similar to: Do we need ACPI/APIC/NUMA/Schedule in dom0 ?

Hi, with regards Intels L1TF vulnerabilities, it seems they are somewhat non-committal on whether turning off HyperThreading is required, suggesting people > Consult with your hypervisor vendor for more guidance. https://www.intel.com/content/www/us/en/architecture-and-technology/l1tf.html#faq-answers-10-0 What is the consensus in the Libvirt community about the risks (or not) of leaving

Hi, I can''t get rid of an annoying domU machines hanging issue with Hyperthreading enabled in my BIOS. Hardware config: IBM x325 series 2 * CPUs Intel Xeon 3.06 Ghz Xen version: 3.0.0 Kernel version: 2.6.12.6 Linux distrib: Debian Sarge 3.1 r1 I run 1 domU machine on my dom0, here is my Xen config: . xen0: /etc/xen/xend-config.sxp : (dom0-num-cpus 0) .

Hi, I have two boxes with 2 * Xeon 3.0 Ghz I''ve enabled Hyperthreading in the BIOS. - One box is with Xen 3.0.1 I''ve enabled SMP + SMT in my kernel Xen0 config, and SMP + SMT works perfectly. I can see 4 cpus in my VCPU list for Domain0, and I see also 4 CPUs in the /proc/cpuinfo file. - One box is with Xen 3.0.2 I''ve enabled SMP in my kernel Xen0 config, and SMT has

I am running irqbalance with default configuration on an Atom 330 machine. This CPU has 2 physical cores + 2 SMT (aka Hyperthreading) cores. As shown below the interrupt for the eth0 device is always on CPUs 0 and 1, with CPUs 2 and 3 left idle. But why? Maybe irqbalance prefers physical cores? My understanding, though, is that the even-numbered CPUs are the physical cores, with the

Package: xen-hypervisor-4.0-amd64 Version: 4.0.1-2 I have a similar problem. Hardware configuration: - IBM x3850 server - 6GB DDR2 RAM - IBM ServeRAID 8i configured to RAID0 - 2x DualCore Xeon processors with HyperThreading. The following options available for CPU: - HyperThreading - Processor Adjacent Selector Prefetch - Processor Hardware Prefetcher - Processor Execute

Greetings- I'm running some USB DAHDI hardware on a system with a tickless kernel. The audio quality is quite poor. Could the tickless kernel be to blame? If so, when recompiling a kernel that is *not* tickless, is there a recommended KERNEL_HZ value? IIRC, older kernels used to be 1000, but newer ones are 250. Thoughts? --Tim

Hello, I am trying to build a custom kernel 2.6.24 from ubuntu with xen dom0 support. Does Xen support a tickless system (CONFIG_TICK_ONESHOT=y) and the realtime features of this kernel (CONFIG_PREEMPT=Y instead of CONFIG_PREEMP_VOLUNTARY)? Everytime, I set these options while configuring the kernel, the two settings are not regarded during kernel compilation. I also tried to build the

Dear Arun, thank you for checking the workaround scripts. I've modified detectCores() to use GetLogicalProcessorInformationEx. It is in revision 75198 of R-devel, could you please test it on your machines? For a binary, you can wait until the R-devel snapshot build gets to at least this svn revision. Thanks for the link to the processor groups documentation. I don't have a machine

Other than for the legacy APIC, the x2APIC MADT entries have valid ranges possibly extending beyond what our internal arrays can handle, and hence we need to guard ourselves against corrupting memory here. Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/xen/arch/x86/acpi/boot.c +++ b/xen/arch/x86/acpi/boot.c @@ -97,7 +97,20 @@ acpi_parse_x2apic(struct acpi_subtable_h

Hi, my video sharing website (politube.org) that I developed with rails, runs on lighttpd/fcgi (I know it is obsolete by now) and is severely under load and regularly blocks because the lighttpd process chews up 50% of RAM (1GB). So now I want to move the system to a new server with 8GB, 64bit , Quad core processor (intel i7 920) but I am not sure if hyperthreading will really do anything better.

I could use some input to point out the error in my configuration, which eludes me. Previously I operated a 225-node cluster with samba 4.3 and sssd on the Linux boxes. Everything worked OK. Now I am using samba 4.11.6 on CentOS 7.7, patched up to date. The DC, on a KVM VM, is the only node configured so far. I am using winbind in place of sssd (my first experience with winbind). BIND9_DLZ

On 15/02/2020 19:15, Steve Thompson via samba wrote: > I could use some input to point out the error in my configuration, > which eludes me. > > Previously I operated a 225-node cluster with samba 4.3 and sssd on > the Linux boxes. Everything worked OK. > > Now I am using samba 4.11.6 on CentOS 7.7, patched up to date. Have you compiled Samba yourself, or are you using

Hi all, Currently studying the impact of SMT solvers on Clang SA. Can anyone help in telling more about the SMT solvers use in clang SA ? ( Have already tested Z3 SMT solver implemented in GSoC 2018 , also looking for other SMT solvers if possible ) Thanks, Siddharth -------------- next part -------------- An HTML attachment was scrubbed... URL:

We are currently implementing the backends for other solvers (you can follow the progress here: https://github.com/mikhailramalho/clang). So far we got Boolector, MathSAT and Yices ready. CVC4 should be done soon. When used to refute bugs, they all give roughly the same results: a ~5% speedup if there are refuted bugs or a ~5% slowdown if no bug is refuted. I've only tried to analyze one

>but if I disable hyperthreading (noht on the kernel line in lilo/grub) Could the same result could be obtained if hyperthreading is disabled from the BIOS ? Supermicro Motherboards (most Phoneix based) have this option Also, would we see same pops and clicks in a dual CPU box (Zeon) then ? SW Message: 1 Date: Wed, 07 Jan 2004 14:32:16 -0500 From: Jeremy McNamara <jj@nufone.net> To:

Hi: Does Trixbox support ACPI and IO-APIC out of the box? My Trixbox server isn't seeing the mainboard's APIC. -Stephen-

Hello Ted, 2013/9/11 Ted Mittelstaedt <tedm at mittelstaedt.us> > Hi All, > > About a month ago APC announced they were including MODBUS protocol > support in their new APC UPSes. The technical note on this is here: > > http://www.apcmedia.com/**salestools/MPAO-98KJ7F/MPAO-**98KJ7F_R0_EN.pdf<http://www.apcmedia.com/salestools/MPAO-98KJ7F/MPAO-98KJ7F_R0_EN.pdf>

CentOS 5.7 x86_64. Lots of hosts NFS mounting a file system. All are configured identically (same LDAP servers, same DNS, same autofs config, same patches, etc). On some of them I see an NFS mount displaying a host name: % df -P | grep smt <hostname>:/mnt/foo 1651345888 264620688 1386725200 17% /fs/home/smt and on some just the IP address: % df -P | grep smt aa.bb.cc.dd:/mnt/foo

Hi All, About a month ago APC announced they were including MODBUS protocol support in their new APC UPSes. The technical note on this is here: http://www.apcmedia.com/salestools/MPAO-98KJ7F/MPAO-98KJ7F_R0_EN.pdf "Application Note #176 Modbus Implementation in APC Smart-UPS" The APC "announcement" appeared on their site in their user blogs by an APC employee, here:

On Sat, 15 Feb 2020, Rowland penny via samba wrote: > On 15/02/2020 19:15, Steve Thompson via samba wrote: >> Now I am using samba 4.11.6 on CentOS 7.7, patched up to date. > Have you compiled Samba yourself, or are you using Samba packages and if so, > where from ? >> The DC, on a KVM VM, is the only node configured so far. I am using >> winbind in place of sssd