Why is firefox 7b using a lot more memory and cpu on my computer?
I'm trying firefox 7 beta in a debian squeeze box. It is using a lot of RAM and CPU compared to previous releases of firefox(I've tried disabling all plugins and add-ons, not a big improvement). In the follow link here is a summary from about:memory, websites tabs opened at that time and the usage of % mem and cpu of my system: http://pastebin.com/8ji1gmLk
I'm using firefox on all my computers for a while now. So changing the browser is not an option for me now.
It did crash few times when loading a lot of tabs. Please let me know if there is another information that would be useful for fixing this. Thanks
Is it using a significant amount more resources than 6.0 did?
I noticed 6.0 is a VAST resource hog over 5.0 and earlier. It's a very bad flaw in the new version, and has a lot of people upset.
What has me curious is whether this is a new resource problem or whether it was present in 6.0 and you are just not noticing it.
One suggestion: Don't run BETA versions of ANY software on "all your machines". Not when rolling back the version is not an option. That's generally a bad idea, since beta versions are likely to have bugs.
With FF, now, I would never let it automatically update. I don't trust their new update policies, so I would suggest you turn "auto updates" to OFF, and do it manually, only after you hear the new release is stable, which we know 6.0 is NOT.
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using Windows 7, firefox 15.0.1
This process uses more and more memory and CPU, sometimes there are several of these processes running. If I kill these processes, it doesn't seem to affect the utilization of Firefox. Then the process slowly starts to use more and more memory and CPU all over again.
This happens all the time, every time I use Firefox.I do not have a ComObjects folder under C:\Program Files (x86)\Common Files. That is not part of Firefox.
wscript.exe is a utility included with Windows to run scripts at the system level. It generally is not used by major programs. If update.exe is starting up with Windows, you may be able to find the script that wscript.exe is running using [http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx Autoruns].
It definitely sounds viral. I suggest deleting the update.exe file, although Windows might prevent you from doing that until you kill all related processes. And if you have a persistent infection, the file may be restored or re-downloaded.
It might be easiest to seek assistance from a forum more dedicated to malware cleanups such as the following:
* [http://www.bleepingcomputer.com/forums/forum22.html Virus, Trojan, Spyware, and Malware Removal Logs - BleepingComputer.com]
* [http://forums.majorgeeks.com/forumdisplay.php?f=35 Malware Removal - MajorGeeks Support Forums]
Hope you get it removed. -
I sometimes get a message that Firefox is using a large amount of memory.
* Make sure that you do not use [[Clear Recent History]] to clear the "Browsing History"
App tabs and Tab Groups (Panorama) are stored as part of the session data in the file sessionstore.js in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder]
* http://kb.mozillazine.org/Session_Restore -
Why is Firefox 6 using a LOT of memory on Vista x64
Memory usage on FF6 is 40% higher than FF5. Also, I have a lag when changing pages on a website. This is extremely irritating and did not happen with the previous version.
Is it using a significant amount more resources than 6.0 did?
I noticed 6.0 is a VAST resource hog over 5.0 and earlier. It's a very bad flaw in the new version, and has a lot of people upset.
What has me curious is whether this is a new resource problem or whether it was present in 6.0 and you are just not noticing it.
One suggestion: Don't run BETA versions of ANY software on "all your machines". Not when rolling back the version is not an option. That's generally a bad idea, since beta versions are likely to have bugs.
With FF, now, I would never let it automatically update. I don't trust their new update policies, so I would suggest you turn "auto updates" to OFF, and do it manually, only after you hear the new release is stable, which we know 6.0 is NOT. -
I am getting a message on the bottom of my computer task bar that says Firefox is using a large amount of the CPU. I noticed that my computer is running extremely slow and in thunderbird it takes a long time to print attachments.
I have another computer and I did not load the upgrade. That computer is working fine. Please helpI too have noticed that once i restored from iCloud. Pictures blurry and videos wont play!
Need help too!! -
I have a Dell Inspiron 710m, with Windows XP, Norton 360, IE8. My computer understanding and needs are simple. Norton lets me know that Firefox is eating memory and CPU. The machine often jams while this happens, whether or not Norton has flagged an operation, and then resumes function. Hotmail is in shambles (jamming between operations, and having sign out problem). Neither Norton nor CC Cleaner (including Registry) indicate a problem. This is a nifty little machine that I use for email, mostly newspaper subscriptions, online shopping and banking, personal, and for Internet research. I have tried more advanced versions of Firefox and found them buggy. So, I went back. The upgrades are coming too fast. Not everyone is going to invest in another machine for Windows 7 or IE 9 capability right away. Meanwhile, Firefox, which worked just fine, seems to be pushing along, in what seems to be an industry in which cooperation and compatibility have ceased to be important. I don't know what to do. I can't do complex diagnostics and fixes, and am not in an area where I would take this computer anywhere.
Thank you for taking the time out to reply. I don't know whether or not your suggestions would have worked, but I did solve my problem. I eventually figured out that the file, overlay.xul, was doing something and when I changed the filename, the bar went away.
