Why does Firefox performance slow down after starting Jack server?

Hello,
I started configuring my audio on my system. So, I want to have jack working (not jack2, to work with wineasio) with best sound quality with all sound routed through jack. When i start jack server with this command and settings:
killall jackd;killall pulseaudio;jackd -R -t 1000 -d alsa -P hw:0,0 -r 48000 -n2 -D
Firefox slows down, opens new pages slow and the scroll down is very very slow. I had this issue with other distros too. I suspect that it has to do with realtime ( which i need for my audio related apps like traktor through wine, ardour, ableton through wine etc) without being sure about it. Any idea why this is happening?

zabrielza wrote:I had this issue with other distros too.
This smells like hardware problem. Do this:
1. Kill pulseaudio, jack, and make sure they are killed
2. Make sure you do not renice anything or apply other such tweaks
3. Run jackd -d alsa
4. Use your system
5. If unsatisfactory, try jackd -d alsa -p 1024 -n 3
6. Use your system
Jack runs with realtime priority by default (no flag required), and we still use the audio group to provide that privilege. I also do not advocate the realtime kernel, but you may try it. Jack not functioning well (i.e. hampering other tasks significantly) on a standard kernel is cause for concern.
You can read/grep your dmesg and systemd journal for suspicious messages. You may try running real-time audio tasks in another operating system with your hardware, and upon success may proceed to debug the problem on Linux, possibly with the help of the alsa developers.
Or better yet, grab a supported semi-pro external audio device if jack is important for you. However, this may not help if the problem is somewhere deeper, e.g. at the hardware interrupt level.
Last edited by schivmeister (2015-04-30 18:21:56)

Similar Messages

Why does the screenline shut down after about 2 clips? the tutorial worked fine.

Why does the screenline shut down after about 2 clips? the tutorial worked fine.

I don't know about MOD files, since I don't use them
>As a beginner
LOTS of learning information in these links
Online User Guide http://help.adobe.com/en_US/premiereelements/using/index.html
-Page to download current PDF http://helpx.adobe.com/premiere-elements.html
Importing Video http://forums.adobe.com/thread/1065281
-and project settings http://forums.adobe.com/thread/1112086
Saving & Sharing http://forums.adobe.com/thread/1137128
-Sharing to DVD or BluRay http://forums.adobe.com/thread/1137645
-Sharing for Movies http://forums.adobe.com/thread/1051093
-Sharing for Computer http://forums.adobe.com/thread/1058237
Steve's Basic Training Tutorials... steps are the same for several versions
-http://forums.adobe.com/thread/537685
-v11 http://www.amazon.com/Muvipix-Guide-Premiere-Elements-version/dp/1479311200/
-All http://www.amazon.com/Tricks-Adobe-Premiere-Elements-Muvipix-com/dp/1451529724/
-and http://forums.adobe.com/thread/498626
-and http://prodesigntools.com/four-hours-free-video-tutorials-new-photoshop-elements-9-pse9.ht ml
-and http://prodesigntools.com/five-hours-free-tutorials-photoshop-and-premiere-elements-7-and- 8.html
FAQ http://forums.adobe.com/community/premiere_elements/premiere_elements_faq
TIPS http://forums.adobe.com/community/premiere_elements/premiere_elements_tips
Another help site http://muvipix.com/ or http://muvipix.com/phpBB3/

Why does Photoshop keep slowing down?

