Discussion:
Real vs available memory
(too old to reply)
Frank Seltzer
2014-12-09 15:24:26 UTC
Permalink
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get this
during boot.

real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)

How do I get use of the full 8 gigs?

Thanks,
Frank
Brooks Davis
2014-12-09 15:33:47 UTC
Permalink
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get this
during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
You haven't posted a "uname -a" so I can't be sure, but I'd guess you've
installed FreeBSD i386 which is 32-bit and need to reinstall with amd64.

-- Brooks
p***@patpro.net
2014-12-09 15:33:55 UTC
Permalink
Hello,

what do you get with uname -rm ?
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have added another 4 gigs but there is a problem using it. The system BIOS sees the additional 4 gigs and apparently so does FreeBSD but I get this during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
Thanks,
Frank
_______________________________________________
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
Frank Seltzer
2014-12-09 15:57:59 UTC
Permalink
Post by p***@patpro.net
Hello,
what do you get with uname -rm ?
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have added another 4 gigs but there is a problem using it. The system BIOS sees the additional 4 gigs and apparently so does FreeBSD but I get this during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
Thanks,
Frank
_______________________________________________
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
uname -rm
10.1-STABLE i386
p***@patpro.net
2014-12-09 15:59:53 UTC
Permalink
Post by p***@patpro.net
uname -rm
10.1-STABLE i386
Go 64 bit if your processor supports it.
RW
2014-12-09 15:33:57 UTC
Permalink
On Tue, 9 Dec 2014 10:19:31 -0500 (EST)
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I
have added another 4 gigs but there is a problem using it. The
system BIOS sees the additional 4 gigs and apparently so does FreeBSD
but I get this during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
If it's because you're using the i386 version, you need to install
amd64 version instead.
Frank Seltzer
2014-12-11 00:02:40 UTC
Permalink
Post by RW
On Tue, 9 Dec 2014 10:19:31 -0500 (EST)
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I
have added another 4 gigs but there is a problem using it. The
system BIOS sees the additional 4 gigs and apparently so does FreeBSD
but I get this during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
At the suggestion of several of you I have installed AMD64 in place of
i386 and all is well.

Thanks everyone.

Frank

Mike Tancsa
2014-12-09 15:34:59 UTC
Permalink
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get this
during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
What does
uname -a
show ? Are you by chance running i386 inadvertently ?

---Mike
--
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, ***@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada http://www.tancsa.com/
Frank Seltzer
2014-12-09 16:00:56 UTC
Permalink
Post by Mike Tancsa
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get this
during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
What does
uname -a
show ? Are you by chance running i386 inadvertently ?
---Mike
FreeBSD xxx.xxx.xxx 10.1-STABLE FreeBSD 10.1-STABLE #0 r275606: Mon Dec 8
14:36:16 EST 2014 ***@xxx.xxx.xxx:/usr/obj/usr/src/sys/GENERIC i386

Should I be running something else?
Daniel Mayfield
2014-12-09 16:04:50 UTC
Permalink
Run this command:

sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu’

If you see “amd64” in there, you want the 64 bit (amd64) version of FreeBSD. If you don’t, you’re out of luck.

Dan
Post by Frank Seltzer
Post by Mike Tancsa
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get this
during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
What does
uname -a
show ? Are you by chance running i386 inadvertently ?
---Mike
Should I be running something else?
_______________________________________________
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
Frank Seltzer
2014-12-09 16:08:06 UTC
Permalink
sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu?
If you see ?amd64? in there, you want the 64 bit (amd64) version of FreeBSD. If you don?t, you?re out of luck.
Dan
Post by Mike Tancsa
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get this
during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
What does
uname -a
show ? Are you by chance running i386 inadvertently ?
---Mike
***@xxx:/home/frank_s % sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu'
hw.machine: i386
hw.model: AMD Phenom(tm) II X6 1035T Processor
hw.ncpu: 6
hw.machine_arch: i386
p***@patpro.net
2014-12-09 16:13:00 UTC
Permalink
Post by Frank Seltzer
hw.machine: i386
hw.model: AMD Phenom(tm) II X6 1035T Processor
hw.ncpu: 6
hw.machine_arch: i386
You cannot use a 64 bit version of FreeBSD, so you must compile your own kernel with PAE:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/book.html#memory-i386-over-4gb
p***@patpro.net
2014-12-09 16:24:52 UTC
Permalink
hmm my bad.
strange indeed to read hw.machine i386 when it's 64 bit capable.
Patpro,
Is there a reason your saying Frank can¹t use 64 bit version of freebsd?
That cpu is 64 bit capable. The hw.machine and hw.machine_arch just seem
to be reporting i386 because that¹s the installed software version.
‹Nick
Post by p***@patpro.net
Post by Frank Seltzer
'hw.machine|hw.model|hw.ncpu'
hw.machine: i386
hw.model: AMD Phenom(tm) II X6 1035T Processor
hw.ncpu: 6
hw.machine_arch: i386
https://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/book.html#memory-i38
6-over-4gb
_______________________________________________
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
To unsubscribe, send any mail to
Hans Petter Selasky
2014-12-09 16:28:02 UTC
Permalink
Post by p***@patpro.net
hmm my bad.
strange indeed to read hw.machine i386 when it's 64 bit capable.
Maybe you can build and install a 64-bit kernel only, and the re-boot,
but userspace will still be 64-bit :-)

