Re: [Re: paging behavior in Linux]

2001-03-02 Thread Jeremy Jackson
Manfred Spraul wrote: > Neelam Saboo wrote: > > > > hi, > > > > After I installed a newer version of Kernel (2.4.2) and enable DMA option in Ah hah! There's a huge difference in performance (in my experience) with DMA. also, using hdparm utility, *most* drives work fine with dma, irq unmasking

Re: [Re: paging behavior in Linux]

2001-03-02 Thread Manfred Spraul
Neelam Saboo wrote: > > hi, > > After I installed a newer version of Kernel (2.4.2) and enable DMA option in > hardware configuration, the behavior changes. > I can see performance improvements when another thread is used. Also, i can > see timing overlaps between two threads. i.e. when one thre

Re: [Re: paging behavior in Linux]

2001-03-01 Thread Helge Hafting
Neelam Saboo wrote: > > Another observation. I have two independent programs. One program incurring > page faults and another program just doing some work. > When work program run undependently it takes ~19 seconds of CPU time, but when > it is run along with page faulting program on the same mac

Re: [Re: paging behavior in Linux]

2001-02-28 Thread Neelam Saboo
Another observation. I have two independent programs. One program incurring page faults and another program just doing some work. When work program run undependently it takes ~19 seconds of CPU time, but when it is run along with page faulting program on the same machine, it takes ~32 seconds of C

Re: [Re: paging behavior in Linux]

2001-02-28 Thread Neelam Saboo
Another observation. I have two independent programs. One program incurring page faults and another program just doing some work. When work program run undependently it takes ~19 seconds of CPU time, but when it is run along with page faulting program on the same machine, it takes ~32 seconds of C