The rados gateway uses libfcgi, which provides the fastcgi api. We've bumped into an issue yesterday, where when the total number of the file descriptors that were used by rgw crossed 1024 the requests weren't handled correctly (apache started returning 500s). It appears that libfcgi uses select() instead of other safer options (e.g., poll() ) which has a limit related to the max file descriptor number it can process correctly (usually 1024). This also poses a security issue. Apparently, there's a patch for it (already available in ubuntu), so everyone uses libfcgi should make sure they're using a version that contains this fix: https://bugs.launchpad.net/ubuntu/+source/libfcgi/+bug/933417 Yehuda -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html