Re: Does my processor support 64bit kernel?

[Mayuresh <mayuresh%acm.org@localhost>]

On Wed, Feb 12, 2014 at 05:52:26PM +0700, Robert Elz wrote:
>       cpuctl identify 0 | grep EM64T

Thanks.

Yes, it's there. Pasting full output just in case anyone finds any other
observation:

Trying out iso will of course remove the remaining doubts.

# cpuctl identify 0
cpu0: Intel (686-class), 2997.21 MHz, id 0xf65
cpu0: features  0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features  0xbfebfbff<PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR>
cpu0: features  0xbfebfbff<SSE,SSE2,SS,HTT,TM,SBF>
cpu0: features2 0xe49d<SSE3,DTES64,MONITOR,DS-CPL,EST,CID,CX16,xTPR,PDCM>
cpu0: features3 0x20100000<XD,EM64T>
cpu0: features4 0x1<LAHF>
cpu0: "Intel(R) Pentium(R) D CPU 3.00GHz"
cpu0: I-cache 12K uOp cache 8-way, D-cache 16KB 64B/line 8-way
cpu0: L2 cache 2MB 64B/line 8-way
cpu0: ITLB 4K/4M: 128 entries
cpu0: DTLB 4K/4M: 64 entries
cpu0: Initial APIC ID 0
cpu0: Cluster/Package ID 0
cpu0: Core ID 0
cpu0: family 0f model 06 extfamily 00 extmodel 00 stepping 05
cpu0: UCode version: ?

> (since you know it is an Intel processor already, if it was an AMD
> processor that would need modifying).  If a line containing EM64T is
> output, you have a processor that can run 64 bit if you want it to
> (which doesn't necessarily mean that you should - it all depends upon
> how much RAM you have (and want, and can fit in the motherboard) and
> what kind of applications you run.

RAM 2GB.

Among CPU intensive, I run wine - a situation where I have no choice but
to run a Windows exe that shows flash animations etc. All that is terribly
slow.

Second one is winxp on qemu, which runs slow as well.

If amd64 could run these two better than i386, it'd be worth a try.


Will I need to rebuild pkg applications to amd64 to see benefit if any?

If yes, is it sufficient to rebuild only wine and qemu or all their
dependencies as well?

Mayuresh