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Ormaaj
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PostPosted: Tue Mar 31, 2009 9:11 pm    Post subject: Reply with quote

Isn't there any way to make cpufreq work on an overclocked system with speedstep? It would be nice to take advantage of that 21st multi on the 920.
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JanR
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PostPosted: Wed Apr 01, 2009 4:24 pm    Post subject: Reply with quote

Hi,

Quote:

Isn't there any way to make cpufreq work on an overclocked system with speedstep? It would be nice to take advantage of that 21st multi on the 920.


I did one test with external clock set to 166 (instead of 133). "mhz" from lmbench gave nearly 4 Ghz so full turbo (22->24 for only one loaded core) seems to work with "normal" acpi-cpufreq-governor if you only increase reference clock.

Keep in mind that "turbo" is only activated in the max+1 pstate (2934 in case of i7 940) and is NOT shown in /proc/cpuinfo!

Greetings,

Jan
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JanR
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PostPosted: Wed Apr 01, 2009 4:29 pm    Post subject: Reply with quote

Hi again,

Quote:

Hi, could someone tell where is ICH10R kernel support? I just found jmicron driver and sata ICH5/6/7/8 but no ICH10R, should i enable multipath in raid configuration for a raid0 setup? (kernel 2.6.28). I'm running i7 920 on a P6T, thanks in advanced :)


ICH8 should do... but why? AHCI is much more useful for SATA disks!

Quote:

EDIT: I also enabled NUMA during kernel compilation phase as kernel help recommends it.


It does not!

Code:

For 64-bit this is recommended if the system is Intel Core i7
(or later), AMD Opteron, or EM64T NUMA.


...if the system is xyz NUMA.

As I wrote - an i7/Opteron NUMA system needs at least TWO sockets, otherwise it cannot be NUMA.

Greetings,

Jan
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soya
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PostPosted: Fri Apr 10, 2009 4:18 pm    Post subject: Reply with quote

Hi, so for i7 processors what's better to use -march=native, -march=core2, -march=nocona? thanks :)

Core2 enables some flags which native is not enabling. Try running:

Code:

 LC_ALL=C gcc -Q --help=target  -march=native > march-native
 LC_ALL=C gcc -Q --help=target  -march=core2 > march-core2
 diff -u march-core2 march-native

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ectoterrestrial
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PostPosted: Wed Apr 15, 2009 8:45 pm    Post subject: Reply with quote

LC_ALL=C gcc -Q --help=target -march=native -msse4 > march-native
LC_ALL=C gcc -Q --help=target -march=core2 -msse4 > march-core2
diff -u march-core2 march-native

This is what I get from "diff -u march-core2 march-native ".
Code:

--- march-core2   2009-04-15 15:33:28.161744769 -0500
+++ march-native   2009-04-15 15:33:22.809806247 -0500

-   -mcx16                            [disabled]
+  -mcx16                            [enabled]
-   -msahf                              [disabled]
+  -msahf                            [enabled]
-    -mtune=                           
+  -mtune=                           core2


I'm on a Core i7 system. Are you running this on an i7 processor?

http://gcc.gnu.org/onlinedocs/gcc-4.3.3/gcc/i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options
Quote:


-mcx16
This option will enable GCC to use CMPXCHG16B instruction in generated code. CMPXCHG16B allows for atomic operations on 128-bit double quadword (or oword) data types. This is useful for high resolution counters that could be updated by multiple processors (or cores). This instruction is generated as part of atomic built-in functions: see Atomic Builtins for details.

-msahf
This option will enable GCC to use SAHF instruction in generated 64-bit code. Early Intel CPUs with Intel 64 lacked LAHF and SAHF instructions supported by AMD64 until introduction of Pentium 4 G1 step in December 2005. LAHF and SAHF are load and store instructions, respectively, for certain status flags. In 64-bit mode, SAHF instruction is used to optimize fmod, drem or remainder built-in functions: see Other Builtins for details.


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d2_racing
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PostPosted: Thu Apr 16, 2009 1:56 am    Post subject: Reply with quote

@ectoterrestrial, thanks for these commands, I didn't know that :P
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milomak
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PostPosted: Sat May 16, 2009 10:21 am    Post subject: Reply with quote

d2_racing wrote:
When you do this, if you run :

Code:

# time emerge -e system


Post your time :P


real time was just over 108min.

it's taken a while to get here as my system has been crashing. three mobos were killed to get where I am today. I am now runnign an Asus P6T Deluxe v2.

EDIT: Kernel compile time is 7m55s. Wonder how much lower I can get it to go when I fine tune my kernel.
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d2_racing
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PostPosted: Sat May 16, 2009 3:15 pm    Post subject: Reply with quote

Can you post your emerge --info actually ?

I compile my Intel Quad Core Q9550 in about 79 minutes max. So 108 minutes is pretty long.
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milomak
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PostPosted: Sat May 16, 2009 5:16 pm    Post subject: Reply with quote

d2_racing wrote:
Can you post your emerge --info actually ?

