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| author | Nick Mathewson <nickm@torproject.org> | 2007-12-26 00:12:08 +0000 |
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| committer | Nick Mathewson <nickm@torproject.org> | 2007-12-26 00:12:08 +0000 |
| commit | a7ef07b4bd3a4a3ba66336601e5a27649cb923d9 (patch) | |
| tree | 7a38a26ea71a0ead464c54d0b8d58ec7330877f8 /ChangeLog | |
| parent | 1401bc54f4b8aeeea21950ad20e8d79ffc87ba0b (diff) | |
| download | tor-a7ef07b4bd3a4a3ba66336601e5a27649cb923d9.tar.gz tor-a7ef07b4bd3a4a3ba66336601e5a27649cb923d9.zip | |
r15693@tombo: nickm | 2007-12-25 19:11:29 -0500
Here, have some terribly clever new buffer code. It uses a mbuf-like strategy rather than a ring buffer strategy, so it should require far far less extra memory to hold any given amount of data. Also, it avoids access patterns like x=malloc(1024);x=realloc(x,1048576);x=realloc(x,1024);append_to_freelist(x) that might have been contributing to memory fragmentation. I've tested it out a little on peacetime, and it seems to work so far. If you want to benchmark it for speed, make sure to remove the #define PARANOIA; #define NOINLINE macros at the head of the module.
svn:r12983
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -1,3 +1,11 @@ +Changes in version 0.2.0.16-alpha - 2008-01-?? + o Major performance improvements: + - Switch our old ring buffer implementation for one more like that + used by free Unix kernels. The wasted space in a buffer with + 1mb of data will now be more like 8k than 1mb. The new + implementation also avoids realloc();realloc(); patterns that + can contribute to memory fragmentation. + Changes in version 0.2.0.15-alpha - 2007-12-25 o Major bugfixes: - Fix several remotely triggerable asserts based on DirPort requests |