Hello! We've encountered a strange behaviour with our quite loaded (avg 1500 http requests per sec) SVN server. The server (RHEL5) is serving SVN repositories via https by Apache.
apache 2.2.9 subversion 1.6.5 neon-0.28.4-1 neon-devel-0.28.4-1 The problem is that occasionally couple of httpd processes start eating huge amounts of memory and cause server to halt after all memory and swap are being used. Workarounds exist but stracing the bad processes reveal quite clear bug somewhere in the used components. Strace output: mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aac445ab000 brk(0x4004c000) = 0x40029000 This repeats forever (returned mem addr changes every time of course) until server halts. It only takes minutes to eat up 64GB of mem and 8GB of swap. We can see this only in our production environment which makes debugging a bit hard. One notable thing might be that the storage is on FC and IO scheduler is 'deadline' which might help revealing/reproducing the issue. Br, Antti Siukola
