similar to: How to count I/O consuming in OProfile while profiling xapian

CentOS Errata and Enhancement Advisory 2014:1918 Upstream details at : https://rhn.redhat.com/errata/RHEA-2014-1918.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 0f0c9183544e6f82486346105c34a54afcd715514e13cc2ce28069102d32b057 oprofile-0.9.9-6.el6_6.i686.rpm

Nicolas Thierry-Mieg, We followed your instructions to yum install oprofile-gui. We were able to install oprofile-guii.i386 0:0.9.4-15.el5.centos and oprofile.i386 0.0.9.4.15.el.5.centos. I was wondering what our next step should be. I tried ./configure --with-kernel-support with oprofile-0.9.6 and obtain a warning, a working QT not found, no GUI was built. Should we try to build

CentOS Errata and Bugfix Advisory 2018:2443 Upstream details at : https://access.redhat.com/errata/RHBA-2018:2443 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 1f2093e41f3f0283bb7c3d198f3d116d21b6930b8675becbd33c65fa694760f6 oprofile-0.9.9-25.el7_5.1.x86_64.rpm

Hello Xenoprof Users, Can someone please verify the steps to get a oprofile session profile multiple sessions? I am using a file VBD for spawning two guest OS domains on the host. I am doing the following: 1.) On dom0 Opcontrol --xen=/boot/xen-syms-blah 2.) On domU domID: 41 Opcontrol --vmlinux=/boot/vmlinux-2..blah 3.) On domU domID: 42 Opcontrol

The attached patch fixes a Xen panic when a domain is shutdown before oprofile is stopped. Without this patch, free_xenoprof_pages() is called before the domain is destroyed and that, in turn, prevents oprofile from cleaning up pages shared with guests. Shutting down a domain without terminating oprofile therefore causes a Xen panic at a later point in time. The patch was generated against Xen

Mi Maurice, A follow up to Andy's comments: MCJIT can find line numbers for ELF files, at least in limited circumstances. I know because I broke the regression test for it while doing some cleanup recently. ;) Looking at lib/ExecutionEngine/OProfileJIT/OProfileJITEventListener.cpp, I see the line: // TODO: support line number info (similar to IntelJITEventListener.cpp) >From a glance at

Dear experts, to monitor performance of applications on our private clouds I decided to use Xenoprof. For that, I installed patched OProfile 0.9.5 on Dom0 and DomU. Then, I started the daemon on Dom0 opcontrol --start-daemon --active-domains=1 --separate=library --event=LLC_MISSES:90000 and received the following error: /usr/local/bin/opcontrol: line 1171: echo write error: invalid

Hi, I am wondering what tools are available to troubleshoot KVM I/O problems on CentOS 5, given that the kernel is 2.6.18 with some backports to support virtualisation? kvm_stat / kvmtrace - These seem to be available in the kvm-tools package. ftrace related things seem not to be available. OProfile is available, can it be used? Also, SystemTap is available, can it be used? Anything

Philip Schaffner, Thank you for your reply. I guess we will have to wait until Centos 6 arrives to get a working QT. Did you see Nicolas Thierry-Mieg's response regarding yum install oprofile-gui. We were able to install oprofile-guii.i386 0:0.9.4-15.el5.centos and oprofile.i386 0.0.9.4.15.el.5.centos. Thank you. -------------- next part -------------- An HTML attachment was

I've been trying to get oprofile results for jitted code without success. I built an 3.5.0 llvm with oprofile enabled, and tested it with lli on a small test case. I built the latest oprofile from the git repository. Debugging I can see that lli is registering the listener and making the oprofile calls to the libopagent api to specify the names and address ranges of jit'd routines, and

Hi I am trying to use oprofile with centos 6.0. I know that the debug-info for the kernel is not available, so I believe I used the correct switches to account for this. here is my script... # reset everything opcontrol --shutdown rm /root/.oprofile/da* opcontrol --separate=kernel --no-vmlinux opcontrol --event=CPU_CLK_UNHALTED:100000 opcontrol --start sleep 5

Hi Keir: It has been brought to my attention that modular oprofile is broken because it now calls get_vm_area which is not an exported function. This appears to be the result of the changeset that removed vm_map_xen_pages which was only used by oprofile. So we either need to export get_vm_area in Xen, or put that function back. What do you think about this? Thanks, -- Visit Openswan at

Hi! I am trying to profile my custom 2.6.37 linux kernel with oprofile in centos 5.5, and i have encountered the following problem. (Before everyone starts shouting, I know that custom kernels are not supported by centos team, however I really need to run a modified version, due to a project concerning my MSc thesis. So i hope for your understanding :-) . I have build the kernel

Hi, as now i am doing profiling and found that the QEMU should be one of the major reason for the low network throughput on HVM Guest. In order to know details about it, it will be better to get the breakdown of QEMU in Oprofile. As see from the following results,there is only two breakdowns, how can I run the oprofile to get more detailed QEMU informations? 29933 12.5726 qemu-dm

Hi all, Is anyone using oprofile? I'm getting segfaults from opreport at the moment, and I'm not sure if it is opreport, or just me. In case it is something just plain daft I am doing, here is how it goes: opcontrol --reset opcontrol --setup --no-vmlinux opcontrol --start ... now I run my program, /tmp/myprog ... opcontrol --dump opcontrol --shutdown then I run, opreport -l

I'm currently looking at oprofile. I see its configured in for the standard kernel but not for unsupported. Any reason? Could this be changed? (Guess I could build my own - just hoping to avoid it) TIA Daveh

Add xenoprofile function to oprofile to obtain the mode, adding check for hvm guest. Applies cleanly to xen-unstable c/s 11831. Please apply to xen-unstable.hg. We also want these patches to be in a 3.0.3-1 base whenever that is branched. Signed-off-by: Tom Woller <thomas.woller@amd.com> --Tom _______________________________________________ Xen-devel mailing list

Thanks for the info. I am using old JIT. So that should not be a problem. I will take a look at using oprofile. I have never used it - so will be somewhat of a learning curve. I notice that the configure script has a --with-oprofile option. In addition to enabling that, is there something else that also needs to be done? My copy of LLVM is compiled with --enable-optimized. Will --with-oprofile

So, we just moved to some much faster hardware. intel q6600 CPU, 8Gb unbuffered ECC, ICH7 sata (2x1TB disks) - and we were irritated and puzzled to find that the new setup had really, really slow I/O. The odd thing is that the performance is fine if you just mount the LV directly from the Dom0... but if you xm block-attach it to the Dom0 and then mount it, you get 1/10th the speed. we are

Hi I am using oprofile 0.9.3 on xen cs 16540 on an Intel system. When I look at the top "hot" functions, I see p2m_change_type being one of the top function in xen-syms. This function is only in the svm (AMD) code and should not appear on an Intel system. I see that this function is not being clled at all when I am running my apps as I have put printk in the functions and they do