Przemyslaw Czerpak wrote:
Looks that there in no important difference between DL-MM and BCC-MM in
real MT programs in your system. DL has a little bit better performance.
In my test in Linux DL-MM in MT mode was killing the performance
in MT+ test in comparison to default SUSE malloc when in ST mode
it gives nearly the same results.
Hi,
here are some words about dlmalloc and multi-thread:
Thread-safety: NOT thread-safe unless USE_LOCKS defined
When USE_LOCKS is defined, each public call to malloc, free,
etc is surrounded with either a pthread mutex or a win32
spinlock (depending on WIN32). This is not especially fast, and
can be a major bottleneck. It is designed only to provide
minimal protection in concurrent environments, and to provide a
basis for extensions. If you are using malloc in a concurrent
program, consider instead using nedmalloc
(http://www.nedprod.com/programs/portable/nedmalloc/) or
ptmalloc (See http://www.malloc.de), which are derived
from versions of this malloc.
Best regards,
Mindaugas
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