similar to: Question regarding Hypervisor_sched_op function

Hi all, I am having confusion regarding the way a newly created domain is allocated vcpu. Initially during dom0 creation alloc_vcpu is called to create vcpu structs for all the available cpu''s and assigned to dom0. But its not the case for domU creation. 1. So how will dom0 relinquish/share vcpu to/with a newly created domU. Does this happen as part of the shared_info page mapping??

Hi, This patch intends to accurate vcpu weighting for CPU intensive job. The reason of this problem is that vcpu round-robin queue blocks large weight vcpus by small weight vcpus. For example, we assume following case on 2pcpu environment. (with 4domains (each domain has 2vcpus)) dom1 vcpu0,1 w128 credit 4 dom2 vcpu0,1 w128 credit 4 dom3 vcpu0,1 w256 credit 8 dom4 vcpu0,1 w512 credit 15

I''m working on a new hypercall, do_confer, which allows the directed yielding of a vcpu to another vcpu. It is mainly used when a vcpu fails to acquire a spinlock, yielding to the lock holder instead of spinning. I ported the ppc64 spinlock implementation for the i386 linux portion. In implementing the hypercall, I''ve been trying to figure out how to get the scheduler

As discussed in a previous e-mail, this patch series implements yield for the credit scheduler. This allows a VM to actually yield (give up the cpu to another VM) when it wants to. This has been shown to be effective when used in the spinlock code to avoid wasting time spinning when another vcpu is not currently scheduled. _______________________________________________ Xen-devel mailing list

Existing credit scheduler is not power aware. To achieve better power saving ability with negligible performance impact, following areas may be tweaked and listed here for comments first. Goal is not to silly save power with sacrifice of performance, e.g. we don''t want to prevent migration when there''re free cpus with some pending runqueues. But when free computing power is

Hi all, first thanks reading my letter, Im statistics student . im doing my final assignment bout application of correspondence analysis in geographical information system. i use delphi 7 for developing and R for statistical computation. I use RDCom to cennect delphi and R. there was some example in visual basic to get the vharacter output of R in in vb. but i cant get the character

While investigating erratic performance on one our our servers, I'm getting some very odd performance stats coming from vmstat. What initially appeared to be happening is the machine goes into a hard loop in some mod_perl webserver code. Now there still may be an issue with the code, but my code examinations show no possible way this could be happening, but what I'm writing to you

Address some credit2 issues. This patch series, along with the recent changes to the cpupools interface, should address some of the strange credit2 instability. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

I'm running a RHEL6 as a development desktop with Fedora 14 (multimedia stuff) and Win XP (corporate email and calendars) running on it as KVM VMs. Everything runs great except for audio pass through. Audio works on the RHEL host. Both VMs see sound cards provided by the VM, but no sound is forthcoming. I have tried adding a PCI audio device from the physical host to the Fedora VM, but then

sched_sedf.c used o have its own mechanism for producing tracing-alike kind of information (domain block, wakeup, etc.). Nowadays, with an even not so high number of pCPUs/vCPUs, just trying to enable this makes the serial console completely unusable, produces tons of very hard to parse and interpreet logging and can easily livelock Dom0. Moreover, pretty much the same result this is struggling to

The previous order of relinquish resource is: relinquish_domain_resources() -> vcpu_destroy() -> nvmx_vcpu_destroy(). However some L1 resources like nv_vvmcx and io_bitmaps are free in nvmx_vcpu_destroy(), therefore the relinquish_domain_resources() will not reduce the refcnt of the domain to 0, therefore the latter vcpu release functions will not be called. To fix this issue, we need to

This patch to the balloon driver eliminates the need for a user-space program to slosh memory between domains and xen. This uses a proc file at /proc/xen/memory_target. When read it reports memory the domain owns in bytes. Writing a new value to the memory_target proc file will cause the domain to exchange memory with xen to reach the target. A xenolinux domain cannot grow bigger than it was

Hi Everyone, I figured out this weekend that Ruby''s Thread implementation causes the Ruby/Event binding I wrote to completely stall and go dead. After reviewing the Ruby source and watching several strace runs, it''s clear that the Ruby Thread implementation uses select in a way that--while not being bad--just isn''t compatible with libevent. The second a thread is

I have a xVm b75 server and use zfs for storage (zfs root mirror and a raid-z2 datapool.) I see everywhere that it is recommended to have a lot of memory on a zfs file server... but I also need to relinquish a lot of my memory to be used by the domUs. What would a good value for dom0_mem on a box with 4 gig of ram?

I have a xVm b75 server and use zfs for storage (zfs root mirror and a raid-z2 datapool.) I see everywhere that it is recommended to have a lot of memory on a zfs file server... but I also need to relinquish a lot of my memory to be used by the domUs. What would a good value for dom0_mem on a box with 4 gig of ram?

In order to avoid high-frequency cpu migration, vcpus may in fact be scheduled slightly out-of-order. Account for this situation properly. Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com> credit2: Fix erronous ASSERT In order to avoid high-frequency cpu migration, vcpus may in fact be scheduled slightly out-of-order. Account for this situation properly. v2: - Update comment

[Sol 10 6/6 x64] I am very newbie in ZFS. I have created 30GB storage pool and become a root_pool. If I run "du -hs" from root directory , it reports only used 5.4G. But when I run "df -h", it reports used 26G. Why it is happens? How to reclaim back to 5.4G usage? Thanks, Regards -- This messages posted from opensolaris.org

I am using microsoft XP Pro-SP3 and I am facing this problem. C:\Ruby192>gem install rails --include-dependencies INFO: `gem install -y` is now default and will be removed INFO: use --ignore-dependencies to install only the gems you list ERROR: While executing gem ... (Errno::EACCES) Permission denied - C:/Documents and Settings/admin/.gem/specs Please help to complete with any idea.

Hi gang! At work I have a DL320 G2 machine I use as my desktop (I know, weird!...). Back when I ran RHEL WS 2.1 on it, it always ran a SMP kernel because it has a HypterThread capable processor. When I installed (fresh from scratch) Centos 4.4 on it a while back, though, Centos installed only the UP kernel. I've looked in the BIOS for settings to enable/disable HT support and I don't

On 05/04/16 06:10, Juergen Gross wrote: > Some hardware models (e.g. Dell Studio 1555 laptops) require calls to > the firmware to be issued on cpu 0 only. As Dom0 might have to use > these calls, add xen_pin_vcpu() to achieve this functionality. > > In case either the domain doesn't have the privilege to make the > related hypercall or the hypervisor isn't supporting it,