search for: dequing

I've been searching for information on using deques in R for the past couple of days. What little I've found has pointed me towards either the Rcpp package or the cpp project on R-forge (https://r-forge.r-project.org/projects/cpp/), but I've had trouble finding working examples. Are these the best ways to go about trying to implement a deque in R and does anyone have examples of how to

On May 11, 2010, at 7:26 PM, David Greene wrote: > On Tuesday 11 May 2010 15:43:21 Chris Lattner wrote: >> Hi All, >> >> LLVM now includes a C++ standard library, written by Howard Hinnant. You >> can read about it here: >> http://blog.llvm.org/2010/05/new-libc-c-standard-library.html >> >> Or get the code here: >> svn co

Hi, I'm part of an engineering team doing research on persistent memory support and we have stumbled upon an interesting problem. The issue is, we would like to be able to use the standard library containers in a persistent memory context (think NVDIMM-N). What I mean is that you allocate a container from said memory, use it like you normally would. After the application terminates, expectedly

On 2017?03?22? 22:16, Michael S. Tsirkin wrote: > On Tue, Mar 21, 2017 at 12:04:46PM +0800, Jason Wang wrote: >> We used to dequeue one skb during recvmsg() from skb_array, this could >> be inefficient because of the bad cache utilization and spinlock >> touching for each packet. This patch tries to batch them by calling >> batch dequeuing helpers explicitly on the

On 2017?03?23? 13:34, Jason Wang wrote: > > >> >>> +{ >>> + if (rvq->rh != rvq->rt) >>> + goto out; >>> + >>> + rvq->rh = rvq->rt = 0; >>> + rvq->rt = skb_array_consume_batched_bh(rvq->rx_array, rvq->rxq, >>> + VHOST_RX_BATCH); >> A comment explaining why is

Hi Jason, > > On 2017?03?23? 13:34, Jason Wang wrote: > > > > > >> > >>> +{ > >>> + if (rvq->rh != rvq->rt) > >>> + goto out; > >>> + > >>> + rvq->rh = rvq->rt = 0; > >>> + rvq->rt = skb_array_consume_batched_bh(rvq->rx_array, rvq->rxq, > >>> +

On 2017?03?29? 18:46, Pankaj Gupta wrote: > Hi Jason, > >> On 2017?03?23? 13:34, Jason Wang wrote: >>> >>>>> +{ >>>>> + if (rvq->rh != rvq->rt) >>>>> + goto out; >>>>> + >>>>> + rvq->rh = rvq->rt = 0; >>>>> + rvq->rt =

On 2017?03?23? 13:34, Jason Wang wrote: > > >> >>> +{ >>> + if (rvq->rh != rvq->rt) >>> + goto out; >>> + >>> + rvq->rh = rvq->rt = 0; >>> + rvq->rt = skb_array_consume_batched_bh(rvq->rx_array, rvq->rxq, >>> + VHOST_RX_BATCH); >> A comment explaining why is

On 2017?03?29? 18:46, Pankaj Gupta wrote: > Hi Jason, > >> On 2017?03?23? 13:34, Jason Wang wrote: >>> >>>>> +{ >>>>> + if (rvq->rh != rvq->rt) >>>>> + goto out; >>>>> + >>>>> + rvq->rh = rvq->rt = 0; >>>>> + rvq->rt =

On Tuesday 11 May 2010 15:43:21 Chris Lattner wrote: > Hi All, > > LLVM now includes a C++ standard library, written by Howard Hinnant. You > can read about it here: > http://blog.llvm.org/2010/05/new-libc-c-standard-library.html > > Or get the code here: > svn co http://llvm.org/svn/llvm-project/libcxx/trunk libcxx > > If you have questions or comments, please

We used to dequeue one skb during recvmsg() from skb_array, this could be inefficient because of the bad cache utilization and spinlock touching for each packet. This patch tries to batch them by calling batch dequeuing helpers explicitly on the exported skb array and pass the skb back through msg_control for underlayer socket to finish the userspace copying. Tests were done by XDP1: - small

Hi, I have been modifying the Wonder shaper to include another queue. My understanding was packets would be de queued to hardware in the following order: cbq1 -> sfq10 > sfq20 > sfq30. Also we only move onto the next queue when the preceding one is empty. However is seems to be prio xx number that reflects the order packets are de queued not to what flowid they belong to. If I

On Tue, Mar 21, 2017 at 12:04:46PM +0800, Jason Wang wrote: > We used to dequeue one skb during recvmsg() from skb_array, this could > be inefficient because of the bad cache utilization and spinlock > touching for each packet. This patch tries to batch them by calling > batch dequeuing helpers explicitly on the exported skb array and pass > the skb back through msg_control for

On Tue, Mar 21, 2017 at 12:04:46PM +0800, Jason Wang wrote: > We used to dequeue one skb during recvmsg() from skb_array, this could > be inefficient because of the bad cache utilization and spinlock > touching for each packet. This patch tries to batch them by calling > batch dequeuing helpers explicitly on the exported skb array and pass > the skb back through msg_control for

From: Wei Xu <wexu at redhat.com> Matthew found a roughly 40% tcp throughput regression with commit c67df11f(vhost_net: try batch dequing from skb array) as discussed in the following thread: https://www.mail-archive.com/netdev at vger.kernel.org/msg187936.html Eventually we figured out that it was a skb leak in handle_rx() when sending packets to the VM. This usually happens when a guest can not drain out vq as fast as vhost fills...

From: Wei Xu <wexu at redhat.com> Matthew found a roughly 40% tcp throughput regression with commit c67df11f(vhost_net: try batch dequing from skb array) as discussed in the following thread: https://www.mail-archive.com/netdev at vger.kernel.org/msg187936.html Eventually we figured out that it was a skb leak in handle_rx() when sending packets to the VM. This usually happens when a guest can not drain out vq as fast as vhost fills...

Hi All, LLVM now includes a C++ standard library, written by Howard Hinnant. You can read about it here: http://blog.llvm.org/2010/05/new-libc-c-standard-library.html Or get the code here: svn co http://llvm.org/svn/llvm-project/libcxx/trunk libcxx If you have questions or comments, please direct them to one of the clang mailing lists. Thanks! -Chris

Michael, Yes, while stepping through this VS2010 `std::swap` code, `_Move` did nothing, e.g. //////////////////////////////////////////////////// void swap(_Ty& _Left, _Ty& _Right) { // exchange values stored at _Left and _Right _Ty _Tmp = _Move(_Left); _Left = _Move(_Right); _Right = _Move(_Tmp); } //////////////////////////////////////////////////// was equivalent to:

I have been working on a game for a while now and noticed that using your library to stream music created a graphical problem while the screen would scroll. (certain tiles would flicker to be more specific). I found that if I don't play music this problem doesn't occur. Another developer suggested that if I can lower the priority (thread priority) of the music this could fix the problem.

On Thu, Jul 07, 2016 at 06:08:43PM +0100, Richard W.M. Jones wrote: > On Thu, Jul 07, 2016 at 07:00:46PM +0200, Pino Toscano wrote: > > On Thursday 07 July 2016 17:30:03 Richard W.M. Jones wrote: > > > This adds imperative list manipulation functions inspired by Perl. > > > The functions are passed list refs which get updated in place. > > > > > > This