Good morning Winelfred, > > Will ask our secretary to dig out the details...however, the agent i spoke to > said that the CIR should be 2mbps din, since it's dedicated. > > > >> On Fri, Aug 8, 2008 at 10:28 AM, plug bert >> <[EMAIL PROTECTED]> wrote: >> >>> Hello All, >>> >>> Need your inputs peeps. >>> >>> We're currently running some tests on our link, >>> >> which is supposed to be a 2Mbps dedicated line. The test >> involves putting up an iperf server on our side, then >> running iperf in client mode on the remote side(i.e. Hong >> Kong). >> >>> So far the number's we're getting aren't >>> >> very impressive: initially we only got 150-180kbps, and only >> recently, around 300kbps. >> >>> i know that it's wishful thinking to expect >>> >> anything near 2Mbps, but i really wasn't expecting the >> numbers to be that bad; i was expecting at least somewhere >> in the 1.5Mbps range. >> >>> 1.) Is it reasonable to expect those figures? The >>> >> thing is that we're getting more or less the same >> numbers(actually, a little better numbers) from our backup >> link -- which doesn't even cost half of what we're >> paying for the link in question. Even if the speedtest.net >> results suggest that we're hitting 1Mbps...well, fact of >> the matter is, we don't need 1-2mbps going to >> speedtest.net, we need 2mbps going to our HK office B) >> >>> Right now i'm thinking in terms of the cost; i.e. >>> >> if we're paying X times more for this ISP, then the link >> should be at least X times faster than our backup link. Mas >> reasonable po ba kung ganito ang reasoning? >> >>> >>> 2.) i read somewhere that the TCP window size can >>> >> affect the speed; the impression i got from some sites is >> that you can increase performance in orders of magnitude. >> However, from my own testing, i find that the difference is >> marginal once you hit around 8kb -- i.e. the iperf results >> didn't vary that much when the specified window size is >> around 8Kb all the way up to 4Mb(there's only a very >> significant difference when you set it at ridiculously small >> sizes, e.g. 10 - 100 bytes). By default i think Linux sets >> it to 16kb, so right now i'm inclined to just disregard >> its effect on the speed/testing. >> >>> 3.) btw, are there any other alternatives to really >>> >> get 2mbps going to our remote site? Leased line perhaps? >> >>> tia >>> >>> You should be getting around 1.9+ Mbps, if that is really an E1 link. IMHO, you should try to check your iperf also, are both running on Linux? Try to compile iperf with --disable-threads options and do the test again. Do you have bandwidth management between those connections? ( a bridge pf/altq perhaps?).
regards, kenneth ------------------------------------------------------------------------ This message may contain confidential and/or privileged information intended only for the addressee. Any views expressed in this message are those of the individual sender and may not necessarily reflect the opinions of Panasonic Communications Philippines Corporation. ------------------------------------------------------------------------ _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
