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  • how to tune libstdc++ to the native architecture when building gcc

    - by John D
    I recently found that when I build my C++ software, I get about a 10% speedup by using the g++ march=native option. When compiling gcc and libstc++, is it possible to tune the libstdc++ library to the native architecture as well? I couldn't find any mention of this in the gcc install configuration documentation. (I'm building gcc 4.6.2 on Linux Mint 11 with an Intel Core i7 Sandy Bridge-E processor.)

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  • Speed of TrueCrypt whole disk encryption

    - by Gareth
    I'm getting a new development laptop soon, and I'm thinking of using TrueCrypt to encrypt the whole disk. What kind of performance drop can I expect? 10%? 30%? more? Also, assuming the workload has an effect, would compiling/using Visual Studio be affected much? I cannot seem to find anything like this on the web.

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  • Can't get Apache 2.2.21 to compile with OpenSSL support

    - by angstwad
    Alright -- having a bad couple days here compiling Apache 2.2.21 on CentOS 5.7 with the following configure commands: ./configure --enable-ssl=shared --with-ssl=/usr/local/openssl I've compiled from source OpenSSL 1.0.0e from source: ./config --prefix=/usr/local --openssldir=/usr/local/openssl shared zlib-dynamic I attempt to start Apache and it returns: httpd: Syntax error on line 54 of /usr/local/apache2/conf/httpd.conf: Cannot load /usr/local/apache2/modules/mod_ssl.so into server: /usr/local/apache2/modules/mod_ssl.so: undefined symbol: SSL_get_servername If I look at how the libraries are linked, this is what I get: [root@web1 modules]# ldd mod_ssl.so libssl.so.6 => /lib64/libssl.so.6 (0x00002aaaaace4000) libcrypto.so.6 => /lib64/libcrypto.so.6 (0x00002aaaaaf30000) libdl.so.2 => /lib64/libdl.so.2 (0x00002aaaab281000) libz.so.1 => /lib64/libz.so.1 (0x00002aaaab486000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00002aaaab69a000) libc.so.6 => /lib64/libc.so.6 (0x00002aaaab8b5000) libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 (0x00002aaaabc0e000) libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x00002aaaabe3c000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00002aaaac0d1000) libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 (0x00002aaaac2d4000) /lib64/ld-linux-x86-64.so.2 (0x0000555555554000) libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 (0x00002aaaac4f9000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00002aaaac702000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00002aaaac904000) libselinux.so.1 => /lib64/libselinux.so.1 (0x00002aaaacb19000) libsepol.so.1 => /lib64/libsepol.so.1 (0x00002aaaacd32000) Basically, I've tired compiling from source OpenSSL (both 0.9.8r and 1e), having yum reinstall from the repos, done a make clean and remade both OpenSSL and Apache numerous times -- but I can't get it to compile into the apache base or dynamically as a shared object file. What am I doing wrong here? Update 1: After doing a make clean and make distclean, I've reconfigured with the same parameters as above without any effect. The config.log is at Pastebin. Update 2: Modifying the LD_LIBRARY_PATH had no effect on the lib-deps of mod_ssl.so. UPDATE 3: I've compiled and recompiled many times, and verified with ldconfig that the OpenSSL libs dir is in my path, and included in ld.so.conf. Still cannot get httpd/mod_ssl to load the library at runtime.

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  • CentOS install proftpd with yum

    - by ServerBloke
    Server: CentOS 6.2 64bit How can I install Proftpd using yum? A search for the package doesn't find it: yum list proftpd Error: No matching Packages to list Although my CentOS 6 VPS does find it, but this server doesn't. I have read I need to install an rpm of some kind. How would I do that and where is the reliable place to get it (64bit)? I have done Proftpd installs by compiling the source in the past but would prefer to use yum this time.

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  • Any Linux distro which is supported on EFI enabled XServe

    - by geoaxis
    I am looking into installing Linux on a test XServe machine and see how it goes overall. We have our entire infrastructure on OSX and would like to move to Linux servers. Is there any distribution which has good support for XServe? Google search yielded nothing conclusive. I don't mind hacking around for personal use (compiling kernel, tweaking packages and configurations) but when running in production it's good to be cautious. Paying for commercial support is definitely an option.

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  • Xeon X3220 Dual-Core 2.4 GHz - which march setting for gcc?

    - by hurikhan77
    Should I use -march=nocona or -march=core2 when compiling binaries for this processor with gcc 4.3? vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz stepping : 8 cpuid level : 10 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni ssse3 cx16 lahf_lm I cannot really find if this CPU is already core2 architecture... Only find information about the quad core variants, but this CPU is only dual core.

