doc: technical/memory: add note about mwrap-perl

It's already fixed memory usage problems not only in our codebase,
but also the standard `Encode' XS module and `git pack-objects'.

diff --git a/Documentation/technical/memory.txt b/Documentation/technical/memory.txt
index ea7fb7b710e1673f196576203aa76b6ede1e2a21..a35b2c7344098fdf5b8ab41d427e821038bf6644 100644 (file)
--- a/Documentation/technical/memory.txt
+++ b/Documentation/technical/memory.txt
@@ -48,3 +48,9 @@ In the future, our internal data model will be further
 flattened and simplified to reduce the overhead imposed by
 small objects.  Large allocations may also be avoided by
 optionally using Inline::C.
+
+Finally, the mwrap-perl LD_PRELOAD wrapper was ported to Perl 5
+and enhanced to provide live memory usage tracking on 64-bit systems
+with minimal performance impact on production traffic:
+
+       git clone https://80x24.org/mwrap-perl.git