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19990719: LDM Linux problem

------- Forwarded Message

>To: General Support <address@hidden>
>From: Gilbert Sebenste <address@hidden>
>Subject: To Robb Kambic: LDM Linux problem
>Organization: .
>Keywords: 199907191431.IAA16008

Hello,

I assume this message needs to go to Robb Kambic, but here goes!

I am having a problem running LDM under Linux. It is more of an
inconvenience than anything, but it is a serious one, and I believe
someone has come up with a solution that I'd like you to implement.

As far as I can tell, if I make my LDM queues very large, especially
larger than the amount of memory that my system has, it causes it to hang,
crash, or, in the case of shutting down and starting the LDM, it can cause
the machine to practically lock up for 20 minutes. I have just figured out
why: my beloved Linux has this glitch where it will literally store all
the data coming off the LDM until the RAM is full.

I have heard that David W. down at UIUC in Champaign has found a solution
to the bug. Could you PLEASE add this bugfix, or whatever works, so that
the LDM dumps the data right into the disk instead of storing it in
memory?

By the way, outside of this bug, which is fairly significant, I will
never, EVER use any flavor of Unix again besides Linux, so long as I have 
any say in it. It's stability, even with the problem noted above, is
worlds better than any other OS I've ever used. Frankly, I'd rather scrape
the back of my thighs with a cheese grater and then go on a plane ride
with the Kennedys rather than using Solaris ever again. That was
version 6; I've been told 7 is an entirely different and nasty ball
of whacks. Anyway, if it hasn't been said emphatically enough, thank you,
THANK you for supporting Linux versions of UNIDATA software!!!!

Please let me know the status of this. I am using Linux 5.2. on
weather.admin.niu.edu (primary) and weather3.admin.niu.edu (backup).
BTW, all my downstream sites have access to both machines now.

Gilbert

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Gilbert Sebenste                                                     ********
Internet: address@hidden    (My opinions only!)                     ******
Staff Meteorologist, Northern Illinois University                      ****
Work phone: 815-753-5492                                                ***
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