gmane.linux.ubuntu.devel.ubuntu-studio

Re: Improving OOTB performance

Len Ovens — 2012-05-24T21:24:51

On Tue, May 22, 2012 12:31 am, óÅÒÇÅÊ äÁ×ÙÄÏ× wrote:
...

I'll get there. I tried ulatency on another machine (newer) and it is ok.
Once I figure out if it will help in this situation... and how to set it
up, I'll go back to the original machine and try again.


Yes, they say "memory specific" :-)  I realize I will have to set up
rules, They have three defaults there, none of which are what we need for
audio.

In the mean time... I have been experimenting with both swappiness set to
zero and swapoff. It has been a good experience:

 Rule 1) never run unnecessary software. My test setup had swappiness 0
and jackd running silence to outputs with qjackctl to monitor for xruns
etc. I left it this way overnight (8 to 10 hours) and things seemed ok.
at the 8 hour mark there were a pile of xruns and at the 9hour or so. I
found that swap was about 50% full or so.

So I thought I would try the same thing with swap off.  I ran it over
night too, but it did not make it even to 7 hours. I found it at the l

LiveFS ubuntustudio-dvd/quantal/i386 failed to build on 20120523

CD Image — 2012-05-23T18:20:15

[2012-05-23 18:17:04] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-23 18:17:04] lb_clean noauto --purge
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[2012-05-23 18:17:04] lb_clean noauto --all
P: Cleaning chroot
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[2012-05-23 18:17:13] lb_clean noauto --cache
[2012-05-23 18:17:17] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-23 18:17:17] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency-pae --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-23 18:17:17] lb_build 
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[2012-05-23 18:17:17] lb_bootstr

LiveFS ubuntustudio-dvd/quantal/amd64 failed to build on 20120523

CD Image — 2012-05-23T18:19:56

[2012-05-23 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-23 18:17:03] lb_clean noauto --purge
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[2012-05-23 18:17:03] lb_clean noauto --all
P: Cleaning chroot
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[2012-05-23 18:17:09] lb_clean noauto --cache
[2012-05-23 18:17:11] lb_config 
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[2012-05-23 18:17:11] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-23 18:17:12] lb_build 
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[2012-05-23 18:17:12] lb_bootstrap

LiveFS ubuntustudio-dvd/quantal/amd64 failed to build on 20120522

CD Image — 2012-05-22T18:19:46

[2012-05-22 18:17:06] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-22 18:17:06] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-22 18:17:06] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-22 18:17:07] lb_clean noauto --cache
[2012-05-22 18:17:07] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-22 18:17:07] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-22 18:17:07] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-22 18:17:07] lb_bootstrap

LiveFS ubuntustudio-dvd/quantal/amd64 failed to build on 20120521

CD Image — 2012-05-21T18:19:51

[2012-05-21 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-21 18:17:03] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-21 18:17:03] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-21 18:17:05] lb_clean noauto --cache
[2012-05-21 18:17:07] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-21 18:17:07] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-21 18:17:07] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-21 18:17:07] lb_bootstrap

LiveFS ubuntustudio-dvd/quantal/amd64 failed to build on 20120520

CD Image — 2012-05-20T18:19:45

[2012-05-20 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-20 18:17:03] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-20 18:17:03] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-20 18:17:05] lb_clean noauto --cache
[2012-05-20 18:17:05] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-20 18:17:05] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-20 18:17:05] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-20 18:17:06] lb_bootstrap

LiveFS ubuntustudio-dvd/quantal/i386 failed to build on 20120522

CD Image — 2012-05-22T18:20:03

[2012-05-22 18:17:07] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-22 18:17:07] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-22 18:17:07] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-22 18:17:07] lb_clean noauto --cache
[2012-05-22 18:17:07] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-22 18:17:07] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency-pae --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-22 18:17:07] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-22 18:17:08] lb_bootstr

LiveFS ubuntustudio-dvd/quantal/i386 failed to build on 20120521

CD Image — 2012-05-21T18:20:13

[2012-05-21 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-21 18:17:03] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-21 18:17:03] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-21 18:17:12] lb_clean noauto --cache
[2012-05-21 18:17:16] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-21 18:17:16] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency-pae --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-21 18:17:16] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-21 18:17:16] lb_bootstr

