re: mmap over nfs leads to excessive system load

[Kenny Simpson]

Just another data point....
If I open the file with O_DIRECT.. not much changes:

samples  %        image name               app name                 symbol name
12585321 18.9373  vmlinux-2.6.14           vmlinux-2.6.14           find_get_pages_tag
8608887  12.9539  vmlinux-2.6.14           vmlinux-2.6.14           mpage_writepages
6870600  10.3383  vmlinux-2.6.14           vmlinux-2.6.14           unlock_page
6605417   9.9393  vmlinux-2.6.14           vmlinux-2.6.14           clear_page_dirty_for_io
6259207   9.4183  vmlinux-2.6.14           vmlinux-2.6.14           release_pages
3249493   4.8896  vmlinux-2.6.14           vmlinux-2.6.14           __lookup_tag
3248871   4.8886  vmlinux-2.6.14           vmlinux-2.6.14           pci_conf1_write
2677914   4.0295  vmlinux-2.6.14           vmlinux-2.6.14           page_waitqueue
982811    1.4789  vmlinux-2.6.14           vmlinux-2.6.14           _read_lock_irqsave
917165    1.3801  vmlinux-2.6.14           vmlinux-2.6.14           _read_unlock_irq
758960    1.1420  vmlinux-2.6.14           vmlinux-2.6.14           __wake_up_bit
706607    1.0632  vmlinux-2.6.14           vmlinux-2.6.14           _spin_lock_irqsave


-Kenny



	
		
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