Issue #19355 has been reported by luke-gru (Luke Gruber). ---------------------------------------- Feature #19355: Add finer coarsed locking for searching callable method entries https://bugs.ruby-lang.org/issues/19355 * Author: luke-gru (Luke Gruber) * Status: Open * Priority: Normal ---------------------------------------- During multi-ractor mode, unfortunately when calling methods often there's a call to the internal cruby function `callable_method_entry`, which returns a cached CME or a new one. In the case that it's cached, there's a VM lock around its access that could be reduced to a lock pertaining to the class of the caller of the method. This reduces locking in multi-ractor mode and allows, for example, object allocation to happen at the same time as method calls. -- https://bugs.ruby-lang.org/