LiveFS ubuntustudio-dvd/quantal/i386 failed to build on 20120520

CD Image — 2012-05-20T18:20:21

[2012-05-20 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-20 18:17:03] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-20 18:17:03] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-20 18:17:17] lb_clean noauto --cache
[2012-05-20 18:17:21] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-20 18:17:21] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency-pae --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-20 18:17:21] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-20 18:17:22] lb_bootstr

LiveFS ubuntustudio-dvd/quantal/amd64 failed to build on 20120519

CD Image — 2012-05-19T18:19:45

[2012-05-19 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-19 18:17:03] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-19 18:17:03] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-19 18:17:05] lb_clean noauto --cache
[2012-05-19 18:17:05] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-19 18:17:05] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-19 18:17:05] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-19 18:17:05] lb_bootstrap

LiveFS ubuntustudio-dvd/quantal/i386 failed to build on 20120519

CD Image — 2012-05-19T18:20:09

[2012-05-19 18:17:04] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-19 18:17:04] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-19 18:17:04] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-19 18:17:10] lb_clean noauto --cache
[2012-05-19 18:17:13] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-19 18:17:13] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency-pae --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-19 18:17:13] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-19 18:17:13] lb_bootstr

Re: Improving OOTB performance

Len Ovens — 2012-05-22T22:40:37

On Tue, May 22, 2012 12:31 am, óÅÒÇÅÊ äÁ×ÙÄÏ× wrote:


I'm thinking my main problem is a memory leak, perhaps in the screen
saver. I will have to set up a timer to take memory used snapshots over
time.

Re: Improving OOTB performance

Сергей Давыдов — 2012-05-22T07:31:48

Whoa, sounds like a bug. Please report at
https://github.com/poelzi/ulatencyd/issues

Also, Debian package has memory and swap management disabled by
default, it's done via Debian-specific patch. Try enabling that and
see if it works. Also, I don't think it has any rules for qjackctl
OOTB, so you probably won't notice any difference.

--
Sergey "Shnatsel" Davidoff

Re: Improving OOTB performance

Len Ovens — 2012-05-22T01:10:50

On Mon, May 21, 2012 11:48 am, óÅÒÇÅÊ äÁ×ÙÄÏ× wrote:

Yikes!! ulatencyd takes effect as soon as installed. Start qjackctl ok,
hit the start button on qjackctl... takes a long time do anything, lots of
error messages and the a fial box comes up.... but, I find my keyboard and
mouse are non-resposive. The computer on/off switch still brings up the
logoff/reboot/halt dialog though. Hard reset. Remove ulatencyd... all ok.

There is probably some setup needed somewhere. On the other hand,
swappiness 0, just works.

Re: Improving OOTB performance

Len Ovens — 2012-05-21T23:55:07

On Mon, May 21, 2012 11:48 am, óÅÒÇÅÊ äÁ×ÙÄÏ× wrote:

Yup, I see it.

Our config looks like:
CONFIG_CGROUP_MEM_RES_CTLR=y
CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y
CONFIG_CGROUP_MEM_RES_CTLR_SWAP_ENABLED=y

So it sounds like it should work.

Re: Improving OOTB performance

Сергей Давыдов — 2012-05-21T18:48:01

Len,

Latest release of ulatencyd is available in Debian and Ubuntu repos.
I've written some configs for desktop use case which were accepted
upstream, but I guess you're not interested in them, so there's
nothing really new for you in trunk compared to latest release.

However, CONFIG_CGROUP_MEM_RES_CTLR is disabled by default on Debian
kernels, I'm not sure if it's enabled on Ubuntu kernels and if it
affects CONFIG_CGROUP_MEM_RES_CTLR_SWAP, but you'd better check
-lowlatency kernel configs and/or kernel parameter documentation if
you're going to control swap with ulatencyd.

For now I came back just to say thanks for pointing me towards Maemo
tools. I've been using Maemo as my primary phone OS for over a year
now and I love it! Now I love its devs even more! :D

--
Sergey "Shnatsel" Davidoff

Re: Improving OOTB performance

Len Ovens — 2012-05-21T15:31:37

On Fri, May 18, 2012 3:41 pm, óÅÒÇÅÊ äÁ×ÙÄÏ× wrote:

Ok, Ulatency is going to be one of my next tests. Do you have a link other
than the github for downloading from? That is can I download/install a
package?

