dmesg error ??


 
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Operating Systems HP-UX dmesg error ??
# 1  
Old 10-14-2003
dmesg error ??

Hi all,

I have a very weard error message in my dmesg output, and I cannot find the solution in google. Does anyone know what it might be ?

Equivalently mapped reserve pool exhausted;
Overall application performance may be improved by increasing the "eqmemsize" tunable parameter (currently set to "15")


The system is absolutely NOT bussy.

Thanks a lot for your suggestions in advance !!


Regs David
# 2  
Old 10-14-2003
Looking at your avatar, I assumed that you would be using SunOS. But is this a HP-UX question anyway?
# 3  
Old 10-14-2003
Hi Perderabo,

You caught me Smilie
I've been working for about two years at Sun Microsystems. Unfortunetly they had to cut on costs (I wasn't that expensiveSmilie, just like every other company. Therefor I have to work at an Insurance company and maintain HP servers.

However, I still have a first love. Whenever the occasion is there, I will do anything to get back in the "factory" again. I'm only 26 yet, so there is still a long way to go for me. I do know that the road will not be long for me and HP, just have too much trouble with the software and the support.
what about you, I have been trying to get some info about you, but it's very hard. I could only see a refference from you about a printer I believe it was an HP one Smilie Further there is nothing else. Do you have another name than Perderabo? One we know, One that has a more friendly meaning?

Regs David
# 4  
Old 10-14-2003
I didn't mean to bust you, I just wanted to be sure that I understood the problem. And yes, you have busted me, too. I admit it. Perderabo is not really my name. Smilie Seriously, the reason that I use a pseudonym is so I can remain anonymous. For some reason I find that to be unspeakably cool. I picked my name from the world of horror fiction. It was supposed to be so very obscure as to be unique. Unforutately several dozen other folks had the same idea... I occasionally use a printer, but I'm not well-known in the world of printers. Must be one of those fake Perderabo's running around. Smilie *sigh* I guess that I'll just have to think of them as assistants helping to preserve my anonymity.

I have worked with HP equipment for a very long time. Yes, the software and service sucks. I give thanks for that every day. Very few people can handle any HP software issue. Life is very sweet when you're one of them.

The PA-risc chip does not support address aliasing. A physical address can have only one virtual address. That's why a shared memory segment must be installed at the same virtual address for each process that uses it. If the physical address is the same as the virtual address, that is called equivalent mapping. Some drivers need to use equivalently mapped pages. Often the OS can find one just laying around. If it can't, it must dip into it's reserved pool of equivalently mapped pages. If they are all in use, the I/O must wait until one becomes available. The size of the reserve pool is eqmemsize. Each time that you see that message, I/O was deferred. If it only happened once, it's not a big deal. If it happens a lot, you want to increase eqmemsize. Proceed very slowly. Go from 15 to 20 and see how performance seems. Remember that you are dedicating physical memory to a specific purpose. I just looked at a bunch of HP systems... 27 is the largest value that I found.
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