emmericp

10 ms·

1. 61.▲
   by emmericp 8y ago

   VPP uses DPDK
2. 62.▲
   by emmericp 8y ago

   This all happens after the packet is transferred over PCIe to the CPU/memory (even the interrupt happens after DMA transfer). Otherwise the XDP code wouldn't have access to the packet to filter it; the example doesn't just d
3. 63.▲
   by emmericp 8y ago

   RBD (Ceph block devices) supports exclusive locking. The RBD kernel client has support for that since kernel 4.9. Older kernels can use rbd-nbd to use the user space implementation of RBD. Async replication is also available with rbd-mirror
4. 64.▲
   by emmericp 9y ago

   Shouldn't you start your list at index 0? ;)
5. 65.▲
   by emmericp 9y ago

   The core of the problem is an optimization problem between saving power and optimizing for latency. Lets say you are receiving around 100k packets. You can fire 100k interrupts per second. Sure, no problem. But you'll probably be runni
6. 66.▲
   by emmericp 9y ago

   The problem with these NICs is that they are PCI or even ISA. Also, they are quite rare compared to, e.g., an igb/e1000e NIC. A driver for an igb/e1000e NIC would be quite similar to the ixgbe driver. However, since the main goal
7. 67.▲
   by emmericp 9y ago

   I'm not aware of any hypervisors that can emulate a 82599 (ixgbe) NIC. I've a student who will start to work on a virtio driver soon to get a VM setup running.