[Pkg-openldap-devel] Bug#421946: openldap2.3: build against newer Berkeley DB

[Clint Adams]

On Mon, Oct 08, 2007 at 09:00:17PM -0700, Howard Chu wrote:
> I've just rerun my tests using both BDB 4.2.52 and 4.6.21 and the 
> behavior is as expected. On an otherwise idle machine, both perform well, 
> completing our concurrency test in about 31 seconds.
>
> With a CPU-hog running in the background, the test with BDB 4.2.52 takes 
> only 37 seconds, while BDB 4.6.21 takes 1:42. Watching with top you can 
> see that BDB 4.6.21 gets a lot less CPU than BDB 4.2.52. This is the 
> problem with using yield() on an NPTL system - whereas on most POSIX 
> systems yield() only yields control to some other thread in the current 
> process, on NPTL yield() gives up the CPU for the entire process.

Were these run with or without a ShmKey / DB_SYSTEM_MEM ?