I've been using Adobe Photoshop CS5.1 for two years now, and for some reason it seems to have the problem of slowing down after using it for a while, so if I'm working on a project I have to keep closing it and reopening it to get it fast again. It's weird because it doesn't seem to matter how much stuff is on the canvas, it's just how much I've drawn and hit undo and erased or did anything, After like 5 minutes of straight work it just gets too slow for me to work in, like when I switch tools or change the color it takes a couple seconds to respond. So literally every couple minutes I have to restart Photoshop and open the same file.
What's really odd is that sometimes Photoshop will work perfectly fine and stay lightning fast for hours. Like, for the last couple of months it's been 100% fine, but since a few days ago it started to have this "slowing down" issue again. Every couple months it seems to decide to be perfectly fine or just really annoying. I didn't change anything in my computer.
It can't be my computers specs or my settings in Photoshop, but I will tell you all of that anyway.
OS - Windows 7 64-bit
CPU - Intel Core 2 Quad Q6600 @ 3.0GHz
RAM - 12GB DDR3 @ 1333MHz

There is no malware scanner running, in fact I have tried closing out all other applications and unnecessary processes to help improve performance. No luck.
Also, my post actually wasn't quite finished, but my internet shut off on me last night and I guess that just automatically posted whatever I had done before then. What's even better is that the forums won't allow me to edit it. What great features!
Anyway, here's the FULL spec sheet of my computer...
OS - Windows 7 64-bit
CPU - Intel Core 2 Quad Q6600 @ 3.0GHz
RAM - 12GB DDR3 @ 1333MHz
GPU - NVIDIA GeForce GTS 450 1GB
Storage - 1x 128GB SSD (OS installed on), 1x 750GB HDD, 1x 160GB HDD
I have the 64-bit version of Photoshop CS5.1 Extended, installed on the SSD. Here's the settings I have in the preferences:
Memory Usage - 100%
Scratch Disks - All 3, SSD 1st, 750GB HDD 2nd, 160GB HDD 3rd
History States - 100
Cache Levels - 8
Cache Tile Size - 1028K
I have fiddled with these settings and restarted Photoshop countless times. In the end it's the same exact result: Photoshop slows down after a few minutes of work and I have to restart it. I have about 50GB free on the SSD, 150GB free on the 750GB, and about 140GB free on the 160GB.
I don't understand why it gets so slow even when my RAM usage only makes it up to about 45%. Why doesn't it just utilize ALL of the memory like I told it to?
I've tried setting cache to 1, 2, and 4, same result. Cache tile size to all the different settings, same result. History states to an extremely low level like 10, same result. I just don't understand why Photoshop is doing this, especially because it decides to speed up on its own every couple of months...

Why do my loops slow down after many iterations

My Vi seems to freeze up or slow down after several iterations of the loop. This is an Analog Input Capture VI.
Attachments:
Final_Main_VI_with_working_amp.vi ‏456 KB

First of all, thank you for your contribution. You are right to say that I have no need in changing the AI Config every time that the loop runs. But as this is supposed to be a soft-scope, I need to be able to update the parameters associated with AI Start while the loop is running (e.g. trigger level).
I have tried to move the AI Config subVI out of both loops but the error as a result is: "No transfer in progress for the specified source."
I also need a sampling rate of exactly 96kHz. I realize that the laptop clock cannot attain this value. Do you know how I could get exactly 96kHz.
Attachments:
Final_Main_VI_with_working_amp.vi ‏498 KB

My computer system slows down after starting firefox 3.6.6, how do I revert to 3.5 version?

My computer system slows down noticeably after starting Firefox 3.6.6, so I would like to shift back to the 3.5 version. What website in the Internet do I go to get the installer file?
== This happened ==
Every time Firefox opened

Your plugins list shows outdated plugin(s) with known security and stability risks.
# Shockwave Flash 10.0 r45
Update the [[Flash]] plugin to the latest version.
See http://www.adobe.com/software/flash/about/
You can try if it works if you disable OOPP (Out-Of-Process-Plugins).
See http://kb.mozillazine.org/Plugin-container_and_out-of-process_plugins
You can set the prefs dom.ipc.plugins.enabled.* to false on the about:config page to disable the plugin-container process.
dom.ipc.plugins.enabled (currently false by default)
dom.ipc.plugins.enabled.npswf32.dll (Flash)
dom.ipc.plugins.enabled.npctrl.dll (Silverlight)
dom.ipc.plugins.enabled.npqtplugin.dll (QuickTime)
To open the ''about:config'' page, type '''about:config''' in the location (address) bar and press the Enter key, just like you type the url of a website to open a website.
If you see a warning then you can confirm that you want to access that page.
Create a new profile as a test to check if your current profile is causing the problems
See [[Basic Troubleshooting|#Make_a_new_profile|Basic Troubleshooting: Make a new profile]]
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins"
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
You can find Firefox 3.5.10 here: http://www.mozilla.com/en-US/firefox/all-older.html

