Bazaar support in OpenGrok
I have just added support for Bazaar repositories in OpenGrok, and thought that I should give you a warning before you start to use it...
First of all I would like to say that I have never used Bazaar in a real project, so I might have done everything totally wrong.
I am not aware of a API that lets me access Bazaar from Java, so I just created a small class that wraps the command line interface. This is the same way the Mercurial support is implemented, and most of the projects available at http://src.opensolaris.org/source use that back-end. Wrapping the binary do have a runtime-penalty, and that is the startup-cost of the binary. To reduce the number of times the binary is executed, OpenGrok already have a cache-layer for the history log (the cache-layer is not used if you try to get history information for a directory).
The biggest problem with Bazaar is that the bzr log -v command is unbelievable slow, and that is the command I need to run to get the history information (I need the files in the changeset). When I tried it on my computer, it used 13 MINUTES on the Bazaar source code itself. I got the repository with the following command:
$ bzr branch http://bazaar-vcs.org/bzr/bzr.dev bzr.dev
As a comparison hg log -v used ~ 2 secs on:
$ hg clone ssh://anon@hg.opensolaris.org/hg/onnv/onnv-gate
I would therefore not recommend that you use the Bazaar support on an OpenGrok server that serves multiple users. If you use it yourself, you should avoid accessing the directory history if you don't need it ;-)
Posted at 03:30PM Mar 17, 2008 by trond in OpenGrok | Comments[0]
OpenGrok v0.6 is out
I am glad to announce the release of OpenGrok 0.6. This release contains a lot of bug-fixes and some new features. Please see http://src.opensolaris.org/source/history/opengrok/trunk/ for the full change history, and for the list of contributors. The following is just a summary.
New Features:
Posted at 10:41AM Mar 12, 2008 by trond in OpenGrok | Comments[0]
Get it while it's hot!
Memcached 1.2.5 is being released today, so you should go ahead and download it. We are currently working on integrating this version into Solaris, but it is easy to compile it yourself if you don't want to wait for us ;-)
If you are running OpenSolaris build 79 (or newer), building 1.2.5 should be as easy as:
./configure --enable-threads --enable-64bit CC=cc CFLAGS=-O
I have added support for large memory pages in this version, but it is disabled by default. To enable the use of large memory pages you need to add -L to the command line. When started with -L memcached will also preallocate all memory up front and reduce the numbers of lock to acquire when the slab allocator needs to allocate more memory for a given slab class. By using large memory pages memcached could reduce the number of TLB misses (depending on the access pattern), and hence improve performance. See http://en.wikipedia.org/wiki/Translation_lookaside_buffer for a description of TLB.
Posted at 09:49PM Mar 03, 2008 by trond in Memcached | Comments[0]