> include/linux/pagevec.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h > index fcc06c300a72..5d3a0cccc6bf 100644 > --- a/include/linux/pagevec.h > +++ b/include/linux/pagevec.h > @@ -11,8 +11,8 @@ > > #include <linux/types.h> > > -/* 15 pointers + header align the folio_batch structure to a power of two */ > -#define PAGEVEC_SIZE 15 > +/* 31 pointers + header align the folio_batch structure to a power of two */ > +#define PAGEVEC_SIZE 31 > > struct folio; > Hi, Thanks for the patch. I tested the patch with will-it-scale page-fault2 on AMD Zen 4 EPYC server (2-socket system with 128 cores per socket, SMT Enabled). Increasing the folio batch size from 15 to 31 gives following performance improvement: Median: 8.32% Max: 23.15% 99th percentile: 20.95% There is slight performance degradation (bound by -1.21%) in a few cases. The patch seems to be beneficial for AMD systems as well. Tested-by: Shivank Garg <shivankg@xxxxxxx> -- Best Regards, Shivank
