[dpdk-dev] When are mbufs released back to the mempool?

Thanks very much, that clears it all up. -Original Message- From: Stephen Hemminger [mailto:step...@networkplumber.org] Sent: Thursday, December 19, 2013 11:36 AM To: Schumm, Ken Cc: Olivier MATZ; dev at dpdk.org Subject: Re: [dpdk-dev] When are mbufs released back to the mempool? On Thu

[dpdk-dev] When are mbufs released back to the mempool?

Hello Olivier, Do you know what the reason is for the tx rings filling up and holding on to mbufs? It seems they could be freed when the DMA xfer is acknowledged instead of waiting until the ring was full. Thanks! Ken Schumm -Original Message- From: Olivier MATZ [mailto:olivier.m...@6

[dpdk-dev] Loop back mode of the KNI

Hi all, We're working on the KNI and we see a strange behavior which seems like a bug in the the kernel module. When running with *lo_mode=lo_mode_fifo *everything works as expected, the packets looks similar on the ingress and egress. But when running with *lo_mode=lo_mode_fifo_skb *the packets

[dpdk-dev] Is rte_mempool library is multi-thread safe ???

Hello, 19/12/2013 11:57, ankit kumar : > It was working fine but i am not sure that memory allocation & > deallocation in rte_mempool library, is multi-thread safe or not.

[dpdk-dev] Bit spinlocks in DPDK

07/12/2013 18:54, Fran?ois-Fr?d?ric Ozog : > > De Thomas Monjalon > > 06/12/2013 14:12, Pashupati Kumar : > > > I am looking for spinlocks that use a single bit (bit 31) of a 32 bit > > > word for locking. The rest of the bits in the word are left > > > undisturbed. This enables more compact data

[dpdk-dev] Is rte_mempool library is multi-thread safe ???

Hi, I was testing rte_ring in DPDK as it provides multi-consumer & multi-produce queue(lock-free but not wait-free). It was working fine but i am not sure that memory allocation & deallocation in rte_mempool library, is multi-thread safe or not. Because its giving me error during allocat

[dpdk-dev] Is rte_mempool library is multi-thread safe ???

does that mean that on the same core, we can't do rte_eth_rx_burst in one thread (I assume this function allocates from mempool for storing mbufs everytime it receives a packet), while another thread calls rte_pktmbuf_alloc from the same mem_pool? On Thu, Dec 19, 2013 at 9:04 AM, Thomas Monjalon

[dpdk-dev] When are mbufs released back to the mempool?

On Thu, 19 Dec 2013 19:09:48 + "Schumm, Ken" wrote: > Hello Olivier, > > Do you know what the reason is for the tx rings filling up and holding on to > mbufs? Optimization to defer freeing. Note, there is no interrupts with DPDK so Transmit done can not be detected until the next transmit.