Abstract: Various embodiments of systems and methods for file system transaction log flush optimization are described herein. An optimizer is working as an intelligent processing unit, autonomously determining the best possible time to flush all collected transaction data modifications to the file system when operating under high load, or flushing each modification separately under low load. When operating under high load, batches of data modifications are collected and written together to the file system in a single write operation, thus decreasing the number of write operations and achieving better utilization of the system resources.