I compile my Intel Quad Core Q9550 in about 79 minutes max. So 108 minutes is pretty long.


yeah i just changed to ~amd64 and that took just over 147m30s

still fighting with ati and x so will post the emerge -info shortly. Although I suspect that has a lot of scope to be reduced.

EDIT: includes xfce and xorg
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milomak
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PostPosted: Sat May 16, 2009 6:07 pm    Post subject: Reply with quote

emerge --info
Code:

Portage 2.1.6.13 (default/linux/amd64/2008.0, gcc-4.3.3, glibc-2.9_p20081201-r2, 2.6.28-gentoo-r5 x86_64)
=================================================================
System uname: Linux-2.6.28-gentoo-r5-x86_64-Intel-R-_Core-TM-_i7_CPU_920_@_2.67GHz-with-gentoo-2.0.0
Timestamp of tree: Fri, 15 May 2009 19:00:01 +0000
app-shells/bash:     4.0_p17-r1
dev-lang/python:     2.5.4-r2, 2.6.2
sys-apps/baselayout: 2.0.0
sys-apps/openrc:     0.4.3-r2
sys-apps/sandbox:    1.9
sys-devel/autoconf:  2.63-r1
sys-devel/automake:  1.9.6-r2, 1.10.2
sys-devel/binutils:  2.19.1-r1
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6a
virtual/os-headers:  2.6.29
ACCEPT_KEYWORDS="amd64 ~amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -march=native"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -pipe -march=native"
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://gentoo.mirror.ac.za"
LDFLAGS="-Wl,-O1"
LINGUAS="en_GB en_ZA"
MAKEOPTS="-j9"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X aac acl alsa amd64 arts bash-completion berkdb bzip2 cdr cli cracklib crypt css cups dbus doc dri dvd dvdr dvdread encode esd evo ffmpeg firefox flac fortran gcj gdbm gimp gnome gpm gstreamer gtk hal iconv ipv6 isdnlog jack java6 javascript jpeg kde kdeprefix lame libnotify matroska midi mime mmx mp3 mpeg mplayer mudflap multilib mysql ncurses networkmanager nls nptl nptlonly nsplugin ogg opengl openmp pam pcre pdf perl png pppd pulseaudio python qt3 qt4 readline reflection session spell spl sse sse2 ssl symlink sysfs syslog tcpd truetype unicode vorbis wifi wxwindows x264 xine xinerama xorg xvid zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en_GB en_ZA" USERLAND="GNU" VIDEO_CARDS="vesa fglrx v4l"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
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d2_racing
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PostPosted: Sat May 16, 2009 9:12 pm    Post subject: Reply with quote

Hi, maybe you should add this :

Code:

CFLAGS="-O2 -pipe -march=native -pipe"
CHOST="x86_64-pc-linux-gnu"
CXXFLAGS="-O2 -pipe -march=native -pipe"
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milomak
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PostPosted: Sat May 16, 2009 9:21 pm    Post subject: Reply with quote

d2_racing wrote:
Hi, maybe you should add this :

Code:

CFLAGS="-O2 -pipe -march=native -pipe"
CHOST="x86_64-pc-linux-gnu"
CXXFLAGS="-O2 -pipe -march=native -pipe"


So you are saying I should add a second -pipe tp CFLAGS and CXXFLAGS?

Here is what I have
Code:

CFLAGS="-O2 -pipe -march=native"
CHOST="x86_64-pc-linux-gnu"
CXXFLAGS="-O2 -pipe -march=native"
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d2_racing
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PostPosted: Sun May 17, 2009 2:01 am    Post subject: Reply with quote

Sorry, I didn't notice the -pipe at the beginning.

Can you post this :

Code:

# hdparm -tT /dev/sda
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d2_racing
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PostPosted: Sun May 17, 2009 2:03 am    Post subject: Reply with quote

What kind of hdd do you have ?
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milomak
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PostPosted: Sun May 17, 2009 11:21 am    Post subject: Reply with quote

Code:

# hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   17258 MB in  2.00 seconds = 8638.04 MB/sec
 Timing buffered disk reads:  378 MB in  3.01 seconds = 125.73 MB/sec


It's a 500GB Seagate. I think a 7200.11

I can provide the exact model number tomorrow.
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milomak
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PostPosted: Fri May 29, 2009 10:08 pm    Post subject: Reply with quote

Could the fact that the hdd is ext4 mounted as below be a factor?

