I tried the "ultra high throughput" script just for fun to see how much I could push ... I got a solid 920 mbps stream for the entire time I run the test (circa 30-60 seconds) with not spikes. The hardware in that case were two IBM hs-20 blades with broadcom chipsets.
I said for fun because if we use ixchariot for throughput tests usually is just for small T1 sites (max 3xT1) so I have never seen the issue you mentioned. Usually on the same T1, we fill the data VLAN with traffic and then we run x voice pairs on the voice vlan to validate QoS (MOS score). On Thu, Oct 28, 2010 at 5:16 PM, Jonathon Exley <jonathon.ex...@kordia.co.nz > wrote: > How smooth is the Ixchariot data stream? When Chariot was a NetIQ product > it seemed to generate regular spikes as the algorithm tried to correct the > total throughput over a time interval. > It's not a problem for slow data rates but when testing near the limit of a > circuit's capacity the spikes could sometimes overflow the buffers of > Ethernet media converters and give false results. > > Jonathon > > -----Original Message----- > From: Stefano Gridelli [mailto:sgride...@gmail.com] > Sent: Friday, 29 October 2010 1:08 a.m. > To: Diogo Montagner; Tim Jackson; nanog@nanog.org > Subject: Re: Ethernet performance tests > > Hi Diogo > > We use ixchariot endpoints installed on linux laptops to test sites for > voice readiness. Ixchariot calculates for you the MOS score and, depending > from the NIC, can also push close to 1 Gig of traffic. For larger bandwidth > tests (I believe 6-7 Gig) and fast re-route testing (ms failover) we use > ixia hardware. > > Ciao > > > This email and attachments: are confidential; may be protected by > privilege and copyright; if received in error may not be used,copied, > or kept; are not guaranteed to be virus-free; may not express the > views of Kordia(R); do not designate an information system; and do not > give rise to any liability for Kordia(R). > > >
