similar to: question about VM outperforms physical machine on a micro benchmark

Dear all, When I compared the performance of some application on both a Xen domU and a standard linux machine (where domU runs on a similar physical mahine), I notice the application runs faster on the domU than on the physical machine. Instrumenting the application code shows the application spends more time on popen() calls on domU than on the physical machine. I wonder if xenlinux does some

Hi all, I tried to boot up a VM using two options (a) reading boot information from a config file (b) adding boot information directly to the command line. However, I got "IP-Config: Unable to set interface netmask (-22)" problem when using option (b). For (a), I don''t have such problem. The boot information for both (a) and (b) is same. Could you please let me know what I am

Hi, Dear Mr/Mrs. I have trouble in connecting to a VM ESXi server with python. I am a developer using libvirt to control remote VM ESXi with python language. But I am not able to connect to a remote VM ESXi server. I make my try to solve this issue: 1: I use the function libvirt.Open() to open the remote VM ESXi Server, but I don't know how to input the password. It seems that there is no

On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: > Hi LLVMers, > I am a PHD student in CS dept in UIUC, I am doing a project for > Vikram's course, it is about PRE. I would like to know why you didn't > choose SSAPRE in LLVM, since it seems to be more suitable for LLVM (it > can operate directly on SSA form and avoid the conversion between SSA > and bit-vector). Can

On Fri, Apr 4, 2008 at 2:38 AM, Bill Wendling <isanbard at gmail.com> wrote: > On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: > > Hi LLVMers, > > I am a PHD student in CS dept in UIUC, I am doing a project for > > Vikram's course, it is about PRE. I would like to know why you didn't > > choose SSAPRE in LLVM, since it seems to be more suitable for

On Apr 4, 2008, at 4:51 PM, Daniel Berlin wrote: > On Fri, Apr 4, 2008 at 2:38 AM, Bill Wendling <isanbard at gmail.com> > wrote: >> On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: >>> Hi LLVMers, >>> I am a PHD student in CS dept in UIUC, I am doing a project for >>> Vikram's course, it is about PRE. I would like to know why you >>>

Dear all, When I debugged the execution performance of an application using strace, I found there are some system calls like open and stat64 which run faster on XenLinux than the standard Linux. The following is the output of running "strace -c /bin/sh -c /bin/echo foo" on both systems. An open call runs averagely 109 usec on standard Linux but only 41 usecs on XenLinux. An stat64

Hi LLVMers, I am a PHD student in CS dept in UIUC, I am doing a project for Vikram's course, it is about PRE. I would like to know why you didn't choose SSAPRE in LLVM, since it seems to be more suitable for LLVM (it can operate directly on SSA form and avoid the conversion between SSA and bit-vector). Can anyone tell me the reason? Xuehai

On Fri, Apr 4, 2008 at 5:58 PM, Vikram S. Adve <vadve at cs.uiuc.edu> wrote: > On Apr 4, 2008, at 4:51 PM, Daniel Berlin wrote: > > > On Fri, Apr 4, 2008 at 2:38 AM, Bill Wendling <isanbard at gmail.com> > > wrote: > >> On Apr 2, 2008, at 10:11 PM, Xuehai Qian wrote: > >>> Hi LLVMers, > >>> I am a PHD student in CS dept in UIUC,

On Friday, January 20, 2012 03:59:14 PM reed kotler wrote: > We are starting to look at the mips16 and micro mips ports. [snip] I'm looking forward to seeing the mips16 and micro mips support. As an aside, the Mips code generator as it exists looks pretty solid so far in my testing. As I've been building the NetBSD library (and other stuff) using my ELLCC copy of clang/LLVM only the

The micro mips processor assembly language is basically 100% the same as mips32/mips64. There are some assembler directives you add but for a base port, but that is all you need to do. However, the binary instruction encoding is entirely different. There are a combination of 16 and 32 bit instruction encodings. The question is, what's the best way to handle this? Extending tablegen ?

Micro-pump is cool idea for future computer chips http://www.studyandjobs.com/Micro_pump.html or visit http://www.studyandjobs.com/IT_study.htm Regards

The instructions are defined by their encodings, not the assembly syntax. You want separate instruction definitions for the different encodings and select. Between them in the assembler via sub target features. See ARM handling of thumb vs thumb2 vs arm for examples of how to do this. On Sep 5, 2012, at 6:59 PM, reed kotler <rkotler at mips.com> wrote: > The micro mips processor

The LLVM micro conference for the Linux Plumbers Conference 2013 in New Orleans has been approved. http://wiki.linuxplumbersconf.org/2013:llvm http://www.linuxplumbersconf.org/2013/3-more-microconferences-added-for-2013/ "Over the past year there has been a lot of progress in patching LLVM and Clang in order to be able to compile the Linux kernel. Over the same time period progress was

Hi all, I am new to rsync and I apologize in advance if my question is shallow. I write a simple script to use rsync to transfer a big file (~600MB)from a single source to variable number of destinations in a parallel way. When I transfer the file to 4 destination machines, I get X overall transfer time. Then I transfer the same file to 8 destination machines and I get Y overall transfer time.

Hello, I'am using a LSI 1068e OEM version from Super Micro (see lspci). I was able to install a plain CentOS5 with the binary drivers I got from Super Micro. 06:00.0 SCSI storage controller: LSI Logic / Symbios Logic Unknown device 0059 (rev 04) Subsystem: Super Micro Computer Inc Unknown device a180 Flags: bus master, fast devsel, latency 0, IRQ 10 I/O ports at e000

Hi, after installing 3.6.1p2 I noticed spurious PAM login failures even with PermitEmptyPasswords set to "no": sshd(pam_unix)[1740]: authentication failure; logname=XXX uid=0 euid=0 tty=NODEVssh ruser= rhost=localhost user=XXX After looking at the code I noticed the following in the portability p2 patch: +++ openssh-3.6.1p2/auth-passwd.c 2003-04-29 19:12:08.000000000 +1000

Hi, With the success of last year's Virtualization micro-conference track at Linux Plumbers 2010, I have accepted to organize a similar track for Linux Plumbers 2011 in Santa Rosa. Please see the official Linux Plumbers 2011 website for full details about the conference: http://www.linuxplumbersconf.org/2011/ The Linux Plumbers 2011 Virtualization track is focusing on general free software

Hi, With the success of last year's Virtualization micro-conference track at Linux Plumbers 2010, I have accepted to organize a similar track for Linux Plumbers 2011 in Santa Rosa. Please see the official Linux Plumbers 2011 website for full details about the conference: http://www.linuxplumbersconf.org/2011/ The Linux Plumbers 2011 Virtualization track is focusing on general free software

Hi, With the success of last year's Virtualization micro-conference track at Linux Plumbers 2010, I have accepted to organize a similar track for Linux Plumbers 2011 in Santa Rosa. Please see the official Linux Plumbers 2011 website for full details about the conference: http://www.linuxplumbersconf.org/2011/ The Linux Plumbers 2011 Virtualization track is focusing on general free software