Heh... I've used Chariot to bring several networks to whimpering on their respective knees...
Though this is completely unrelated to the freevo discussion, I recommend talking to NetIQ the next time you are doing any type of network performance / stress testing. Of course, you better bring a big bank balance too, because the last time I checked, Chariot cost you about$20k for a license... -----Original Message----- From: James Pulley [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 28, 2003 10:28 AM To: [EMAIL PROTECTED] Subject: RE: GigE performance (was Re: [Freevo-users] Parts for First freevo) All of the application-layer testing across various infrastructures (10/100/1000, Token-based copper and fiber, HPPI copper and fiber as well as others) in my case has been accomplished with Chariot from netIQ (commercial network testing tool). It's an all memory to memory operation testing interfaces, so the giant caveat with the 2x processor speed factor is "your mileage may differ" depending upon the ability of your other components to feed the pipe. Mileage may also differ depending upon OS, but then that is a different discussion. .. Hence my recommendation earlier for caching controllers and high rpm drives. Agreed, GigE is way overkill in this case. 'Pulley At Wednesday, 28 May 2003, you wrote: >We have ~2TB (on 10K RPM drives) direct-attached via dual ultra- 160 scsi >links to our NFS server. The NFS server is on a 1Gbs backbone, with 100Mbs >to all workstations. We hit the limit of the SCSI/drives no where near >the limit of our network. 1Gbs is so over kill. > >~Rob > >-----Original Message----- >From: Chris Flanagan [mailto:[EMAIL PROTECTED] >Sent: Tuesday, May 27, 2003 7:15 PM >To: [EMAIL PROTECTED] >Subject: RE: GigE performance (was Re: [Freevo-users] Parts for First >freevo) > >It's been my experience in network testing that unless you are strapped >to a serious drive array, you will run into the spindle speed of your >hard disk before you flush a 1Gbps link. > >I was doing some stress testing of gigabit equipment (Cisco Catalyst >6000 core switches) and we had two machines with Gig-E links copying >DVDs to each other simultaneously, and the switch only registered about >250 Mbit/sec. > >We then maxed the boxes on RAM, created RAMDisks, and setup scripts to >copy. That was more data :) > >- Chris > >-----Original Message----- >From: Wan Tat Chee [mailto:[EMAIL PROTECTED] >Sent: Tuesday, May 27, 2003 6:36 PM >To: [EMAIL PROTECTED] >Subject: GigE performance (was Re: [Freevo-users] Parts for First >freevo) > >This is slightly off topic, but the real-world performance of GigE is >nowhere near 1Gbps if you use a hub. I don't have the math in front of >me, but I don't think you'd achieve even 50% performance (typical for >10BaseT) over copper-based GigE of reasonable length (more than a few >meters). > >Not sure if a full-duplex link (switched or cross-cabled) would let you >achieve close to 1Gbps assuming that your computer can keep up though. > >T.C. > >---- >Wan Tat Chee (Lecturer) >School of Computer Science, Univ. Science Malaysia, >11800 Minden, Penang, Malaysia. Rm.625 Ofc Ph: +604 653-3888 x 3617 >NRG Lab Admin: +604 659-4757 Rm.601-E Ofc Ph: +604 653-4396 >Internet: [EMAIL PROTECTED] Web: http://nrg.cs.usm.my/~tcwan >GPG Key : http://nrg.cs.usm.my/~tcwan/tcw_gpg-20030322.asc >F'print : DCF2 B9B2 FA4D 1208 AD59 14CA 9A8F F54D B2C4 63C7 > >On Tue, 27 May 2003, James Pulley wrote: > >> >> Items to consider.... >[...] >> >> I have two replayTV units in my home - my next unit will be a freevo >> for which I purchases a an AOPEN motherboard with a tube output stage. >> The two replay units do just fine passing data from one to the >> other for replay in a 10Mbit switched network. (A 30 minute TV show >> takes about 10 minutes to pass the network as an MPEG2 file.) >> >> Just because GigeE is a built in solution does not mean that it is >> the most efficient or the best solution. >> >> James Pulley, iTest Solutions >> > >------------------------------------------------------- >This SF.net email is sponsored by: ObjectStore. >If flattening out C++ or Java code to make your application fit in a >relational database is painful, don't do it! Check out ObjectStore. Now >part of Progress Software. http://www.objectstore.net/sourceforge >_______________________________________________ >Freevo-users mailing list >[EMAIL PROTECTED] >https://lists.sourceforge.net/lists/listinfo/freevo-users > >------------------------------------------------------- >This SF.net email is sponsored by: ObjectStore. >If flattening out C++ or Java code to make your application fit in a >relational database is painful, don't do it! Check out ObjectStore. Now >part of Progress Software. http://www.objectstore.net/sourceforge >_______________________________________________ >Freevo-users mailing list >[EMAIL PROTECTED] >https://lists.sourceforge.net/lists/listinfo/freevo-users > >------------------------------------------------------- >This SF.net email is sponsored by: ObjectStore. >If flattening out C++ or Java code to make your application fit in a >relational database is painful, don't do it! Check out ObjectStore. 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If flattening out C++ or Java code to make your application fit in a relational database is painful, don't do it! Check out ObjectStore. Now part of Progress Software. http://www.objectstore.net/sourceforge _______________________________________________ Freevo-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/freevo-users
