similar to: [PATCH v2 1/2] credit2: Fix erronous ASSERT

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

Modified function runq_candidate in the credit 2 scheduler to have it consider hard and soft affinity when choosing the next vCPU from the run queue to run on the given pCPU. Function now chooses the vCPU with the most credit that has hard affinity and maybe soft affinity for the given pCPU. If it does not have soft affinity and there is another vCPU that prefers to run on the given pCPU, then as

Add a xen command-line parameter, sched_credit_tslice_ms, to set the timeslice of the credit1 scheduler. Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com> diff -r 4a4882df5649 -r 782284c5b1bc xen/common/sched_credit.c --- a/xen/common/sched_credit.c Wed Aug 31 15:23:49 2011 +0100 +++ b/xen/common/sched_credit.c Thu Sep 01 16:29:50 2011 +0100 @@ -41,15 +41,9 @@ */ #define

Hello, This small series deals with some weirdness in the mechanism with which the credit scheduler choses what PCPU to tickle upon a VCPU wake-up. Details are available in the changelog of the first patch. The new approach has been extensively benchmarked and proved itself either beneficial or harmless. That means it does not introduce any significant amount of overhead and/or performances

v2: - Fix seeding. - Add a test that nbdkit-random-plugin is producing something which looks at least somewhat random. Rich.

Currently we use non-cryptographically secure random numbers in two places, the error filter (to inject errors at random) and the random plugin. For this we have used either random_r or a home-brew-ish Linear Congruential Generator. Use of random_r is problematic on BSDs because it doesn't exist there. Use of the LCG is simply a bad choice. Replace both uses with a better quality and

On 12/28/18 2:55 PM, Richard W.M. Jones wrote: > Currently we use non-cryptographically secure random numbers in two > places, the error filter (to inject errors at random) and the random > plugin. For this we have used either random_r or a home-brew-ish > Linear Congruential Generator. Use of random_r is problematic on BSDs > because it doesn't exist there. Use of the LCG is

Hi Arjen, in server/upsd.c r731, you moved the call conf_load() from after check_perms() (~ l.1020) to before setupsignals() (~ l.989). The problem is that conf_load() needs to open the ups driver socket, and it assumes that STATEPATH is the current working directory. The directory is only set in l.1016. Therefore, the first attempt to open a socket will always fail. From the user's point of

On Wed, Nov 23, 2011 at 2:55 PM, Dario Faggioli <raistlin@linux.it> wrote: > Hi everyone, > > This series changes how locks are dealt with while adjusting domains'' > scheduling parameters. > > I''ve done and am still doing tests for credit and credit2, and it''s > surviving to all I threw at it up to now. Unfortunately, I can''t test >

Should we use attribute((nonnull)) at all? There's a very interesting history of this in libvirt -- try looking at commit eefb881 plus the commits referencing eefb881 -- but it does seem to work for me using recent GCC and Clang. I only did a few functions because annotating them gets old quickly... Rich.

Hi, everyone, I''m curious about what are the differences between credit2 and credit1 of xen''s scheduler? And is credit2 will release in xen-4.1? Are there some one can tell me some details about them? or just tell me where can I find some reference about them? Thanks in advance :) -- - Luit @ Parallel Processing Institute, Fudan University

Annotate some function parameters with attribute((nonnull)). Only do this for internal headers where we are sure that we will be using sufficiently recent GCC or Clang. For the public header files (ie. include/nbdkit-*.h) it may be that people building out of tree plugins are using old GCC which had problems, or even other compilers that don't support this extension at all. Libvirt has an

v1 was here: https://www.redhat.com/archives/libguestfs/2019-January/msg00008.html In v2 I have provided two patches: The first patch extends attribute((nonnull)) to most internal functions, but not to the external API. The second patch uses a macro so that attribute((format)) is only used in the public API on GCC or Clang. At least in theory these headers could be used by a C compiler which

Hello everyone, this is the very first version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See

Hello, I have discovered a slight problem with MS-Project4 on a WinDD server, where users are not able to update the *.MPP file. WinDD is Citrix Metaframe on Windows NT 3.51. We have all data files stored on a UNIX box, using samba-2.05a, so all *.MPP files are stored there, with the proper UNIX user's userid and permissions. The problem is that userB can not update and save changes in a

Good day, I'm having a few problems with Samba 3.0.2a, specifically involving the username character substitute, %u. For some reason, Samba resolves the %u character wrongly when used in the "path" parameter, where it resolves it as the guest account. However, the server in question has "map to guest" set to never and both "guest ok" and "guest only"

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

(Second try to send this. I wonder if the first one gotten eaten by a spam filter; I'll link to patches instead of attaching them.) Here are the tincctl patches I've been working on. They apply to http://www.tinc-vpn.org/svn/tinc/branches/1.1@1545. I intend to commit them once the crypto stuff's fixed. Since they're basically done, I'm emailing them now for review and in case

in _csched_cpu_pick(), as not doing so may result in the domain''s node-affinity mask (as retrieved by csched_balance_cpumask() ) and online mask (as retrieved by cpupool_scheduler_cpumask() ) having an empty intersection. Therefore, when attempting a node-affinity load balancing step and running this: ... /* Pick an online CPU from the proper affinity mask */

Hello everyone, this is the fourth version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See