| commit | 93992dc9adff19ba1fc7dbc18499aa0f78aba2d5 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Tue, 8 Sep 2009 02:21:34 +0000 (7 19:21 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Tue, 8 Sep 2009 02:21:34 +0000 (7 19:21 -0700) | ||
| tree | 57bd342ed0f2fda93b8ab2e3d8b01e1c18885b77 | treesnapshot (tar.gz zip) |
| parent | 727afe75ef752829158e906c5b86991478fece53 | commitdiff |
Remove nearly all MP contention from ip_randomid()
* Instead of using two global spinlocks split the id space up into
ncpus_fit independant sections and shuffle within each section.
* Aggregate the random number generation into blocks of 32, on a
per-cpu basis, to reduce cpu contention there.
Using-test-output-by: Aggelos Economopoulos <aoiko@cc.ece.ntua.gr>
* Instead of using two global spinlocks split the id space up into
ncpus_fit independant sections and shuffle within each section.
* Aggregate the random number generation into blocks of 32, on a
per-cpu basis, to reduce cpu contention there.
Using-test-output-by: Aggelos Economopoulos <aoiko@cc.ece.ntua.gr>
| sys/netinet/ip_id.c | diffblobblamehistory |