I was reading that the xul error usually meant something wrong with an extension, but that didn't make sense because after uninstalling/reinstalling, there were no extensions present, on an assumption, of course. I noticed a file through a search, and it was located in a folder without a mozilla/firefox name in it, looked like a randomly generated folder name. I looked in the extensions. ini and noticed it pointed to that overlay.xul file in that random named folder and thought, what the hell, and just renamed the overlay.xul file to something else and the problem went away.
Thanks again. -
Recent xserver using a lot more RAM and is noticably slower.
To save battery life I lock both the graphics card and CPU into there lowest frequency settings. This was fine with little performance impact. However after a recent X server upgrade it has started using substantially more ram (around 5~ meg, use to be around 1). Also Firefox, and even Xterm and Vim now scroll very badly. Is there anything I can do about this, without raising the CPU/GFX frequency.
Thanks.Bump.
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I had an 8GB Original iPhone. Had hoped to get 16GB 3G, none left, so got 8GB. On my own phone I had 1.7 GB free. Synced new one with a few apps (have checked - dont use much memory). Im disappointed to see in 3G only 292MB left.
Does the 3G OS etc take up a lot more of the memory?
Am really happy with the phone apart from this ....The iphone is subject to the same gigabyte/gibibyte conversion that hard drives are: you lose about 7% of the stated capacity.
just as your 500gb drive only has around 465gb available, a 16gb iphone will only have 14.88 available.
another ~230mb is taken for the version of os x that runs on iphones/ipod touches, and you are left with about 14.5 available.
these are all approximate since a 16gb iphone may actually have 15.9 or 16.1gb depending on which manufacturer apple chose for the chips and i'm using a round 7% for the conversion.
i remember an old lacie portable hd of mine that was marketed as 18gb, but was a 16.9gb disk. after the conversion, it was only 15.5 or so. now that was a rip off... -
Server is using a lot more memory since upgrading from LMS 2.6 to 3.2 - any tips?
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
Hi, Can anyone tell me if they have a similar situation to mine
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
CiscoWorks LMS was upgraded from version 2.6 to 3.2
The Server previously ran at 3.5GB of Memory, but following the upgrade now runs at over 5GB of Memory.
The Server is a HP Proliant DL380 G4.
The Server has very poor response times following the upgrade, and we need to understand why this has occurred.
I guess I need to know if there are some services that you generally disable to improve performance or do we need to upgrade the hardware.
Device has 4G of physical memory with 4G swap size.
Any advice appreciated
Cheers, DomLMS 3.2 does take more memory that 2.6. There are more daemon processes which run (e.g. there are now two instances of the DFM servers to support scalability to 5,000 devices). As for how much RAM will be required, that will depend on the number of devices being managed and the other processes running on the server. With 4 GB of RAM, you should be able to manage up to 1.5K devices provided HUM is not installed, and the server is dedicated to LMS alone.
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I keep getting a warning from nortons that firefox is using a lot of memory (125mb). Why?
i never got this message until i upgraded to firefox5. it also gives warnings about excessive cpu usage
Windows puts up messages that this is too much - also it crashes, gets stuck and moves like a very slow turtle
I am trying to remove the McAfee toolbar, having uninstalled McAfee, the toolbar remains - I suspect it is intruding space and time wise as I have AVG already
thanks for your response,
Jaiia -
Firefox and Thunderbird are using a lot of memory and load pages very slowly!
CPU levels are going through the roof when using Thunderbird and Firefox.
Both programs are freshly installed on a new and also freshly installed version of windows 7!
Loading of my pages is taking forever and most pages don't load at all.
My email is [email protected]
My notebook got so hot that it turned itself off!
Memory is above 250 KB for firefox and Thunderbird above 150 kb!I do not have a ComObjects folder under C:\Program Files (x86)\Common Files. That is not part of Firefox.
wscript.exe is a utility included with Windows to run scripts at the system level. It generally is not used by major programs. If update.exe is starting up with Windows, you may be able to find the script that wscript.exe is running using [http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx Autoruns].
It definitely sounds viral. I suggest deleting the update.exe file, although Windows might prevent you from doing that until you kill all related processes. And if you have a persistent infection, the file may be restored or re-downloaded.
It might be easiest to seek assistance from a forum more dedicated to malware cleanups such as the following:
* [http://www.bleepingcomputer.com/forums/forum22.html Virus, Trojan, Spyware, and Malware Removal Logs - BleepingComputer.com]
* [http://forums.majorgeeks.com/forumdisplay.php?f=35 Malware Removal - MajorGeeks Support Forums]
Hope you get it removed. -
JDK6 locks use a LOT more memory then JDK5
I'm happy user of java 5 concurrency utilities - especially read/write locks. We have a system with hundreds of thousands of objects (each protected by read/write lock) and hundreds of threads. I have tried to upgrade system to jdk6 today and to my surprise, most of the memory reported by jmap -histo was used by thread locals and locks internal objects...
As it turns out, in java 5 every lock had just a counter of readers and writers. In java 6, it seems that every lock has a separate thread local for itself - which means that there are 2 objects allocated for each lock for each thread which ever tries to touch it... In our case, memory usage has gone up by 600MB just because of that.