Why does my footage Slow down and loose audio when imported to after effects cs6?

Whenever I import video of any kind into after effects, it slows down and looses audio. It happens for every video. The weird thing is, it seems like it doesnt happen to anyone else on the internet. CAN SOMEONE PLEASE HELP ME PLEASE!!!! I am about to cry. I cant do anything with this stupid software! If there is a solution please tell me. Its really annoying.
extra info-
On Mac
mov. Files
H.264 codec

Slows down when? When you preview? Do you know how to preview?
If you are pressing the space bar to preview the video then the behavior you are seeing is normal. AE will not playback in real time with autio unless you do a ram preview (look it up). You must learn to use the software.
Start with the three videos on this page: Basic Workflow
Or check out these resources: AE Basics

Why does my MBP slow down throughout the day?

If I reboot my MBP it will run very fast, nice and zippy. But as the hours go on it seems to slow down to a crawl. I am noticing this in particualr in PS where I can run a program called Portraiture (for example) that will run almost instantly after a reboot and then hours later will take as much as 25 or 30 seconds to run.
The only thing that I have noticed is it does seem to correspond (possibly) with an external hard drive I attach to it frequently. I did this morning again and noticed it starting to slow shortly after. Ejecting the disk and unplugging it doesn't help, but ejecting it, unplugging and rebooting does help. (Though I don't kow if it is just the reboot that is helping and not neccesarily the disk) This ext HD is one that was used with my PC and is now being used to transfer files from the old PC to the new Mac. Could this be the problem? Have you ever heard of this being an issue?
I just used a tool called the band aid tool- this is something that is used for retouching. When using this tool it is typically instant but just now it took about 45 seconds for it to do it's job. I looked at the activity monitor and it was showing only 2% memory usage at the time.
This seems a bit odd to me.
MBP, Lion, 2.3GHZ, 8GB RAM.

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Appearance/Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
* Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

Why does my Macbook slow down every 4-5 seconds?

I am a big gamer nerd, and recently i have been moving over from x-box to computer.
I have recently noticed when i am playing high graphics games, or any game that takes a good amount of graphics, my computer seems to slow down alot every few seconds.
For Minecraft, i can play it on all the best settings and it will run perfectly fine for 3 seconds, then i get about 8 fps for one second and it repeats. It gets really annoying especially when it is in an intense moment, (or when it makes me fall into lava) This also becomes a big concern on games like Left 4 Dead, it makes these games (that my computer CLAIMS it can handle perfectly) almost unplayable.
This seems to become more apparent as my computer heats up.
Why does my computer do this? and Is there a way to make it stop?

Good that "big gamer nerds" are starting to use the Mac. Not long ago, there were hardly any good games around. Going backwards, yes, it's going to make the MBP run hotter. It's using the max amount of everything running.
To really help you, we would need the exact model of MBP. For example, if you have 15 or 17", you need to make sure you're running with the discrete video card (nvidia or AMD) instead of the integrated Intel version (which is good enough for TV viewing and web browsing). Also, you need to make sure you maximize memory. When I play a game (I only play Starcraft), I shut down all other programs, especially anything that runs in the background (like a twitter feed, though that really doesn't use too many resources). You can use Activity Monitor (it's in your Utility folder) to see what's sucking resources on your computer.
Remember, the game companies want to sell as many games as possible. So they give computer spects that will just barely run the game if you tweak every setting. You want to be way over the minimum settings in processor speed, memory, disk space etc.
Minecraft has known framerate issues on the Mac port of the game. It has nothing to do with you, your Mac, or anything, but the quality of code from the developer.

