I think one difference is in the tcl version itself; the latest
versions use a fast multithreaded allocator that allocates on average
slightly more than double the amount requestes, while earlier versions
may have been more frugal. You can cut your memory usage by a third or
more by increasing the number of buckets defined in tclThreadAlloc.c and
making the spacing closer; there will be a bit more constant overhead
and the allocator would run microscopically slower. You may also want
to look into the ttrace module which makes all the tcl interpreters
lazily load their code instead of loading everything up front which can
be a significant savings but I have had very little luck with it (I
think the openacs code does too many fancy things to work well with it).
-J
Guan Yang wrote:
Hi,
A couple of weeks ago I moved a number of servers to AOLserver 4.0.10
from various versions of 3.4 because of the 10^9 seconds problem. After
the move servers that were preivously using 100-120 MB of memory are
now using around 300 MB to 400 MB each.
I've tried to turn off or reduce adp and fastpath caches, reducing
maxthreds to the 40's level. Stacksize is 500k. We have used more or
less the same config files, with a few changes like the new nsopenssl
configuration format.
Has anyone else had experiences with memory usage after switching to
AOLserver 4.0, and is there any easy way to reduce it?
Thanks,
Guan
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