Hyper Threading, should it turn on or off?

[trskopo]

Hi all,

I have windows 7 64bit pro with intel I7 and firebird 2.5.1 Super Classic.

Should I turn HT on or off to boost firebird's performance?

On some app, when HT is on, performance decrease, what about for firebird?

Thanks and regards,
Anto

[ma_golyo]

Hi!

HT is not good for databases beacuse of the shared cache, so it should be turned OFF.

http://blogs.msdn.com/b/slavao/archive/2005/11/12/492119.aspx

Post by trskopo
Hi all,
I have windows 7 64bit pro with intel I7 and firebird 2.5.1 Super Classic.
Should I turn HT on or off to boost firebird's performance?
On some app, when HT is on, performance decrease, what about for firebird?
Thanks and regards,
Anto

[Mark Rotteveel]

Post by ma_golyo
Hi!
HT is not good for databases beacuse of the shared cache, so it should be turned OFF.
http://blogs.msdn.com/b/slavao/archive/2005/11/12/492119.aspx

Shared cache only applies to SuperServer, which should be running on a
single CPU anyway. The hyperthreading (and OS support) of 8 years ago is
not the same as the multiple cores with shared elements of today. I'd
suggest to actually test it before just disabling something that might
actually be beneficial for performance.

Mark