search for: xentrac

Hello, I have a question about the way Xentrace takes a trace. In previous versions of Xen, I took a trace by setting the size of buffers, activating them and writing the information into a file (optional). setsize 20 tbctl 1 xentrace /tmp/xentrace.dat Now I''m using xen-unstable and I see that setsize is already integrated in xentra...

Hi, I've made some SAP benchmarks on my Xen system and discovered a huge difference in the performance of a "xened" SAP system compared to a native SAP system. Hence, I tried to figure out what might cause this 'overhead' and run a xentrace (listining to all events). Xentrace produced 24gb data and I converted it to 27gb human-readable data. After I gathered the human-readable data, I filtered the data and counted the appearance of each event. So far, so good. Now it comes: although I used paravirt-guests, the xentrace-tool reported...

...D | TRC_VMX. I feel strange about this. I do not think scheduling is a part of memory management. Am I right? If not, please tell me the background TRC_MEM is defined as TRC_SCHED | TRC_VMX. If so, please apply this patch. This patch defines TRC_MEM as an independent event mask. In addition, xentrace accepts ''-e mem'' option so that it puts memory management events in trace buffers. The manual page (xentrace.8) is also modified accordingly. Tested by compiling on x86 and ia64, booting Dom0 and DomU, taking a xentrace log with ''-e mem'' option. Signed-off-by...

Hi, I am trying to correlating performance issue in guest VM with the scheduling trace from Xentrace. User-mode application in guest VM periodically dump APIC ID and RDTSC into trace. I also start Xentrace in Dom0 during the same period. However, I notice that range of TSC values report both trace is completely disjointed. TSC values from Xentrace is always greater than what guest VM see, even...

I am trying to learn some more about the way windows does TPR writes, and tried xentrace for the first time. I did ''xentrace --time-interval=5 xentrace.out'' to capture some data, and then ran it through ''xentrace_format'' using the supplied example defs file. I can see some PF_XEN entries with virt=0xFFFE0080 (address of TPR), but I want to know the...

Hello, I''ve been trying to get xenmon.py and xentrace to work, but I consistently get the following (on a couple of different machines/kernels): kibab kibab # xentrace /root/xentrace.log ERROR: Failure to get trace buffer pointer from Xen (22 = Invalid argument) Did I miss an option that has to be turned on or something? Is there some other sett...

Hi, I have read a mail in the mail list about xentrace and xentrace_format. But I am still puzzled on how to use them. Could somebody give me an example about how to use xentrace and xentrace_format. What I have done is that: 1. Root:/# xentrace /var/perftests/xentrace.log Then I use xentrace_format to get what I want 2. cat /var/perf...

Hi, I am using xen-unstable and interested to trace the hypervisor. In previous versions, I was able to trace it by: setsize 20 tbctl 1 xentrace /tmp/xentrace.dat And these functions don''t exist in xen-unstable. xentrace --help shows that in more recent versions the buffers'' size could be determined as a parameter for xentrace. But I can not find any replacement for tblctl. Using: # xentrace /tmp/xentrace1.dat I receiv...

Hi, I have read a mail in the mail list about xentrace and xentrace_format. But I am still puzzled on how to use them. Could somebody give me an example about how to use xentrace and xentrace_format. What I have done is that: 1. Root:/# xentrace /var/perftests/xentrace.log Then I use xentrace_format to get what I want 2. cat /var/perf...

xentrace, setsize and the hypervisor don''t seem to be on the same page. If tracing is not enabled, the hypercall will only allow TBUF_SET_SIZE and TBUF_ENABLE. However, set_size calls TBUF_GET_INFO, and xentrace wants to call TBUF_SET_EVT_MASK and TBUF_SET_CPU_MASK before calling TBUF_ENABLE. I...

Package: xen-utils-common Version: 3.0.3-0-2 Severity: minor xentrace(8) is missing and it seems there's one around: http://www.die.net/doc/linux/man/man8/xentrace.8.html -- System Information: Debian Release: 4.0 APT prefers unstable APT policy: (990, 'unstable'), (500, 'testing'), (1, 'experimental') Architecture: i386 (i686) Shel...

Hello, this patch introduces HVM tracing: one tracing class for both, SVM and VMX. It adds several new trace events. So we can differentiate between them in the xentrace formats file and format each event''s data items appropriately. With this patch the xentrace_format output is much more informative. The previous simple tracing in SVM and VMX is completely replaced. Unfortunately I could not yet test the VMX part beyond compiling. Any volunteers? Help is...

...Corp., Austin, Tx (512) 838-9253 T/L: 678-9253 ryanh@us.ibm.com diffstat output: tools/python/xen/lowlevel/xc/xc.c | 3 ++- tools/python/xen/xend/XendNode.py | 4 ---- tools/xenmon/xenbaked.c | 5 +---- tools/xenstat/libxenstat/src/xenstat.c | 4 +--- tools/xentrace/xentrace.c | 5 +---- xen/arch/ia64/xen/dom0_ops.c | 1 + xen/arch/x86/dom0_ops.c | 2 +- xen/include/public/dom0_ops.h | 1 + 8 files changed, 8 insertions(+), 17 deletions(-) Signed-off-by: Ryan Harper <ryanh@us.ibm.com> --- diff...

This patch (attached) fixes a small problem in xentrace_format. Signed-off-by: Yang Xiaowei <xiaowei.yang@intel.com> Zhou Ting <ting.g.zhou@intel.com> --- diff -r 0df3bf8aac1e tools/xentrace/formats --- a/tools/xentrace/formats Mon Jun 16 16:35:17 2008 +0100 +++ b/tools/xentrace/formats Thu Aug 21 17:36:03 2008 +0800 @...

Hi, Xenmon does not work correctlly after xentrace changes in cs 17000. Attached patch fixes this problem. This patch modifies access to trace buffer same as tools/xentrace. Signed-off-by: Naoki Nishiguchi <nisiguti@jp.fujitsu.com> Regards, Naoki Nishiguchi _______________________________________________ Xen-devel mailing list Xen-devel...

Hi, All This is a patch for xentrace.c. This routine checks the trace buffer is initialized or not. If not, the trace buffer is initialized by using this patch. This is avoiding following message. ERROR: Failure to get trace buffer pointer from Xen (22 = Invalid argument) This routine is based on the specification of the trace buff...

Hi All, I am running xentrace on an idle machine (dom0 has 2 cpus). There are 4 cpus in the system > date xentrace -e0x82000 > idle.out date The sampling interval is 25 seconds. However when I format and look at the output, I see the sample time is 761 seconds or something bizarre Looks like the cpu cycles have gone bese...

Package: xen-utils-3.0.3-1 Version: 3.0.3-0-2 Severity: normal # xentrace /usr/lib/xen-3.0.3-1/bin/xentrace: error while loading shared libraries: libxenctrl.so: cannot open shared object file: No such file or directory It seems that we need a /etc/ld.so.conf.d/xen file that includes directory /usr/lib/xen-3.0.3-1/lib . -- System Information: Debian Release: 4.0 APT...

Hi, xentrace_format cannot use "0x016x" format as we expect. It show only %(N) as "0x016x" format, not as "%(N+1)08x%(N)08x". So I fixed tools/xentrace/formats by using "%(N+1)08x%(N)08x" format. Also I added some TRC_PV entries. Signed-off-by: Akio Takebe <takebe_ak...