I have attached small test program below. Running it under jdk5 gives following results:
Memory at startup 114
After init 4214
One thread 4214
Ten threads 4216With jdk6 it is
Memory at startup 124
After init 5398
One thread 8638
Ten threads 39450This problem alone makes jdk6 completly unusable for us. What I'm considering is taking ReentranceReadWriteLock implementation from JDK5 and using it with rest of JDK6. There are two basic choices - either renaming it and changing our code to allocate the other class (cleanest from deployment point of view) or putting different version in bootclasspath. Will renaming the class (and moving it to different package) work correctly with jstack/deadlock detection tools, or they are expecting only JDK implementation of Lock ? Is there any code in new jdk depending on particular implementation of RRWL ?
Why this change was made btw ? Only reason I can see is to not allow threads to release read lock taken by another threads. This is a nice feature, but is it worth wasting gigabyte of heap ? How this would scale to really big number of threads ?
Test program
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.*;
public class LockTest {
static AtomicInteger counter = new AtomicInteger(0);
static Object foreverLock = new Object();
public static void main(String[] args) throws Exception {
dumpMemory("Memory at startup ");
final ReadWriteLock[] locks = new ReadWriteLock[50000];
for ( int i =0; i < locks.length; i++ ) {
locks[i] = new ReentrantReadWriteLock();
dumpMemory("After init ");
Runnable run = new Runnable() {
public void run() {
for ( int i =0; i< locks.length; i++ ) {
locks.readLock().lock();
locks[i].readLock().unlock();
counter.incrementAndGet();
synchronized(foreverLock) {
try {
foreverLock.wait();
} catch (InterruptedException e) {
e.printStackTrace();
new Thread(run).start();
while ( counter.get() != 1 ) {
Thread.sleep(1000);
dumpMemory("One thread ");
for ( int i =0; i < 9; i++ ) {
new Thread(run).start();
while ( counter.get() != 10 ) {
Thread.sleep(1000);
dumpMemory("Ten threads ");
System.exit(0);
private static void dumpMemory(String txt ) {
System.gc();
System.gc();
System.gc();
System.out.println(txt + (Runtime.getRuntime().totalMemory()-Runtime.getRuntime().freeMemory())/1024);Controlling access/update to data is what DBMS are
all about.And our framework is more or less DBMS.
Imagine that you need a SQL database with following extensions:
If any row you have ever requested is modified, you should get a new version transparently plus get notified about the change (what fields have changed)
If any query you have ever done would return different rows then previously, the result collection should be modified and you should be notified about the change (delta to previous contents).
It is distributed-cache-meets-DBMS framework.
Some of the entities are backed by actual database for persistence, but others are not (they are in transient memory only, or views to data managed by completly different systems).
We could stay with R/W locks for the lists and plain locks for objects - but even the number of lists in the system (5-10k) could already have some effect when multiplied by the number of threads - and originally the cost for having R/W lock per object was relatively small and it seems cleaner and more scalable.
Just from top of my head I can give the example where I was searching the list of the objects for the index to insert a new one in write lock, but I have switched to searching this list in read lock, then changing to a write lock and searching area around previously found place (as list could be modified in the moment lock is upgraded, but in most cases I have to search only 1-2 indices around). This change had incredible perceived performance impact (as rendering code for a JTable was using model based on the same list with a readlock). For single object locking it is not so obvious, but still there are objects which can locked for reading from many threads concurrently. -
I play Farmville or on Pogo and my computer keeps giving me the hour glass and when I look on my Windows Task Manager it shows that I am using over 600,000 k of memory. When it does that I can't do anything unless I just use the power button to shut the computer down or use the task manager to "End Process". I do not like to do either of these so I usually just sit and wait for it to fix itself then later it does it all over again.
Also when I was doing defrag on the file type tab it showed two Mozilla Firefox so I am wondering if this is the issue but I only see one in the control panel.I play Farmville or on Pogo and my computer keeps giving me the hour glass and when I look on my Windows Task Manager it shows that I am using over 600,000 k of memory. When it does that I can't do anything unless I just use the power button to shut the computer down or use the task manager to "End Process". I do not like to do either of these so I usually just sit and wait for it to fix itself then later it does it all over again.
Also when I was doing defrag on the file type tab it showed two Mozilla Firefox so I am wondering if this is the issue but I only see one in the control panel. -
I keep getting Norton 'performance alerts' that Firefox is using a lot of memory. Should I worry?
Is there some action I should take because of thes alaerts? It happens every time I start Firefox
This is likely coming from a third-party program. You can try to Reset Firefox. [[Reset Firefox – easily fix most problems]]
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Why does activity monitor use a lot of memory?
Hi,
Is there anyone else experiancing this issue in Mountain Lion or iMac in general?
Moheganmohegan wrote:
Hello BD,
Varies. Right now the %CPU is always changing, from 1.2 to as much as 63.0 with real memory of 24.0 especially when opening up iTunes or even iPhoto.
-Mohegan
So not much then.
Quite normal.
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