unsigned long getClientOutputBufferMemoryUsage(client *c) {
    unsigned long list_item_size = sizeof(listNode) + sizeof(clientReplyBlock);
    return c->reply_bytes + (list_item_size*listLength(c->reply));
}
unsigned long getClientOutputBufferMemoryUsage(client *c) {
    unsigned long list_item_size = sizeof(listNode) + sizeof(clientReplyBlock);
    return c->reply_bytes + (list_item_size*listLength(c->reply));
}