JVM performance slowed down after

Hello all,
My java application is heavily multithreaded and its supposed to run as a 24/7 service. Its supposed to collect SMS from different servers, store in memory/flat-files and send them to clients.
The application has been running for the past 6 days and
the JVM has slowed down considerably. (performance has gone down)
Initially the app used to receive/send arnd 50 SMS per second and now it process aroubd 20-25 SMS per second.
I've been using Your kit profiler to profile my app.
The maximum heap I allocated was 500MB; the alloted Heap shown in the
profiler is 95MB and the used Heap is 65MB
The CPU usage looks fairly stable,i.e. it does go up when SMS comes in
and i/o operations takes place and goes to 0% when no process is being done.
memory usage also looks fairly stable.
(No explicit memory leaks)
The application has over 133 threads and that stays the same as per
the profiler tool kit.
Also in my application I have a maintainance phase at 23:00 hours during which i do some cleaning work like
-deleting of expired SMS from memory
-deleting old log files
-deleteing other flat files
-and finally I explicitly call the garbage collector
What should I look in - to maintain the performance, should I not explicitly call
the GC and let JVM do it on its own? or is it beacause the heap space has become fragmented? - I do make a lots of read/writes from/to the objects stored in Heap.
I also make around 160,000+ read/write from/to flat files in the hard disk.
Could this cause the JVM to slow down?
Any suggestion on this will be great.

Initially the app used to receive/send arnd 50 SMS
per second and now it process aroubd 20-25 SMS per
second.
I've been using Your kit profiler to profile myapp.
Does it have CPU profiling? If yes, then you can look
at where the time's being spent when processing a
message.
It does have a CPU profiling graph, but there is nothing much i can infer from it, I can see the graph peaking to 60-80% CPU usage when SMS are comming in (i.e. SMS is received, stored in memory & a copy is also put in the flat file - which is a read/write I/O operation, so I would defenitely expect the CPU to peak up); this peaking up would normally happen between 6-9am when lots of SMS come it to my app. The rest of the time (in the afternoon & evening) CPU is 0% ; so I can defenitely rule ot memory leak right?
its difficult to find out the time taken to process every message; the rough estimate I got from the log file is 50SMS / Sec. i.e. 50SMS receievd via TCP/IP; then store it in flat file & memory and also deliver it across to a client via socket; get a response back; change some status in memory and also in the flat file; this count of 50 has defenitely dropped to 25-30 in 6 days.
>
The maximum heap I allocated was 500MB; thealloted
Heap shown in the profiler is 95MB and the usedHeap is 65MB
So not a memory problem.
The CPU usage looks fairly stable,i.e. it does goup
when SMS comes in and i/o operations takes place
and goes to 0% when no process is being done.So not a background thread that's run amok
(probably).
The application has over 133 threads and thatstays
the same as per the profiler tool kit.You could be running into contention for a shared
resource. This will show up in the CPU profiler, or
you can get a "quick and dirty" report by hitting
Ctrl-\ in the window where the JVM is running (or, if
on Unix, sending SIGQUIT to the JVM process). This
will send a thread dump to the console. Look for a
lot of threads "wait"ing on some object, then look
for the thread that holds that object.
You are talking of possible dead-locks right? thats something i@ve go to llok into; the profiler does lists ot a list of possible thread-deadlocks. but all of them are purposefully made into TIMED_WAITING ; would that cause the performance to drop?
>
What should I look in - to maintain theperformance,
should I not explicitly call the GC and let JVM doit on its own?
Never call GC directly. The JVM will do it when
necessary. Plus, you don't appear to have a memory
issue.
Yep, would change that and avoid calling GC directly.
>
I also make around 160,000+ read/write from/toflat
files in the hard disk. Could this cause the JVM toslow down?
Ahh ... flat files in a single directory? A lot of
files in one directory will definitely slow things
down, especially if you're opening them for every
read and write: the OS has to scan the entire
directory to find the file.Nothing much I can do there.
>
Does performance improve after your nightly cleanup?
If yes, and you're removing old files, then this is
an indication of the problem.I'll look into the logs to see if there is any increase in performance after GC and clome back

Why does project save slow down over duration of project life?

