Hi, all! I'm having memory leak problem with my program, but can't find where's the leak. I have a program written in pure-Ruby. It implemented a Chinese word segment algorithm. I call `segment(text)' to get the result. But each time I call `segment', the memory usage of my program (Ruby) increased several handred K- bytes -- the number of bytes of increment is roughly equal during each call. I can see from outside (using `ps' or `top') that the memory is leaking. But I can't find where the leaking goes. I tried to use ObjectSpace.each_object to find out what leaks. I followed this article http://scottstuff.net/blog/articles/2006/08/17/memory-leak-profiling-with-rails and compare the objects after each call to `segment'. What surprise me is that there's no object leaked between each call. The number of objects after each call is roughly equal. I also tried bleak_house: http://blog.evanweaver.com/files/doc/fauna/bleak_house/files/README.html I don't precisely how to use it. I just dump a snapshot after each call to `segment' and use `bleak' to analyze the result. However, it also shows no leak. But if there's no leak, where goes the memory? Here's the result of using the `pmap' tool to inspect the running Ruby process: 933: /usr/bin/ruby1.8 /usr/bin/rake PROFILE=false test:many 08048000 4K r-x-- /usr/bin/ruby1.8 08049000 4K rw--- /usr/bin/ruby1.8 0804a000 33412K rw--- [ anon ] b74a8000 7016K rw--- [ anon ] b7b82000 16K r-x-- /usr/lib/ruby/1.8/i486-linux/strscan.so b7b86000 4K rw--- /usr/lib/ruby/1.8/i486-linux/strscan.so b7b87000 16K r-x-- /var/lib/gems/1.8/gems/ruby-prof-0.6.0/lib/ ruby_prof.so b7b8b000 4K rw--- /var/lib/gems/1.8/gems/ruby-prof-0.6.0/lib/ ruby_prof.so b7b8c000 1192K rw--- [ anon ] b7cb6000 1308K r-x-- /lib/i686/cmov/libc-2.7.so b7dfd000 4K r---- /lib/i686/cmov/libc-2.7.so b7dfe000 8K rw--- /lib/i686/cmov/libc-2.7.so b7e00000 12K rw--- [ anon ] b7e03000 140K r-x-- /lib/i686/cmov/libm-2.7.so b7e26000 8K rw--- /lib/i686/cmov/libm-2.7.so b7e28000 36K r-x-- /lib/i686/cmov/libcrypt-2.7.so b7e31000 8K rw--- /lib/i686/cmov/libcrypt-2.7.so b7e33000 156K rw--- [ anon ] b7e5a000 8K r-x-- /lib/i686/cmov/libdl-2.7.so b7e5c000 8K rw--- /lib/i686/cmov/libdl-2.7.so b7e5e000 4K rw--- [ anon ] b7e5f000 80K r-x-- /lib/i686/cmov/libpthread-2.7.so b7e73000 8K rw--- /lib/i686/cmov/libpthread-2.7.so b7e75000 8K rw--- [ anon ] b7e77000 756K r-x-- /usr/lib/libruby1.8.so.1.8.6 b7f34000 8K rw--- /usr/lib/libruby1.8.so.1.8.6 b7f36000 64K rw--- [ anon ] b7f48000 8K rw--- [ anon ] b7f4a000 8K r-x-- /usr/lib/ruby/1.8/i486-linux/etc.so b7f4c000 4K rw--- /usr/lib/ruby/1.8/i486-linux/etc.so b7f4d000 12K r-x-- /usr/lib/ruby/1.8/i486-linux/thread.so b7f50000 4K rw--- /usr/lib/ruby/1.8/i486-linux/thread.so b7f51000 8K rw--- [ anon ] b7f53000 104K r-x-- /lib/ld-2.7.so b7f6d000 8K rw--- /lib/ld-2.7.so bfdea000 116K rw--- [ stack ] ffffe000 4K r-x-- [ anon ] total 44568K The section "0804a000 33412K rw--- [ anon ]" increased after each call. I've no idea now. Do you have any suggestion for me?