If you use RPC to create the transport via "-u 8192" , which should be removed, then it will use the default one Best Regards Ziye Yang -----Original Message----- From: SPDK [mailto:spdk-bounces@lists.01.org] On Behalf Of Ramaraj Pandian Sent: Thursday, January 24, 2019 3:01 AM To: Storage Performance Development Kit <spdk(a)lists.01.org&gt; Subject: [SPDK] NvmeOverTcp running with block size Hi, I am trying to ro perf with block size 64k and get this error, is there any configuration setup I am missing? Its works upto 8k block though. Associating SPDK bdev Controller (SPDK00000000000001 ) with lcore 0 Initialization complete. Launching workers. Starting thread on core 0 nvme_tcp.c: 909:nvme_tcp_pdu_ch_handle: *ERROR*: Expected PDU header length 24, got 7 nvme_tcp.c:1588:nvme_tcp_qpair_process_completions: *ERROR*: Error polling CQ! (11): Resource temporarily unavailable Segmentation fault Thanks Ram _______________________________________________ SPDK mailing list SPDK(a)lists.01.org https://lists.01.org/mailman/listinfo/spdk