I notice when I'm editing in a project in Premiere Pro CC, the auto save or even if I just save, the save slows down over time. You can slowly see the save bar going slower and slower over time. Even if I don't add any new media or import different files the save still goes a lot slower overtime. Sometimes the save bar will hang at a certain point for 20 secs or so and then continue. I understand if I add more media, files, pics, music etc... the save will take longer. But why does it do this if I'm just editing with some effects? Is it something to do with the cache folder getting too large or that I have too many auto saves? Should I clean out these folders? Also if it hangs at one spot for 10 secs or so is it because there is a corrupt file somewhere?
I just find this very frustrating if you are saving every 5 mins and you have to wait for 30 secs for a save.
My specs: Mac Pro 2009
Processor 2 x 2.26 GHz Quad-Core Intel Xeon
Memory 32 GB 1066 MHz DDR3 ECC
Graphics NVIDIA GeForce GTX 680 2048 MB
Startup disk SSD

I can answer some parts:
The auto save works as a five project silo. Once the list gets to 5 saves, it starts to write over. Also the auto-save only saves the project--no assets, no renders, thus the file is relatively small.
applying aneffect (filters transitions, etc) causes the program to create a new file as Premiere does not modfy the original asset. The more effects that are used, the more files that are created. When you finally export, the AME creates a single file, once again, not affecting the original assets.

Why does my animation slow down in safari?

i've created an animation at 75 fps. when i open the .swf
file with safari the animation is slowed down. why is this?
also, Explorer can't even open the file. i suppose i need a
flash player for Explorer. I should probably also upgrade from 5.2,
huh? hahahaha

And yet I have built an entire career on animation with
flash. I will admit, being a toon boom user,
the difference is huge - TBS has a lot more desireable
features - but flash is flash - it is pretty
convenient that the entire world browsing the internet has
the flash player - and flash does have
one of the most intuitive timelines ever. TBS is still in the
dark ages with exposure sheet style
animation - it's traditional and that's fine, but serves very
little purpose in regards to
computer-based animation.
The general statement that flash is not an animation tool is
like saying that a ferrari is not for
driving.
mho
GerryIsHere wrote:
> Flash is definitely not an "animation" tool.
~~~~~~~~~~~~~~~~
--> Adobe Certified Expert
--> www.mudbubble.com
--> www.keyframer.com
~~~~~~~~~~~~~~~~

Why does my application slow down?

Hi,
I'm designing a LabVIEW PDA application which has to receive, display and save data. One data is received every 30ms through Bluetooth (the other side is a microcontroller). My problem is that after about 5 secondes the LabVIEW application slows down and my system is not real-time any more. Is it because of the shift registers? I don't have a lot of knowledges in LabVIEW and I hope somebody will be able to guide me toward a solution.
Thanks in advance
Message Edited by roberto.venetz on 02-22-2007 02:23 PM
Attachments:
LDF_LabV_main.jpg ‏1216 KB

