search for: system_timer

Hi, I recently started working on an existing Ruby On Rails application which production environment is linux. However we are trying to create a dev. platform with Eclipse in Windows and everything was working fine until one of our classes was trying to import system_timer. The initial error I got is: no such file to load -- system_timer Application Trace: c:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'' c:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'' c:/Ruby/lib/ruby/gems/1.8/gems/...

Hi, I have done some debugging to find out the root cause of bug 1282, which has the following symptoms with paravirtualized guests: - after a live migrate, the time on the guest can jump - after a live migrate, the guest "forgets" to wake up processes - after a domU save, dom0 reboot and domU restore, the time is correct but processes are not woken up from sys_nanosleep The problem

Calculate the offset of the physical host's Real Time Clock (RTC) from UTC and pass this to virt-v2v through the libvirt XML description of the physical machine. The libvirt XML is modified to add one of the following: (no <clock/> element) - if the RTC could not be read or there was some other time calculation error. <clock offset='utc' /> - if the RTC is the

...the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir ..... --without-exsltlib extconf.rb:57:in ``'': No such file or directory - xml2-config --cflags (Errno::ENOENT) from extconf.rb:57 3) gem install system_timer Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing system_timer: ERROR: Failed to build gem native extension. C:/RailsInstaller/Ruby1.8.7/bin/ruby.exe extconf.rb creating Makefile make gcc -I. -I/C/Rails...

Unlike the <cpu> node (see the other thread on the libguestfs ML), reading the Real Time Clock doesn't require libvirt and does work :-) For reference, read: https://libvirt.org/formatdomain.html#elementsTime https://en.wikipedia.org/wiki/Time_zone To test this you can run virt-p2v under qemu with a RTC offset: make -C p2v \ run-virt-p2v-in-a-vm \

When using a vtsc, hvm_set_guest_time changes hvm_vcpu.stime_offset, which is used in the vcpu time structure to calculate the tsc_timestamp, so after updating stime_offset we need to propagate the change to vcpu_time in order for the guest to get the right time if using the PV clock. This was not done correctly, since in context_switch update_vcpu_system_time was called before vmx_do_resume,

...to do anything as the process still took 120-130 seconds to complete. After digging around a bit, I discovered this writeup about timeout and system calls (http://adamblog.heroku.com/past/2008/6/17/battling_wedged_mongrels_with_a/). I immediately installed SystemTimer (http://ph7spot.com/articles/system_timer) and tried again: begin require ''system_timer'' MyTimer = SystemTimer rescue LoadError require ''timeout'' MyTimer = Timeout end def invoke(rfc) MyTimer.timeout_after(20.seconds) do rfc.invoke end rescue Timeout::Error raise Timeout...

Hi all, I try to get vm cpu stat by function "virDomainGetCPUStats", when the vm Cpu usage is 100%, I can see from the vm shell by "top", when the info Get by the "virDomainGetCPUStats" show only the "cpu_time" increased, "user_time" and "system_time" was not changed at all. Is that correct ? How can I get the vm cpu usage?

Hello, I'm trying to use libvirt as a non-root user to obtain statistics on the CPU usage by VMs using the Python API. I'm performing basically the following steps: import libvirt conn = libvirt.openReadOnly(None) dom = conn.lookupByUUIDString('268e38ea-1bc7-41e4-c19e-8eff682e58e4') dom.getCPUStats(True, 0) However, they result in the following error: libvir: QEMU Driver

paravirt clock source patches, next round. There is now a pvclock-abi.h file with the structs and some longish comments in it and everybody is switched over to use the stuff in there. cheers, Gerd

paravirt clock source patches, next round. There is now a pvclock-abi.h file with the structs and some longish comments in it and everybody is switched over to use the stuff in there. cheers, Gerd

Respin of the paravirt clock patch series. On the host side the kvm paravirt clock is made compatible with the xen clock. On the guest side some xen code has been factored out into a separate source file shared by both kvm and xen clock implementations. This time it should work ok for kvm smp guests ;) cheers, Gerd

Respin of the paravirt clock patch series. On the host side the kvm paravirt clock is made compatible with the xen clock. On the guest side some xen code has been factored out into a separate source file shared by both kvm and xen clock implementations. This time it should work ok for kvm smp guests ;) cheers, Gerd

paravirt clock source patches, next round, with a bunch of changes in the host code according to Avi's review comments and some minor code tweaks. cheers, Gerd

paravirt clock source patches, next round, with a bunch of changes in the host code according to Avi's review comments and some minor code tweaks. cheers, Gerd

paravirt clock source patches, next round. There is now a pvclock-abi.h file with the structs and some longish comments in it and everybody is switched over to use the stuff in there. Some minor tweaks after super-fast review by Jeremy. The queue is on top of the kvm git tree. The first two patches should have no kvm dependencies and should apply to linus tree just fine. cheers, Gerd

paravirt clock source patches, next round. There is now a pvclock-abi.h file with the structs and some longish comments in it and everybody is switched over to use the stuff in there. Some minor tweaks after super-fast review by Jeremy. The queue is on top of the kvm git tree. The first two patches should have no kvm dependencies and should apply to linus tree just fine. cheers, Gerd

Hello, I need to get how much memory is used by a guest system, in order to implement some monitoring function which tells me if the system is overstressed. I am currently using java apis and the binding which was suggested to me was Domain.memoryStats(); This is a binding to int virDomainMemoryStats (virDomainPtr<http://libvirt.org/html/libvirt-libvirt.html#virDomainPtr>dom,

It seems that VCPU system time isn''t monotonic (using 3.0.4). It seems it might be correlated to when a VCPU is switched across real CPUs but I haven''t conclusively proved that. But e.g.: { old = { time = { version = 0x4ec pad0 = 0xe8e0 tsc_timestamp = 0x22cc8398b7194 system_time =

Hello, I want to emit a structured log entry (in YAML) for every request that hits my Rails app. For example, an entry in this log would look something like: --- SYSTEM_TIME: 0.0166666666666667 USER_TIME: 0.0999999999999996 DB_TIME: 0.00247621536254883 REAL_TIME: 0.091976 STATUS_CODE: 500 SESSION_ID: 64ad46a8841c66bbf64e93335cedc50d REQUEST_ID: 32d6a42f-da58-43e2-ab27-09d3e2a775cb