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  • How do I enable PHP apache_request_headers() or change PHP into an apache module

    - by inac
    PHP, WHM, and several other services are already installed on a CentOS x64 server I am trying to migrate data to. Many of my existing PHP scripts are dependent on PHP's apache_request_headers() function, which the current server's PHP configuration does not support. Apparently, compiling PHP as an Apache module is one solution, but are there other ways to enable this (without uninstalling PHP, reinstalling, etc., and all dependent services), perhaps as easy as modifying php.ini, somehow?

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  • OpenSSL 0.9.8k or higher on CentOS 5?

    - by davr
    I need to upgrade OpenSSL on my CentOS server to 0.9.8k or higher, however the latest version in the official CentOS repositories is 0.9.8e, much too old. Is there a 3rd party repository I can use that has newer versions of OpenSSL libraries? If not, can someone provide a quick walkthrough of compiling a newer version of OpenSSL for CentOS? I need it to replace the built in version, so the walkthrough would have to explain how to create a CentOS-compatible RPM.

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  • Any option to change Windows XP default Copy Here naming from "Copy of {name}.{ext}" to "{name}.{ext

    - by scunliffe
    Is there an option or tool that will allow me to change the default naming convention for files copied into the same directory in Windows (XP) and above. e.g. from: Copy of {name}.{ext} to: {name}.{ext}.copy Currently: original_file.php Copy of original_file.php Desired: original_file.php original_file.php.copy This would make finding/working with duplicated files much easier (they auto-sort together) and the filetype (by extension) changes thus it can't accidentally "break" something (e.g. if it were a *.java file, upon compiling I would get errors)

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  • Computer "Server"

    - by user328379
    so at home we had the idea of instead of buying 3 different pc's we would somehow create a "server" for the computers where a cable would come to our screens and keyboard and mouses, so the actual pc was somewhere else in the house with all the others. Does such a thing exist? And is it possible to have such a thing for high performance workflow? (Compiling, High-End Games, just as if it was a separate pc )

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  • Tmux installation problems

    - by RayQuang
    hI, I am trying to install the terminal multiplexer tmux on my Debian Lenny server so that I can have multiple terminals through ssh. However I have had a lot of difficulty installing it from the debian package, and by compiling it. When I try the package it says something about the wrong version of libc6, and when I compile it I get the following error: server.o: In function `server_start': server.c:(.text+0x273): undefined reference to `event_reinit' collect2: ld returned 1 exit status make: *** [tmux] Error 1 Help would be very much appreciated, RayQuang

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  • Install Visual Studio 2010 on SSD drive, or HDD for better performance?

    - by Steve
    I'm going to be installing Visual Studio 2010. I already have my source code on the SSD. For best performance, especially time to open the solution and compiling time, would it be better to install VS 2010 on the SSD or install it on the HDD. If both were on the SSD, loading the VS 2010 files would be quicker, but there would be contention between loading the source and the program files. Thanks!

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  • What is the go-to way of configuring PHP with Nginx

    - by Kyle
    I've heard many good things about Nginx lately, and I wanted to put it on my slicehost server. I am in a fix for ram, and would like to get Wordpress and wp-super-cache configured. I was just wondering the 'recommended way' of get PHP setup, because I see so many webpages saying their way is correct. No compiling if possible please, it makes updating a drag D=

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  • Install Visual Studio 2010 on SSD drive, or HDD for better performance?

    - by Steve
    I'm going to be installing Visual Studio 2010. I already have my source code on the SSD. For best performance, especially time to open the solution and compiling time, would it be better to install VS 2010 on the SSD or install it on the HDD. If both were on the SSD, loading the VS 2010 files would be quicker, but there would be contention between loading the source and the program files. Thanks!

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  • i7 4770k or i7 4930k - Which for faster compile times? [on hold]

    - by Chumm
    I've looked up comparisons and found that single core performance seems to be better on i7 4770k, but has less cores that the i7 4930k. Would VS take advantage of extra cores when compiling, or would the difference be negible. I'm looking to buy the PC primarily for programming, so which would be better for visual studio? I already have the rest of my build ready, I just need to decide on this! :) thanks

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  • Install from SVN to Ubuntu

    - by Industrial
    Hi everyone, I'm still a bit of a freshie on Ubuntu and linux in general, so please bare with me. I found this package that I would like to implement on my Ubunty SSH managed server: http://repcached.lab.klab.org/ Is that possible in any way, or does it requres a degree in some to-me-unknown compiling rocket science? Thanks!

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