Code:

/dev/sda10      /      ext4      relatime,errors=remount-ro    0 1


Barracuda 7200.12 SATA 3Gb/s 500GB Hard Drive is the harddrive.
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PostPosted: Thu Jul 30, 2009 5:31 pm    Post subject: Reply with quote

Anybody still watching this thread?? I could use some advice. My i7 will be here today, and I'll be replacing my current mb/proc (amd 6400+ X2) with the i7 975 in an EVGA X58 Classified (759 limited edition). Any advice on kernel setup would be greatly appreciated. Also my current make.conf has -march=athlon64 will the i7 run with that? I'm thinking I should change to something generic (but what?), then recompile before making the swap then going to -march=native (unless someone has a better suggestion) after the swap. TIA
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burzmali
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PostPosted: Fri Jul 31, 2009 4:17 am    Post subject: Reply with quote

Kronykus wrote:
Anybody still watching this thread?? I could use some advice. My i7 will be here today, and I'll be replacing my current mb/proc (amd 6400+ X2) with the i7 975 in an EVGA X58 Classified (759 limited edition). Any advice on kernel setup would be greatly appreciated. Also my current make.conf has -march=athlon64 will the i7 run with that? I'm thinking I should change to something generic (but what?), then recompile before making the swap then going to -march=native (unless someone has a better suggestion) after the swap. TIA



I did a fresh install when I moved from opteron to i7. It is easy enough to move config files and home directories.
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PostPosted: Fri Jul 31, 2009 4:38 am    Post subject: Reply with quote

Thanks for the reply and I have thought about that, but I'd rather not if I don't have to.... I have a working system as is, and recompiling in the background would not be a problem, but if I reinstall, I'm looking at down time until I can get the necessities reinstalled.... I'm sure it would go quick and all but down time is still down time. I read somewhere about using -march=nocona as an in between so I guess I'm gonna try that. Worst case scenario I have to reinstall anyway...
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PostPosted: Fri Jul 31, 2009 12:16 pm    Post subject: Reply with quote

Kronykus wrote:
Thanks for the reply and I have thought about that, but I'd rather not if I don't have to.... I have a working system as is, and recompiling in the background would not be a problem, but if I reinstall, I'm looking at down time until I can get the necessities reinstalled.... I'm sure it would go quick and all but down time is still down time. I read somewhere about using -march=nocona as an in between so I guess I'm gonna try that. Worst case scenario I have to reinstall anyway...


For your concern, you should try -march=native instead.
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Kronykus
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PostPosted: Fri Jul 31, 2009 1:23 pm    Post subject: Reply with quote

-march=native will be after the new mb and proc are in place. -march=nocona will be for the transitional phase to ensure everything works with both procs during the transition, so I can go straight from the old setup to the new setup without hassle. I'll recompile the kernel as the final step before shutting down the system. After replacing the mb and proc, I'll (hopefully) be booting into the system with no troubles, at which time I'll commence to changing to -march=native, then the system can be rebuilding in the background and I'll still be able to work in the meantime.

EDIT: I think I'm just going to emerge -e system and then the basics of what I need instead of recompiling the whole world. I think probably emerge -e openoffice fluxbox will give me everything I need at bare minimum to continue working while recompiling to -march=native after the hardware swap.
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PostPosted: Fri Jul 31, 2009 2:43 pm    Post subject: Reply with quote

i'm still considering buying one in the future, when the price drops... i'm having enough problems with my atom as it is. :wink:
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PostPosted: Sun Aug 02, 2009 6:37 pm    Post subject: Reply with quote

Kronykus wrote:
Anybody still watching this thread?? I could use some advice. My i7 will be here today, and I'll be replacing my current mb/proc (amd 6400+ X2) with the i7 975 in an EVGA X58 Classified (759 limited edition). Any advice on kernel setup would be greatly appreciated. Also my current make.conf has -march=athlon64 will the i7 run with that? I'm thinking I should change to something generic (but what?), then recompile before making the swap then going to -march=native (unless someone has a better suggestion) after the swap. TIA


$1000+ for a i7 975 when a i7 920 $280 clocks to 4Ghz easily?
I run my i7 920 at 3.8Ghz 24/7 with 1.15vc and temps peak at
60c-65c with 100% load.
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PostPosted: Sun Aug 02, 2009 8:25 pm    Post subject: Reply with quote

Jupiter1TX wrote:
Kronykus wrote:
Anybody still watching this thread?? I could use some advice. My i7 will be here today, and I'll be replacing my current mb/proc (amd 6400+ X2) with the i7 975 in an EVGA X58 Classified (759 limited edition). Any advice on kernel setup would be greatly appreciated. Also my current make.conf has -march=athlon64 will the i7 run with that? I'm thinking I should change to something generic (but what?), then recompile before making the swap then going to -march=native (unless someone has a better suggestion) after the swap. TIA


$1000+ for a i7 975 when a i7 920 $280 clocks to 4Ghz easily?
I run my i7 920 at 3.8Ghz 24/7 with 1.15vc and temps peak at
60c-65c with 100% load.


compare more than the base Ghz

and not to be rude but last time I checked it was my $1000 to do with as I please.....
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PostPosted: Wed Aug 12, 2009 1:19 pm    Post subject: Reply with quote

I got one :-)

An i7 920, Asus P6T SE motherboard, 6 GB RAM.

Just installed Debian stable on it without any problems, Gentoo will be next.

-peter
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