--HPS
Hans Petter Selasky
2014-12-09 16:38:35 UTC
Permalink
Post by Hans Petter Selasky
Maybe you can build and install a 64-bit kernel only, and the re-boot,
but userspace will still be 64-bit :-)
.. userspace will still be 32-bit ...

--HPS
Wolff, Nicholas (Nick)
2014-12-09 16:36:57 UTC
Permalink
Patpro,

Is there a reason your saying Frank can¹t use 64 bit version of freebsd?
That cpu is 64 bit capable. The hw.machine and hw.machine_arch just seem
to be reporting i386 because that¹s the installed software version.

‹Nick
Post by p***@patpro.net
Post by Frank Seltzer
'hw.machine|hw.model|hw.ncpu'
hw.machine: i386
hw.model: AMD Phenom(tm) II X6 1035T Processor
hw.ncpu: 6
hw.machine_arch: i386
https://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/book.html#memory-i38
6-over-4gb
_______________________________________________
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
To unsubscribe, send any mail to
Jan Bramkamp
2014-12-10 03:29:26 UTC
Permalink
Post by Frank Seltzer
'hw.machine|hw.model|hw.ncpu'
hw.machine: i386
hw.model: AMD Phenom(tm) II X6 1035T Processor
hw.ncpu: 6
hw.machine_arch: i386
Reinstall your system from a FreeBSD/amd64 install medium. Your CPU is
amd64 compatible. You can't use more than 4GiB RAM with FreeBSD/i386
unless you build a PAE kernel and even with PAE you are restricted to
4GiB per address space and I/O has to pass through bounce buffers.
Mehmet Erol Sanliturk
2014-12-09 19:36:26 UTC
Permalink
Post by Daniel Mayfield
sysctl -a | egrep -i 'hw.machine|hw.model|hw.ncpu’
If you see “amd64” in there, you want the 64 bit (amd64) version of
FreeBSD. If you don’t, you’re out of luck.
Dan
Post by Frank Seltzer
Post by Mike Tancsa
Post by Frank Seltzer
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have
added another 4 gigs but there is a problem using it. The system BIOS
sees the additional 4 gigs and apparently so does FreeBSD but I get
this
Post by Frank Seltzer
Post by Mike Tancsa
Post by Frank Seltzer
during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
What does
uname -a
show ? Are you by chance running i386 inadvertently ?
---Mike
FreeBSD xxx.xxx.xxx 10.1-STABLE FreeBSD 10.1-STABLE #0 r275606: Mon Dec
Should I be running something else?
_______________________________________________
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
To unsubscribe, send any mail to "
If "amd54" does not appear , i386 PAE ( which is 36 bits means up to 64
Giga Bytes ) may be used .


Thank you very much .

Mehmet Erol Sanliturk
Mike Tancsa
2014-12-09 16:10:19 UTC
Permalink
Post by Frank Seltzer
Post by Mike Tancsa
Post by Frank Seltzer
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
What does
uname -a
show ? Are you by chance running i386 inadvertently ?
---Mike
FreeBSD xxx.xxx.xxx 10.1-STABLE FreeBSD 10.1-STABLE #0 r275606: Mon Dec
Should I be running something else?
i386 is a 32 bit kernel and without PAE extensions, you cannot make use
of the extra memory. Going to 64bit means you can use all of the RAM in
your machine, but it means reinstalling.
see

https://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/hardware.html

as a start.

---Mike
--
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, ***@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada http://www.tancsa.com/
Frank Seltzer
2014-12-09 15:47:55 UTC
Permalink
I have a Dell Studio XPS 7100 that came with 4 gigs of memory. I have added
another 4 gigs but there is a problem using it. The system BIOS sees the
additional 4 gigs and apparently so does FreeBSD but I get this during boot.
real memory = 8589934592 (8192 MB)
avail memory = 3400794112 (3243 MB)
How do I get use of the full 8 gigs?
Thanks,
Frank
Forgot to say this is on 10.1-STABLE FreeBSD 10.1-STABLE #0 r275606
Loading...