On Wed, Dec 09, 2015 at 10:22:12AM +1100, NeilBrown wrote: > > +/* > > + * We only need 2 bios per I/O unit to make progress, but ensure we > > + * have a few more available to not get too tight. > > + */ > > +#define R5L_POOL_SIZE 1024 > > + > > I'm really suspicious of big pool sizes. > The memory allocated to the pool is almost never used - only where no > other memory is available - so large pools are largely wasted. I originally had 16 here, andd incremented it for some debugging that stuck. I retested with 4 and that works as well. That will be included in the next resend. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
