Difference between revisions of "Talk:Maximizing performance"

From ArchWiki
Jump to: navigation, search
(Intel Sandybridge and higher CPU governors: close)
 
(16 intermediate revisions by 5 users not shown)
Line 1: Line 1:
------
+
== Question About go-preload Section ==
This doesn't work:
+
mkfs.xfs -l internal,lazy-count=1 size=128m -d agcount=2 /dev/sdxx
+
--[[User:Jkd.luca|Jkd.luca]] 17:21, 4 October 2010 (EDT)
+
  
 +
Would it be worth mentioning the use of su in the gopreload section? I'm not sure how gopreload works, but for example running 'gopreload-enable xfce4-panel' loads a totally vanilla Xfce panel without any content, surely this wouldn't allow the preloading as many relevant files? Running 'gopreload-prepare su <user> -c xfce4-panel' on the other hand will run your user-configured panel therefore many more relevant files. Again I'm not sure if this is how the command works so I wanted to ask here first. -- [[User:Manypopes|Henry Gibson]] ([[User talk:Manypopes|talk]]) 10:32, 12 March 2014 (UTC) ManyPopes
  
"''Things kinda slow? Buy more ram!''" is really not the kind of advice anyone is looking for. And the CPU section (undervolting, etc.) isn't related to speed improvements, except fan control. This section is sorely lacking a link/howto to/for BFS.<br>
+
:I think that you are more likely to get a definite answer at the [http://forums.gentoo.org/viewtopic-t-789818-view-next.html?sid=5457cff93039fc7d4a3e445ef90f9821 Gentoo forums], where the program was created. Well, perhaps not in the original thread, where the latest post is five years old... -- [[User:Lahwaacz|Lahwaacz]] ([[User talk:Lahwaacz|talk]]) 19:16, 12 March 2014 (UTC)
--[[User:Gog|Gog]] 20:36, 24 October 2009 (EDT)
+
  
:To my knowledge keeping the CPU cool does not improve performance so I removed this part. I also removed the introduction about RAM. So, problems solved ?
+
::Seeing as the creator of the script doesn't seem active I had a play around comparing the files generated by each command. It seems that when running as your user, most of the required files are already in RAM therefore don't get listed. Running as root however will load all the required libraries etc. therefore will list many more relevant files. I don't think there's any advantage to using the su <user> -c command after all. -- [[User:Manypopes|Henry Gibson]] ([[User talk:Manypopes|talk]]) 16:10, 22 March 2014 (UTC)
:[[User:Changaco|Changaco]] 11:25, 25 October 2009 (EDT)
+
  
::I'm not an expert, but doesn't overheating decrease performance? If it is, then preventing overheating should count as maximizing performance. If not, then the section is indeed irrelevant. I found this article saying it does for pentium 4 processors: http://www.xbitlabs.com/articles/cpu/display/p4-temp.html . But as I said I'm no expert, so what do you think?
+
== <s>Intel Sandybridge and higher CPU governors</s> ==
::--Rttommy
+
  
:::I'm not an expert either, maybe we should undo my change but edit in order not to present this as an absolute truth.
+
[https://unix.stackexchange.com/questions/121410/setting-cpu-governor-to-on-demand-or-conservative Long story]
:::[[User:Changaco|Changaco]] 14:13, 25 October 2009 (EDT)
+
  
:::I think that fan control should be left in since it's generally considered to be related with overclocking. And another thing: let's keep the article's title in tandem with the heading's cases... "Maximizing Performance" or "Maximizing '''p'''erformance"? the second one matches the headings...
+
===Short story===
:::--[[User:Gog|Gog]] 19:22, 25 October 2009 (EDT)
+
Sandybridge+ CPUs use specific Intel driver that has 2 governors: powersave (default) and performance. If you wish to use another governor, you need to disable this driver (more in the link above). [[User:Tharbad|Tharbad]] ([[User talk:Tharbad|talk]]) 20:36, 7 March 2016 (UTC)
  
