aec103bfa6
Improve performance of memory allocations on ia64 by avoiding a global TLB purge to purge a single page from the file cache. This happens whenever we evict a page from the buffer cache to make room for some other allocation. Test case: Run 'find /usr -type f | xargs cat > /dev/null' in the background to fill the buffer cache, then run something that uses memory, e.g. 'gmake -j50 install'. Instrumentation showed that the number of global TLB purges went from a few millions down to about 170 over a 12 hours run of the above. The performance impact is particularly noticeable under virtualization, because a virtual TLB is generally both larger and slower to purge than a physical one. Signed-off-by: Christophe de Dinechin <ddd@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com> |
||
|---|---|---|
| .. | ||
| contig.c | ||
| discontig.c | ||
| extable.c | ||
| fault.c | ||
| hugetlbpage.c | ||
| init.c | ||
| ioremap.c | ||
| Makefile | ||
| numa.c | ||
| tlb.c | ||