Re: freebsd vs linux: performance problem

2007-12-13 Thread Erich Dollansky
Hi, Shantanu Ghosh wrote: --- Erich Dollansky <[EMAIL PROTECTED]> wrote: Shantanu Ghosh wrote: --- Erich Dollansky <[EMAIL PROTECTED]> wrote: I have had once the problem of a task moving from CPU to CPU and s performing badly on FreeBSD. I am not informed how this is handl

Re: freebsd vs linux: performance problem

2007-12-13 Thread Erich Dollansky
Hi, Shantanu Ghosh wrote: --- Erich Dollansky <[EMAIL PROTECTED]> wrote: Don't you call memcpy? Well, I first did - then I wrote a function to do the same, just to make sure that the code executed is exactly the same in both the cases. The difference was there both when using

Re: freebsd vs linux: performance problem

2007-12-13 Thread Erich Dollansky
Hi, Nash Nipples wrote: sounds like a power unit problem. try to switch them and repeat. hey, in the next step you tell him that the MTU is set wrongly. Now, in simple memory access operations, I see the freebsd system being noticably slower than the linux system. A simple C program that co

Re: AMD or Intel?

2007-09-10 Thread Erich Dollansky
Hi, Martin Cracauer wrote: For integer workloads Intel's Core2-base Xeons outperforms K8 (the old-school AMD64) by about 25-30% per clock per core. K10 seems to be 5-15% faster than K8 for integer workloads (I hope to run my benchmark suite on one thi week or weekend). the guys at heise.de pu

Re: AMD or Intel?

2007-09-10 Thread Erich Dollansky
Hi, Palle Girgensohn wrote: Now, I hear rumors that AMD is to be preferred over Intel for performance reasons. Any comments on that? Are we better off getting AMD processors, when running Unix? AMD announced today the new quad core. Their benchmarks are promising. But not the dual core ve

Re: AMD or Intel?

2007-09-10 Thread Erich Dollansky
Hi, Palle Girgensohn wrote: Now, I hear rumors that AMD is to be preferred over Intel for performance reasons. Any comments on that? Are we better off getting AMD processors, when running Unix? AMD announced today the new quad core. Their benchmarks are promising. But not the dual core ver

Re: Dual-core CPU vs. very large cache

2006-04-25 Thread Erich Dollansky
Hi, Bill Moran wrote: We have some database servers that we're looking to replace with beefier hardware, mainly because we're expecting our customer base to grow a lot in the near future. The current hw is Dell 2850 servers. These are dual proc (each proc is hyperthreaded) with Dell PERC cont