With regards to swap... I have been doing a little test that seems to be
showing a swap problem. I am running the system very lightly loaded. XFCE
session, but:
 - Swappiness = 10
 - CRON and friends turned off
 - ath9k unloaded (for a known problem with my H/W)
 - CPU throttling set to performance (full speed)
 - Jackdbus running at -p 128 (lowest this H/W supports)
 - pulse-jack bridging turned off (pulse is still running)
 - screen saver runs as required, I only mention this because stock Ubuntu
Studio is set to blank.

Anyway, The first 8 hours there were no xruns at all. I was very happy. I
had been checking off and on and so the screen saver was also off and on.
However, right about this time a pile of xruns show up all at once... Not
while I am watching but I notice an hour or so la

Updates to ubuntustudio-legacy themes for precise

Luke Kuhn — 2012-05-15T21:23:27

The Ubuntustudio-legacy GTK theme I ported to GTK3 required a number of updates to work with the version of GTK3 used in Precise. I have attached the "ubuntustudio-legacy-precise" theme along with my "ubuntustudio-legacy" icons, both of which I am using right now in the Quantal version of the install that began life as Ubuntustudio-Jaunty in my machines. Was a LOT of work to get them working, but worth it as I generally want to keep the same appearance through all updates.

If these are added to a future version of Ubuntustudio, I should be able to mantain them as long as no change comes along in GTK3 that I can't make sense of or that introduces an intolerable bug, as I use them every day and run the alpha versions of ubuntu. It would help if people would check them over closely for bugs in other machines and circumstances, of course, and post any patches for any problems they discover.

For use in the ubuntustudio distro, there are two personal changes that you all would probably want to revert: One is a

LiveFS ubuntustudio-dvd/quantal/amd64 failed to build on 20120516

CD Image — 2012-05-16T18:19:51

[2012-05-16 18:17:03] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-16 18:17:03] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-16 18:17:03] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-16 18:17:05] lb_clean noauto --cache
[2012-05-16 18:17:06] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-16 18:17:06] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-16 18:17:06] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-16 18:17:06] lb_bootstrap

LiveFS ubuntustudio-dvd/quantal/i386 failed to build on 20120516

CD Image — 2012-05-16T18:20:21

[2012-05-16 18:17:04] lb_clean --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-16 18:17:04] lb_clean noauto --purge
[1;37mP[0m: Executing auto/clean script.
[2012-05-16 18:17:04] lb_clean noauto --all
P: Cleaning chroot
[1;37mP[0m: Executing auto/clean script.
[2012-05-16 18:17:17] lb_clean noauto --cache
[2012-05-16 18:17:21] lb_config 
[1;37mP[0m: Executing auto/config script.
[2012-05-16 18:17:21] lb_config noauto --mode ubuntu --distribution quantal --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-mirror-bootstrap http://ftpmaster.internal/ubuntu/ --parent-archive-areas main restricted universe multiverse --package-lists none --linux-flavours lowlatency-pae --initsystem none --bootloader none --initramfs-compression lzma
[1;37mP[0m: Considering defaults defined in /etc/live/build.conf
P: Updating config tree
[2012-05-16 18:17:21] lb_build 
[1;37mP[0m: Executing auto/build script.
[2012-05-16 18:17:21] lb_bootstr

Re: Improving OOTB performance

Eero Tamminen — 2012-05-18T22:23:19

Hi,

(warning: long mail, better to browse to end before answering.)

On lauantai 19 toukokuu 2012, Len Ovens wrote:

According to what?

Of the "top" output:
----
Tasks: 173 total,   1 running, 171 sleeping,   1 stopped,   0 zombie
Cpu(s):  0.7%us,  0.2%sy,  0.0%ni, 99.2%id,  0.0%wa,  0.0%hi,  0.0%si,  
----

You should be checking the load by checking how much your system
is idle from the "id" number in top output.

Otherwise one can accidentally e.g. ignore io-wait from the "wa" number.

(Space refreshes the top output if its default refresh interval is 
too slow.)



If your system doesn't have IO-waits and it's still slow, low
CPU speed is very suspicious.

Maybe kernel thinks zram swapping is IO and doesn't keep the HZ high
despite it actually using CPU?

Have you tried setting the CPU frequency scaling governor to "performance"
to see what effect that has on performance?

And how you're measuring CPU frequency?  CPU governor can be changing
the CPU frequency at very high frequency (several times a sec