Hi,
I'm playing dpdkvhostuser ports with latest DPDK and ovs master tree with iperf
benchmarking.
When kvm guest1(backed up dpdkvhostuser port)siting on HOST1 is receiving
packets from either other physical HOST2,
or similar kvm guest2 with dpdkvhostuser port siting on HOST2. The connectivity
will break, iperf show no bandwidth and stall finally.
Other test scenario like, two kvm guest sitting on one host, or a single kvm
guest send packets to a physical host works like a charm.
Swiitch debug option on, dpdk lib spit as below:
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:62
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:58
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
VHOST_DATA: F0 Failed to allocate memory for mbuf. mbuf_pool:0x7fc7411ab5c0
After some tweaks of logging code, and looks like bad things happens within
below code snippet:
In lib/librte_vhost/vhost_rxtx.c function: rte_vhost_dequeue_burst
612 vb_offset = 0;
613 vb_avail = desc->len;
614 /* Allocate an mbuf and populate the structure. */
615 m = rte_pktmbuf_alloc(mbuf_pool);
616 if (unlikely(m == NULL)) {
617 RTE_LOG(ERR, VHOST_DATA,
618 "F0 Failed to allocate memory for mbuf.
mbuf_pool:%p\n", mbuf_pool);
619 break;
620 }
621 seg_offset = 0;
622 seg_avail = m->buf_len - RTE_PKTMBUF_HEADROOM;
623 cpy_len = RTE_MIN(vb_avail, seg_avail);
_______________________________________________
dev mailing list
dev@openvswitch.org
http://openvswitch.org/mailman/listinfo/dev
