Bastian Blank wrote:
Setting it to 255 needs 2MiB of image size and unswappable memory. | text data bss dec hex filename | 1345623 3148364 417112 4911099 4aeffb x86_64-255/vmlinux | 1339887 380556 273880 1994323 1e6e53 x86_64-32/vmlinux It adds 32 interrupt vectors (a 32 bytes or so) for each new cpu into the data section, maybe this can be changed to dynamic allocation some time as this does not look like a critical path.
I would think that for most of the x86_64 machines, a 2MB increase in memory usage is acceptable? Most of them are probably equiped with at least 1Gb.
I don't think this is exchange of different resources. I know there are already machines with nearly 200 cores out there and even Xen choked on them. Maybe setting it to 64 will be okay for now.
OK, setting it to 64 will certainly help during the Lenny lifecycle. Thanks, Rik Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm