similar to: about Xen accelerated network plugin modules

Hi all, I used netperf to measure throughput between dom0 & domU. The throughput between dom0 -> domU was 256.00 Mb/sec domU -> dom0 was 401.15 Mb/sec. The throughput between dom0 & domU seems to be very asymmetry. To my surprise the throughput between domU -> dom0 is more. The value which I specified are consistent values. Is

hi I've some problems with netback 1.what's mmap_pages for, which come from balloon operation ？ mmap_pages = alloc_empty_pages_and_pagevec(MAX_PENDING_REQS) 2.what's the meaning of "refcnt" defined in netif_t (netif->refcnt) 3.irq enable and disable such as disable_irq(netif->irq); why netback use such enable & disable operations while netfront dont use for its

hi all, I noticed "CONFIG_XEN" appears many times in Xen source code. I''m confused about the meaning of "CONFIG_XEN". For example, in "gnttab.c", the definations of gnttab_map() and gnttab_resume() vary with "ifdef CONFIG_XEN" or not. And I also noticed ifndef CONFIG_XEN , the file <platform-pci.h> is included. So my questions

From: Hongyong Zang <zanghongyong at huawei.com> Vhost-net uses its own vhost_memory, which results from user space (qemu) info, to translate GPA to HVA. Since kernel's kvm structure already maintains the address relationship in its member *kvm_memslots*, these patches use kernel's kvm_memslots directly without the need of initialization and maintenance of vhost_memory. Hongyong

From: Hongyong Zang <zanghongyong at huawei.com> Vhost-net uses its own vhost_memory, which results from user space (qemu) info, to translate GPA to HVA. Since kernel's kvm structure already maintains the address relationship in its member *kvm_memslots*, these patches use kernel's kvm_memslots directly without the need of initialization and maintenance of vhost_memory. Hongyong

Hi, Sorry for the late reply. On (Thu) 12 Jan 2012 [09:20:07], zanghongyong at huawei.com wrote: > From: Hongyong Zang <zanghongyong at huawei.com> > > Add setup_port_vq(). Create the io ports' vqs when add_port. Can you describe the changes in more detail, please? > Signed-off-by: Hongyong Zang <zanghongyong at huawei.com> > --- >

Hi, Sorry for the late reply. On (Thu) 12 Jan 2012 [09:20:07], zanghongyong at huawei.com wrote: > From: Hongyong Zang <zanghongyong at huawei.com> > > Add setup_port_vq(). Create the io ports' vqs when add_port. Can you describe the changes in more detail, please? > Signed-off-by: Hongyong Zang <zanghongyong at huawei.com> > --- >

hi, my friends: recently, i am reading the source codes about hypercall. First, i study a simple hypercall, for example, the "do_xen_version". In "xen-3.1.0-src\xen\common\kernel.c", the definition of "do_xen_version" is: DO(xen_version) (int cmd, XEN_GUEST_HANDLE(void) arg) { .... } according to the " #define DO(fn) long do_##fn ", the expanded form is

In hvm enviroment, acpi failed. why? centos5.1 =================================================== [root@hvm001 ~]# xm dmesg __ __ _____ _ ____ ___ ____ _ ____ \ \/ /___ _ __ |___ / / | |___ \ / _ \___ \ ___| | ___| \ // _ \ \047_ \ |_ \ | | __) |_| (_) |__) | / _ \ |___ \ / \ __/ | | | ___) || |_ / __/|__\__, / __/ | __/ |___) | /_/\_\___|_| |_| |____(_)_(_)_____| /_/_____(_)___|_|____/

Hi to all. I''m installed XEN3.1 correctly but I''m some problem to start it. XEN start but I received this message: VFS: Cannot open root device "hda5" or unknown-block(0,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) This is strange because my grub is configured like this:

Hello. Up to version 3.0.4, I did the following to get two xen kernels (dom0 and domU) with my own config: wget http://www.cl.cam.ac.uk/Research/SRG/netos/xen/downloads/... make xen make tools make docs make linux-2.6-xen0-config CONFIGMODE=menuconfig make linux-2.6-xen0-build make linux-2.6-xen0-install make linux-2.6-xen0-dist make linux-2.6-xenU-config CONFIGMODE=menuconfig make

Hi all, I want to open a device(/dev/sda1, /dev/hda2 etc) in which my file exists. I've used 'stat' system call to get the device id. But now I want the device name from this id(st_dev). How to get that one? Or Do you have any other method to know the device name where my file resides? Thanks Bollywood, fun, friendship, sports and more. You name it, we have it on

Hi, I wanted an opinion on the most xen-compatible linux distro. Im embarking on a 4 month project with xen which involves the following objectives: 1.>Creating a tool with GUI that allows a)starting,stopping restarting domUs b)maintaining a status log of domUs c)migration of dom Us d)

hi all, i want to install xen3.1 on my system, suse linux enterprise server 10 SP1 (kernel 2.6.16.46-0.12). i download the tarball binary file. it contains only "vmlinuz-2.6.18-xen" and "xen-3.1.gz", no initrd. but see the following code in my grub menu.lst, it seems like i need the initrd file. i tried the installation with this binary Tarball, it didn''t work.

hi guys I wonder if any of you might be using SFN6122F-R7 SFP+ (SFC9000, same firmware everywhere, Centos 7.5 too. I'm trying poor man's setup to get the servers onto 10GbE network. Setup is such that three Dell R815 are connected to each other, each has one Solarflare(SFP ports) and each Solarflare is set as net-team(both ports on a card are net-team device) with runner in broadcast

On Thu, Feb 07, 2013 at 01:14:20PM -0500, David Miller wrote: > From: Ben Hutchings <bhutchings at solarflare.com> > Date: Thu, 7 Feb 2013 16:20:46 +0000 > > > If the consensus is still that we must preserve packets exactly (aside > > from the usual modifications by IP routers) then LRO should be disabled > > on all devices for which forwarding is enabled. >

On Thu, Feb 07, 2013 at 01:14:20PM -0500, David Miller wrote: > From: Ben Hutchings <bhutchings at solarflare.com> > Date: Thu, 7 Feb 2013 16:20:46 +0000 > > > If the consensus is still that we must preserve packets exactly (aside > > from the usual modifications by IP routers) then LRO should be disabled > > on all devices for which forwarding is enabled. >

On Thu, 2014-01-16 at 01:38 -0800, Michael Dalton wrote: [...] > --- a/include/linux/netdevice.h > +++ b/include/linux/netdevice.h [...] > @@ -2401,6 +2416,23 @@ static inline int netif_copy_real_num_queues(struct net_device *to_dev, > #endif > } > > +#ifdef CONFIG_SYSFS > +static inline unsigned int get_netdev_rx_queue_index( > + struct netdev_rx_queue *queue) >

On Thu, 2014-01-16 at 01:38 -0800, Michael Dalton wrote: [...] > --- a/include/linux/netdevice.h > +++ b/include/linux/netdevice.h [...] > @@ -2401,6 +2416,23 @@ static inline int netif_copy_real_num_queues(struct net_device *to_dev, > #endif > } > > +#ifdef CONFIG_SYSFS > +static inline unsigned int get_netdev_rx_queue_index( > + struct netdev_rx_queue *queue) >

Hi, there. I am trying to read a file into R, but I got following message Error in file(file, "r") : unable to open connection In addition: Warning message: cannot open file `SwirlSample.txt' . In fact, my file has been already in the current working directory. My R is running on window operation system instead of UNIX. Thanks. Shizhu Zang Department of Biochemsitry Peking