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RE: [SAGE] Enterprise Documentation
Curtis Preston? That guy's an idiot! ;)
Seriously, though, Craig. I think you did the right thing. Some other
answers are very good. You can begin to understand these things by reading
internals books. I would agree that knowing how to program would help as well.
I'd like to discuss the issue at hand, though. First, let me clarify what
I think the vendors said. I wouldn't agree that simply putting a GbE NIC
on your Linux box will increase processing. Attempting to USE that GbE
pipe definitely would, though. Perhaps your 100 Mb connection that you had
before was not coming even close to doing the job, and once you put the GbE
NIC up there, your applications all said, "Finally!" and started filling
the GbE pipe.
That paper was so mid 90s. ;) You can see it at
http://www.backupcentral.com/e10k-lisa98.html , but a lot of things have
changed since then. The new answer is no longer jumbo frames, although
that could help. The new answer are hardware-accelerated GbE NICs that
remove the processing off of the host CPU and onto the card. Sun, Intel,
and Alacritech all have such NICs. There may be others.
http://www.intel.com/network/connectivity/products/pro1000giga.htm
http://www.sun.com/products-n-solutions/hardware/docs/Network_Connectivity/Sun_GigaSwift_Ethernet/index.html
http://www.alacritech.com/html/1000series.html
At 06:56 PM 1/30/2002 -0800, Todd Williams wrote:
>You might want to see Curtis Preston's LISA paper about backing up a 6TB
>Oracle instance.
>(sorry, don't have the reference handy). I seem to remember him having this
>problem due to the Ethernet MTU of 1500.
>1500 go by fast at Gig speeds, and the CPU get interrupted every time. His
>E10000 could only push ~300Mbps thru the Gig pipe.
>He solved this by going to an Alteon Gig enet board with "jumbo frames" of
>9000.
>
>....or something like that.
>
>Hmmm... I guess I didn't answer your question...but from my non-answer
>above, I guess my answer would be: "attend USENIX conferences."
>
>-Todd Williams
>
> > Then when I didn't know where else to turn I called the company of the
>product and there
> > response was that since you switch over to gigabit your network bandwidth
>has increased 10 folds
> > there for the faster the traffic the more instense the proccesor has to
>grind.
> > ...
> > how does one begin to understand such topics?