Redhat 8 do not show total 4 GB ram? show 3GB only..Why?

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pr@k@sh

Journeyman
My Dear friends

I have AMD server in that I Installed 4 Gb ram at boot time (POST)

it show full 4 GB ram but when Linux Redhat 8 but

in that it show only 3 GB only ..!! :shock:

so why this happend if any buddy know plese

help me..!!

Thanks in Adv..!!
 

mehulved

18 Till I Die............
Though I'm not sure but i think since RHL 8 is way old it might not be supporting this much amount of memory. Why don't you switch over to a newer version?
 

pradeep_chauhan

Cyborg Agent
Its something to do with the chipset limitation i think I read someware that if u populate all four dimms with 1GB dimms the total memory recognised is less. Please see /proc/meminfo and see the details. also use free to get a quick update. Is it 3GB everywear?
 
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pr@k@sh

Journeyman
Thanks but 4GB is installed and it show in POST also..!!

but i here from some1 that if in system have ram more then 3 GB then

kernel take 1 GB for it's own use and 3GB is for aplication....

can any but help me..!!

but i have 2 use Redhat 8 only becoz some software which support only redhat 8 only... so is there any solution...??

Actualy same problem with 2 servers...!!

so i think it's problem of Redhat 8 but is there any solution... 4 this problem..!!
 

desertwind

Cyborg Agent
ok,
RH8 supports 4GB RAM for sure. but the maximum memory that can be take up by an individual process is 3GB. You can acheive to a maximum of 3.5 GB by some kernel tweaking.

Please post the output of the following here.
Code:
$ cat /proc/meminfo

BTW, What software is woking with RH8 only ?
 
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pr@k@sh

Journeyman
thanks 4 ur help..!!

actualy i m only install linux .. and my DBA install orecal 9i

actualy i don't know much about linux...

i have 2 install only linux... that it...

actualy my DBA told me that Redhat 8 only redhat 8 have 2 installed for orecal 9i...!!

but if i m install Fedora core 4 (latest) or mandrec or suzi linux... the new verson...

then i can get 4 GB total ram..??

so can any buddy told me Ferora core 4 support full 4 GB ram or in that also i can get only 3 GB or 3.5 GB ..? let know .. then i will try on fedora core 4 also..!!

Thanks 4 ur help..!!
 
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pr@k@sh

Journeyman
Thanks but 2.6 kernels is with fedora core 3..??

let me know then i will install fedora core 3 and let try..!! :lol:
 

e-freak

Broken In
pr@k@sh said:
thanks 4 ur help..!!

actualy i m only install linux .. and my DBA install orecal 9i

actualy i don't know much about linux...

We can see that from the rest of your post! :p

pr@k@sh said:
i have 2 install only linux... that it...

actualy my DBA told me that Redhat 8 only redhat 8 have 2 installed for orecal 9i...!!

but if i m install Fedora core 4 (latest) or mandrec or suzi linux... the new verson...

then i can get 4 GB total ram..??

so can any buddy told me Ferora core 4 support full 4 GB ram or in that also i can get only 3 GB or 3.5 GB ..? let know .. then i will try on fedora core 4 also..!!

Thanks 4 ur help..!!
 
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