Huge Mutex Folder


My mutex folder apps/common/runtime/mutex/ is going huge.

console.php delete-mutexes --verbose=1

gives me
Deleted 2 out of 1804790 mutex files!

Any safe way to delete this file manually.
It's normal to have lots of files there if you're doing intensive sending.
The delete-mutexes command deletes mutexes older than 3 days, but if you feel it's not doing enough work, you can as well put the application offline, wait about 10 minutes or so, then simply empty that folder and put the app online. But again, those are just empty files, they don't weight that much on the disk.