On Fri, Jan 13, 2012 at 4:25 PM, Qiang Liu <qiang....@freescale.com> wrote: > From: Qiang Liu <b32...@freescale.com> > > Reduce interrupt singnals through reset Interrupt Coalescing Control Reg. > Increase the threshold value of interrupt and timer will reduce the number > of complete interrupt sharply. Improve the system performance effectively.
There is always a trade off of throughput and latency by using interrupt coalescing. It's not reasonable to assume that the throughput is the only factor to be considered and set the coalescing threshold and timeout to the max value by default. Have you carried out other benchmark like copying many small files? It will be safer to make the coalescing runtime configurable like the sata_mv driver, IMO. - Leo _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
