Hello, All I have a terrible problem with object server. Here is the case. 1. User upload an object to proxy-server 2. Proxy server try to connect with object-server 3. If one of object-server is slow to respond, proxy-server is waiting for response. 3.1 While waiting for response, proxy-server can't do anything 4. So, The response of client request will be delayed.
In my opinion, this code seems to be a problem ( https://github.com/openstack/swift/blob/stable/rocky/swift/proxy/controllers/obj.py#L1734 ) ``` with ResponseTimeout(node_timeout): resp = conn.getexpect() ``` If node_timeout's value is 3 and object-server respond after 2 seconds, proxy-server wait 2 seconds. Because proxy-server wait for the above response, the execution of the following code is delayed. ( https://github.com/openstack/swift/blob/stable/rocky/swift/proxy/controllers/obj.py#L627 ) ``` for node in nodes: try: putter = self._make_putter(node, part, req, headers) self.app.set_node_timing(node, putter.connect_duration) return putter ``` This problem occurs when i do a ring rebalance. When object-replicator delete a partition directory that are no longer mine, the disk becomes very busy (Because of xfsaild daemon) Because the disk are busy, object-server can't create diskfile during PUT operation. Is there anyone who is having problems like me? How can I solve this problem? I need everyone's help. Thanks. Best Regards SeongSoo Cho ------ SeongSoo Cho (South Korea)
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