Re: 20030425LDM-RAP ofour and iita

Celia,

OK ..for clarification, chisel is the only machine feeding from thelma?

Jeff
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Jeff Weber                                    address@hidden        :
Unidata Program Center                        PH:303-497-8676        :
University Corp for Atmospheric Research      3300 Mitchell Ln       :
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000  :
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On Fri, 25 Apr 2003, Celia Chen wrote:

> Okay,
>
> I have just reconfigure the ldmd.conf on chisel to feed both
> iita and ofour with the NEXRAD data.
>
> I am waiting to hear from our system admin staff about the
> TCP window size.  Please let me know if you see a difference in
> thelma's load after the change I made.
>
> Thanks.
>
> Celia
>
> On Fri, Apr 25, 2003 at 03:50:39PM -0600, Jeff Weber wrote:
> > Celia,
> >
> > Your two machines feeding from thelma are the biggest users of the cpu...
> >
> > It really is not OK to have them both feed from thelma, we can set-up a
> > failover site for the other machine to aide in case of failure.
> >
> > You should feed from thelma from the biggest TCP window size machine..
> >
> > iita is also generating about 95% of our re-class messages.
> >
> > We need to clean this up as it is impacting thelma.
> >
> > I have no info re chisel, I suggest contacting your sys admin.
> >
> > Please keep me informed as to what you decide, but we must get to one
> > machine, and it should be running LDM 6, and hopefully an expanded TCP
> > window size.
> >
> > Thanks,
> >
> > Jeff
> > ---------------------------------------------------------------------
> > Jeff Weber                                    address@hidden        :
> > Unidata Program Center                        PH:303-497-8676        :
> > University Corp for Atmospheric Research      3300 Mitchell Ln       :
> > http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000  :
> > ---------------------------------------------------------------------
> >
> > On Fri, 25 Apr 2003, Celia Chen wrote:
> >
> > > Hi Jeff,
> > >
> > > I have upgraded chisel's LDM to 6.0.10 and will be doing the upgrades
> > > for the other LDM servers at RAP next week.
> > >
> > > Do you have the TCP info on chisel?  I don't know about this
> > > TCP receive window size issre.  But if chisel has a bigger size
> > > I can feed ofour from chisel.  I would like to have thelma
> > > feed two of RAP's LDM machines just in case something
> > > happens to one.
> > >
> > > If ofour has the smaller TCP receive window size, should I set
> > > up to feed ofour from iita, instead of "have iita feed from
> > > ofour"?
> > >
> > > Thanks.
> > >
> > > Celia
> > >
> > >
> > > On Fri, Apr 25, 2003 at 02:59:57PM -0600, Jeff Weber wrote:
> > > > Celia,
> > > >
> > > > #1 ofour.rap.ucar.edu and #2 iita.rap.ucar.edu.  Both are requesting
> > > > the same data;
> > > >
> > > >   topo:  ofour.rap.ucar.edu NNEXRAD|CONDUIT|UNIDATA
> > > >   topo:  iita.rap.ucar.edu NNEXRAD|DIFAX|CONDUIT|FSL2|UNIDATA
> > > >
> > > > and they both have small TCP receive window sizes (ofour is very small).
> > > > I'd recommend at least 64k, maybe even 128k.
> > > >
> > > >  thelma.ldm           ofour.rap.ucar.edu.36202  2920   1851  64240   0 
> > > > EST
> > > >  thelma.ldm           iita.rap.ucar.edu.2851   28960   2363 131768   0 
> > > > EST
> > > >                                                ^^^^^
> > > >
> > > >
> > > > Please have iita feed from ofour (and not thelma), and if you could
> > > > contact your sysadmin re the TCP receive window sizes, it would be 
> > > > helpful
> > > > for both parties.
> > > >
> > > > Also, please upgrade to LDM 6.0.10 asap, it will improve your 
> > > > performance
> > > > greatly..
> > > >
> > > > http://my.unidata.ucar.edu/content/software/ldm/ldm-6.0.10/index.html
> > > >
> > > > Please keep me posted as to the progress of these requests.
> > > >
> > > > Thank you,
> > > >
> > > > -Jeff
> > > > ____________________________                  _____________________
> > > > Jeff Weber                                    address@hidden
> > > > Unidata Support                               PH:303-497-8676
> > > > University Corp for Atmospheric Research      3300 Mitchell Ln
> > > > http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000
> > > > ________________________________________      ______________________
> > >
>