Hello all, In general I want to run callgrind on one of apache module and from the valgrind documentation I found that it is not possible because valgrind requires to run with executable (please correct me if I understood something wrong from documentation). So now I trying to run callgrind with httpd but still have following problem: Apache doesn't accept any URL. If I run httpd without valgrind everything works fine for me, but with valgrind nothing work. Can you please let me know what I'm doing wrong? This is very urgent for me so if you can please help me ASAP! P.S. I googled during couple of hours but I couldn't find any useful documentation related to this problem. Best Regards, Davit