RE: RAC system Calls

Nah - no reason not to use it, especially given how long they've been around. Basically you should enable jumbo frames everywhere you can - whenever your box talks to a host that doesn't support them, it just won't use them, and when it can it'll get the performance advantage (side note: your switch has to support jumbo frames as well, but every major managed switch manufacturer does, so that's not such a big deal). Everyone wins.

Thanks,
Matt

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Matthew Zito
GridApp Systems
Email: mzito_at_gridapp.com
Cell: 646-220-3551
Phone: 212-358-8211 x 359
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> -----Original Message-----

> From: ml-errors_at_fatcity.com [mailto:ml-errors_at_fatcity.com] On 

> Behalf Of Ravi Kulkarni

> Sent: Thursday, July 10, 2003 7:04 PM

> To: Multiple recipients of list ORACLE-L

> Subject: RE: RAC system Calls

> 

> 

> Hey Matt, 

> Thanks for the useful info.

> 

> >into a smaller number of ethernet frames,

> > reducing both latency and overhead.  Ideally, each

> > block will fit into one ethernet frame,

> We are using 16K blocksize, so we cannot avoid

> datagram splits with 9k frames - but certainly, sounds

> better than with 1500 frames.

> >so unless you're running one of a couple of

> third-party gigabit cards, I think you're probably out

> of luck. 

> Will check with SysAdmins if the GigE we have

> supports. Are there any risks/disadvantages of using

> 9k frames for interconnect?

> 


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