EnumSet.of(RdmaAccess.LOCAL_WRITE, RdmaAccess.REMOTE_WRITE));
        totalAllocated.incrementAndGet();
        return region;
    }
    
    public void releaseReceiveRegion(RdmaMemoryRegion region) {
        if (availableReceiveRegions.size() < initialReceiveBuffers * 2) {
            availableReceiveRegions.offer(region);
        } else {
            region.close();

            assertTrue(initialActive >= 2, "Should have at least 2 active regions");

            // Test buffer release and reuse
            bufferManager.releaseSendRegion(sendRegion);
            bufferManager.releaseReceiveRegion(recvRegion);

            // Allocate again to test pooling
            RdmaMemoryRegion newSendRegion = bufferManager.getSendRegion(4096);