, or TCP/Newreno, or >> some other TCP protocol? >> > > No. you might be able to some nmap style guessing, but no remote > API. You can see locally on the server through /proc/sys/net > ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-09-01 0:37 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <a45e9b40908311408l15d68088i459d6a1000cbca07@mail.gmail.com>
2009-08-31 21:10 ` TCP Congestion Control Algorithms Lisong Xu
2009-08-31 22:07 ` Stephen Hemminger
2009-09-01 0:37 ` Lisong Xu
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).