:::I was wondering if we should create a script that get's the top CPU value of top and let the user choose to pause it or continue running so the system doesn't literally freeze up and become unusuable until a reboot is required, this happend to me so I was wondering if anyone else feels that this is necessary.
+
:That info belongs to [[CPU frequency scaling]] (perhaps it's already there). This page is missing a link to that page. -- [[User:Lahwaacz|Lahwaacz]] ([[User talk:Lahwaacz|talk]]) 11:34, 8 March 2016 (UTC)
:::--[[User:littlebear|littlebear]] 13:37, 6 February 2009 (EST)
+
:: You're right. I had both pages open in my browser... Anyway added a link to CPU scaling on the way. [[User:Tharbad|Tharbad]] ([[User talk:Tharbad|talk]]) 15:53, 8 March 2016 (UTC)
----
+
  
Section "The desktop switcheroo" does not make sense. [[User:Manolo|manolo]] 16:35, 7 November 2009 (EST)
+
:::Thanks, let's continue [[Talk:CPU_frequency_scaling#Intel Sandybridge and higher CPU governors|there]]. Closing. -- [[User:Lahwaacz|Lahwaacz]] ([[User talk:Lahwaacz|talk]]) 19:20, 8 March 2016 (UTC)
 
+
----
+
 
+
The section on btrfs talks about the libcrc32c module, but confusingly lists modules that don't seem related to btrfs.  I think the zlib module is necessary, but have not yet figured out which others are or are not. [[User:Nitmd|Nitmd]] 23:27, 14 May 2010 (EDT)
+
 
+
----
+
What is with the advice about glxgears framerates? "less than 300fps"... It syncs with the monitors vertical refresh rate, meaning it will only go ~60fps (or whatever your refresh rate is). [[User:PIMPinator|PIMPinator]] 11:29, 29 September 2010 (EDT)
+
 
+
 
+
----
+
I read about LZO compression and space_cache for btrfs lately: http://www.phoronix.com/scan.php?page=article&item=btrfs_space_cache
+
--[[User:Longint|Longint]] 18:53, 15 June 2011 (EDT)
+
 
+
----
+
Firefox profile guided optimization link is useless since firefox stock builds have it enabled.
+
There's no more a relative section in [[Firefox]] --[[User:Flu|Flu]] 13:46, 29 September 2011 (EDT)
+

Latest revision as of 19:20, 8 March 2016

Question About go-preload Section

Would it be worth mentioning the use of su in the gopreload section? I'm not sure how gopreload works, but for example running 'gopreload-enable xfce4-panel' loads a totally vanilla Xfce panel without any content, surely this wouldn't allow the preloading as many relevant files? Running 'gopreload-prepare su <user> -c xfce4-panel' on the other hand will run your user-configured panel therefore many more relevant files. Again I'm not sure if this is how the command works so I wanted to ask here first. -- Henry Gibson (talk) 10:32, 12 March 2014 (UTC) ManyPopes

I think that you are more likely to get a definite answer at the Gentoo forums, where the program was created. Well, perhaps not in the original thread, where the latest post is five years old... -- Lahwaacz (talk) 19:16, 12 March 2014 (UTC)
Seeing as the creator of the script doesn't seem active I had a play around comparing the files generated by each command. It seems that when running as your user, most of the required files are already in RAM therefore don't get listed. Running as root however will load all the required libraries etc. therefore will list many more relevant files. I don't think there's any advantage to using the su <user> -c command after all. -- Henry Gibson (talk) 16:10, 22 March 2014 (UTC)

Intel Sandybridge and higher CPU governors

Long story

Short story

Sandybridge+ CPUs use specific Intel driver that has 2 governors: powersave (default) and performance. If you wish to use another governor, you need to disable this driver (more in the link above). Tharbad (talk) 20:36, 7 March 2016 (UTC)

That info belongs to CPU frequency scaling (perhaps it's already there). This page is missing a link to that page. -- Lahwaacz (talk) 11:34, 8 March 2016 (UTC)
You're right. I had both pages open in my browser... Anyway added a link to CPU scaling on the way. Tharbad (talk) 15:53, 8 March 2016 (UTC)
Thanks, let's continue there. Closing. -- Lahwaacz (talk) 19:20, 8 March 2016 (UTC)