On Sat, 9 Dec 2000, Mikulas Patocka wrote: > > I did a test. I disabled readahead except for reading all 4 buffers in > map_4sectors. > > I observed 14% slowdown on walking directories with find and 4% slowdown > on grepping one my working directory (10M, 281 files). > > If you can't make it otherwise you can rip readahead out. If there is a > possibility to keep it, it would be better. The absolutely best thing would be to keep the directories in the page cache. At which point the whole issue becomes pretty moot and we could use the page-cache readahead code. Which gets the end right, and can handle stuff that isn't physically contiguous on disk. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
- Re: [PATCH] Re: kernel BUG at bu... Linus Torvalds
- Re: [PATCH] Re: kernel BUG at bu... Alexander Viro
- Re: [PATCH] Re: kernel BUG at bu... Linus Torvalds
- Re: [PATCH] Re: kernel BUG at bu... Alexander Viro
- Re: [PATCH] Re: kernel BUG at bu... Linus Torvalds
- Re: [PATCH] Re: kernel BUG at bu... Linus Torvalds
- Re: [PATCH] Re: kernel BUG at bu... Alexander Viro
- Re: [PATCH] Re: kernel BUG at bu... Andries Brouwer
- Re: [PATCH] Re: kernel BUG at bu... Alexander Viro
- Re: [PATCH] Re: kernel BUG at bu... Mikulas Patocka
- Re: [PATCH] Re: kernel BUG at bu... Linus Torvalds
- Re: [PATCH] Re: kernel BUG at bu... Linus Torvalds
- Re: [PATCH] Re: kernel BUG at bu... Andi Kleen
- Re: [PATCH] Re: kernel BUG at bu... David S. Miller
- Re: [PATCH] Re: kernel BUG at buffer... David Woodhouse
- Re: [FIXED!] kernel BUG at buffer.c:827 in test12-pre6 and... Joseph Cheek