Messages in this thread | | | Date | Sat, 9 Jan 1999 21:35:40 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Results: pre6 vs pre6+zlatko's_patch vs pre5 vs arcavm13 |
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On Sat, 9 Jan 1999, Steve Bergman wrote: > > I ran the "image test" (loading 116 jpg images simultaneously) on the latest > patches and got these results in 128MB (I end up with ~ 160MB in swap): > > pre6+zlatko's_patch 2:35 > pre6 2:27 > pre5 1:58 > arcavm13 9:13
Can you run pre6+zlatko with just the mm/page_alloc.c one-liner reverted to pre5? That is, take pre6+zlatko, and just change
try_to_free_pages(gfp_mask, freepages.high - nr_free_pages);
back to
try_to_free_pages(gfp_mask, SWAP_CLUSTER_MAX);
That particular one-liner was almost certainly a mistake, it was done on the mistaken assumption that the clustering problem was due to insufficient write-time clustering - while zlatko found that it was actually due to fragmentation in the swap area. With zlatkos patch, the original SWAP_CLUSTER_MAX is probably better and almost certainly results in smoother behaviour due to less extreme free_pages..
Linus
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