[lug] Issues with RedHat Enterprise

Steve A Hart Shart at colorado.edu
Tue Mar 18 18:02:53 MDT 2008

Yes, I have been reading about many distros having issues with the 
current firefox.  Rumor is that Firefox3 will deal with the problem.

I'm more concerned about matlab and the c++ compilers working  obscenely 
slow.  Dan, I did check nfs and the server has some slow periods due to 
heavy nfs traffic but the clients seem to be running smoothly.  Hugh, do 
you find that processes like matlab take longer to processin your setup 
on the Ent5 clients?  Sounds like you have a similar setup to my system.

I know the c++ problem has something to do with my specific network and 
the 2 subnets I manage but I was hoping that someone on here might have 
heard of other issues going on between Ent4 and Ent5.


Hugh Brown wrote:
> We've had issues with firefox randomly crashing (ditto for 
> thunderbird) that started shortly after the last pair of updates for 
> both packages.
> The redhat mailing list had some traffic about a user having bad 
> performance with glibc on RH5 (as compared to SuSE and RH4).
> We are running RH5 clients with all software installed locally and 
> home dirs NFS mounted from an HP-UX box.
> Hugh
> User Dan Ferris wrote:
>> So I'm taking it that the compiler wasn't NFS like I had originally 
>> thought :(
>> Bummer...
>> The Firefox thing definatly sounds like libraries.
>> I have no idea about the Matlab issue.
>> Dan
>> On Tue, 18 Mar 2008, Steve A Hart wrote:
>>> OK..here's the rundown...
>>> Server is running RedHat Enterprise 4
>>> All Clients running RedHat Enterprise 5 Client
>>> All programs are compiled for RedHat Ent4 and are stored in 
>>> /usr/local. /usr/local and all home directories are stored on the 
>>> server and automounted to the clients.
>>> Of course now that I have all my clients running RHEnt5 I'm starting 
>>> to see some issues pop up.
>>> 1.  Firefox tends to crash randomly.  Traced problem to a possible 
>>> interaction issue between the compiled program in RHEnt4 and the 
>>> support libraries needed by firefox that are found on the Ent5 clients.
>>> 2.  Some Matlab scripts are running slow.  A code that took 0.1 
>>> seconds to run before the upgrade now takes 35 seconds to run
>>> 3.  C++ compilers that came with Ent5 on the clients seems to run 
>>> slow as well.
>>> Does anyone know of any problems between RedHat Ent4 and Ent5?  I 
>>> mean I know they are different versions but they can't be THAT 
>>> different from each other. I'd expect interaction problems between 
>>> Redhat and say Ubuntu systems for example but not two sucessive 
>>> versions of RedHat Enterprise.
>>> Thanks
>>> Steve
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