Your image is not good enought to really see what's going on, but nothing seems very efficient from what I recognize.
You don't need the flat 4 frame sequence structure at all. Simply delete the read globals in the fourth frame and use a wire from the value a few frames over. Now execution order is fully determined by dataflow. Delete the sequence.
What's all that song and dance to get a DBL from a string? (looks like "string to byte array...split string...combine...delete from array(?!)...to DBL") I think all you need is a "typecast" and a "to DBL". (I've see that before but it is very hard to comprehend why people use "delete from array" and then only use the "deleted portion" output to get a subset. What's wrong with "index array" or "array subset"????)
You are growing four arrays without bounds, this is very expensive. Do you have any idea how long the arrays will get in the worst case scenario?
you are reading the dt global four times with each iteration. I doubt it will ever change during the loop, so read it once outside the loop and wire it to all users.
Why are you constantly building new waveforms? You might as well just graph the arry direclty and set x0 and dx once with a property node before the loop.
What determines the loop rate?
Why are you bundling the four arrays into a cluster at the end? Keep the datatype simple! For example you could use a single 2D array.
What is going on in the other frames of the big sequence?
Why on'y ou attach your program, it would be easer to inspect.
LabVIEW Champion . Do more with less code and in less time .

Why does Airport Express slow down my wireless network??

Hello, guys! Here I am again, seeking for help...
Ok, so here's the situation: my internet service provides me with 10Mbps. My cable modem is hooked up to a 4-month old Airport Extreme in my home office, two walls away from the living room, where I'm typing from now. Internet's wireless speed in this living room has always been about 10Mbps, barely any loss when switching my signal from cable to wireless.
I then decided to buy an Airport Express in order to extend my wireless network, since I want to work in a room far from this living room and with Airport Extreme alone I got no internet signal there.
Ok, so I installed the Express right at the living room (I can say it's pretty much at the middle of the house) and now I got full internet sign at the far room, great!
HOWEVER, my wireles speed has been cut by half!! At this very same living room where the signal was 10Mbps before I installed the Aiport Express, it's now - at the very best!- 5Mbps!! Needless to say that it's even slower at the far room it was intendend to extend the signal to, but that was kind of expected.
*But why does it cut in half my internet speed at the living room if Airpot Extreme IS delivering 10Mbps at that point of the house??* Am I not setting it up properly, how can I solve this??
Thank you so much for any help you can give me!
Cheers,
Renata
Message was edited by: rgobrasil

After some more analysis, I discovered that this tends to happen everytime a Time Capsule backup is performed.....

Why Does My Mouse Slow Down?

Lifetime Windows user recently switched to Mac. I plugged in a USB mouse and as I get close to whatever I am looking to click on and naturally slow down, the cursor slows down exponentially. I read something about this being how macs are, but want to verify that and see what can be done about turning that off if it is the case. It is just awful in my opinion.

Trey B wrote:
So you can minimize LabVIEW 8.5 and the speed returns to normal? What operating system are you using?
Yes, if I minimize LabVIEW (or switch to another program), my mouse speed returns to normal. I'm running Windows XP w/ SP2, and using a Logitech Trackman Wheel.
Marc A wrote:
I noticed this once with Google Earth. Turns out my mouse drivers were set to disable acceleration in games. This slowed the mouse down when Google Earth was in focus. I'm not sure if any drivers treat LabVIEW as a game, but it's worth a look.
Your fix worked for me. I turned off the "Disable Acceleration in Games" setting and it worked great. I don't program at home, so it's not an issue for me, but I imagine this could be an annoyance for anybody out there that also does any gaming. Just an idea for NI.

Why is Firefox 4 slowing down my whole Mac? I am not the only one.

My whole Mac Book Pro (five years old running Snow Leopard 10.6.7) has been slowed down. I know someone with a 3 month old Mac Book Pro that is having the same problem. Every aspect of my computer slows down so badly when Firefox is open. I saved a copy of Firefox 3.6.16 just in case thank goodness. I am using it now without a problem. I read you know about this at a Mac Chat Site, and are working on a fix. But I read nothing about it here.

I'm posting another screen shot. This browser is eating up memory like crazy. I have 5 tabs open when this happened. If I try to use another App, it is really slowed down too.

Why does Firefox performance slow down after starting Jack server?

Similar Messages

Maybe you are looking for