Re: [uml-devel] Slower system call with SMP

2005-07-27 Thread Blaisorblade
On Monday 30 May 2005 20:58, Majid Salame wrote: > > UML uses multiple processes for it's buisness. > With Skas UML is just one process as it appears on the Host, or do you mean > something else. No, it's at least two (+ possible service threads): one is the thread executing kernel code, which pt

RE: [uml-devel] Slower system call with SMP

2005-05-31 Thread Majid Salame
Title: RE: [uml-devel] Slower system call with SMP Yes. And I am trying fork stress test. Majid. > -Original Message- > From: Jeff Dike [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, May 31, 2005 9:58 AM > To: Salame, Majid [CAR:2V62:EXCH] > Cc: user-m

Re: [uml-devel] Slower system call with SMP

2005-05-31 Thread Jeff Dike
> The cost of a system call it seems to be higher when > Running a RHE host with dual CPU (SMP turned on) and the image is patched > with skas patch. > > Doe that make sense ? Doing the same test by disabling SMP on the host, and > results are much faster. What exactly was the test? A getpid loo

RE: [uml-devel] Slower system call with SMP

2005-05-30 Thread Majid Salame
Title: RE: [uml-devel] Slower system call with SMP > UML uses multiple processes for it's buisness. With Skas UML is just one process as it appears on the Host, or do you mean something else. >When host is > SMP, these can be mapped to different cpu's, and when >

Re: [uml-devel] Slower system call with SMP

2005-05-30 Thread stian
> Doe that make sense ? Doing the same test by disabling SMP on the host, > and > results are much faster. > NOTE SMP is turned off for the UML. This is a shot from the hip, but UML uses multiple processes for it's buisness. When host is SMP, these can be mapped to different cpu's, and when inter

[uml-devel] Slower system call with SMP

2005-05-30 Thread Majid Salame
Title: Slower system call with SMP The cost of a system call it seems to be higher when Running a RHE host with dual CPU (SMP turned on) and the image is patched with skas patch. Doe that make sense ? Doing the same test by disabling SMP on the host, and results are much faster. NOTE SMP is