Earlier this year I moved to El Capitan on my MacBook Pro. Ever since I've been finding the h2 console very very slow. Here are timings taken today, no other apps running:
2 min 5 sec: Launch the console and wait for it to finish loading. Uses a shell script which does the following:
cd "/Applications/h2 1.3.167/bin"
java -cp h2-1.3.167.jar org.h2.tools.Server
2 min 48 sec: Click on the console's Connect button in my browser and wait for the database to be opened and the console to be ready to work
2 min 20 sec: Run a very simple query which the DB engine takes 18ms to process
21 sec: Click on the console's disconnect button and wait to be back at the "front page" for the console
This is on 1.3.167; I tried 1.3.176 earlier today, and it's just as slow, but it gives an error about my database contents once it's finally been opened, so I'll have to look into that sometime.
Has anyone else come across this extreme slowness? What can I do to solve it?
For those who may come along after me, here is the resolution (for my configuration).
It turned out the problem was that my machine name (in Sharing preferences) consisted of my first name and then an apostrophe and then "MacBook Pro". (for example, Santa's MacBook Pro) Except, the apostrophe wasn't: it was a smart quote.
No, I didn't put it there! I didn't even know until now that it was possible to do that. The Mac did it all on its own.
And, of course, the machine name was copied through to HostName. The smart quote was in there, too. Which was causing Java's StringCoding.encode() to have problems encoding the host name string in UTF-8. Which was causing DNS resolution to take 5s instead of 80ms. Which was making the h2 Console work glacially slowly...
Here are the two threads which helped me solve the problem:
h2 google groups
another thread here
Good luck! I hope your resolution is as simple as mine turned out to be!
I had the same problem, but it was actually
sudo scutil --set HostName asdf
That fixed it for me.
In my case, running macOS Mojave, I solved the slowness simply by using localhost in URL instead of my local IP which seems to be the H2 default.
Related
I have installed Domino Designer in a Windows VM on VirtualBox on OS X.
When I start entering code in the JavaScript editor, Domino starts to work for every letter I type. The hourglass icon appears and the network symbol on the status bar flashes. This operation takes up to several seconds for every letter I type.
If I try to type anything before the hourglass disappears, the keyboard may hang up and the result is a long list of the same letters that I have to delete again (causing the hourglass to appear for each letter I delete again).
I have tried to disable functionality like "Content Assist", "Quick Diff" and other helpful stuff without luck.
I would really appreciate hints or tips to make this nightmare vanish...
I've not used domino designer, but first thought would be that your VM isn't handling the processing required by the designer.
What are the specs on you windows VM? Did you allocate enough RAM, for example? Make sure they match the requirements to run the designer:
http://www-969.ibm.com/software/reports/compatibility/clarity-reports/report/html/softwareReqsForProduct?deliverableId=1351628933716&osPlatform=Windows
Thanks to Joel for leading me into the right path.
I did several things, and together it now seems that I have a much better environment. I still see the hour glass from time to time, but it does not mess up my code anymore, and most of the time it does not bother me.
What I did was the following:
Changed the memory settings for Domino in this file:
[notes dir]\framework\rcp\deploy\jvm.properties
New values:
vmarg.Xmx=-Xmx1024m
vmarg.Xms=-Xms512m
vmarg.Xmca=-Xmca512k
Then I changed the virtual memory of my guest Windows install to a fixed swap file of 4096 MB.
At least I connected my Mac to a faster network using Thunderbolt to Ethernet cable adapter. I don't think the last thing did any difference, but at least I now have a faster and more reliable network connection.
I have a simple application using
QT += core gui network webkitwidgets
I've used windeployqt.exe to generate the 32 bits release on my win-10 64 bit computer. When I put the folder on a win-7 64 Bit desktop and double-click the app.exe, it never starts.
I can see it in the task manager, but I can't kill it, and if I try I cannot close the explorer folder in which I double clicked anymore.
I've checked the usual platform, ICU, qwindows.dll, and so on.
http://doc.qt.io/qt-5/windows-deployment.html
EDIT Precisions:
I've compiled with default 32 Bit kit: "build-Test-Desktop_Qt_5_5_1_MinGW_32bit-Release" with "mingw492_32"
I have a package "release" generated by windeployqt.exe using the --webkit switch. I start a command prompt:
> set path=
> set mingw=
Then I make sure that no Qt/Mingw things exists anymore in my environment variables.
I also rename "c:\Qt" into "c:\ __Qt".
I move my release folder on my desktop.
I start release\test.exe ( from the clean path shell )
Everything runs fine! So The release/test.exe has everything it needs without the path/mingw variable.
But as soon as I put the folder on another windows machine ( 7 instead of 10 ) it never starts.
I tried dependency walker. It shows a lot of "API-MS-WIN*.dll" missing...
It even shows much more missing dlls on the "good" machine than on the bad one !!!
Every single "missing dll" on the "bad" target machine is actually in system32 on this machine.
Thanks for advice, every advice is welcome, I'm a bit desperate... :)
Edit
It seems to be related to the machine itself. I have successfully deployed this (very small) app to 2 non developer machine on win7 and win8 respectively. But the above "bad machine" still resits running it...
Edit
The problem seems not to be general but related to this one particular machine. Hence, feel free to close or move to the appropriate forum as it is not related to Qt/windeplyqt. If I figure out a solution, and question is closed, I'll simply add a last edit. Safe Boot and malwarebyte are my next actions.
After a long investigation.
Do not believe dependency walker, it used to be a top notch tool but it is now outdated.
If there is a missing dll, the system will prompt you with "cannot load dll xxx.dll" anyway.
Your best shot in case a soft runs on machine X but not on Machine Y is:
start in safe mode ( run: msconfig --> diagnostic startup )
turn off any antivirus or non microsoft/driver software,
"run as administrator".
If you can run with step 3. Then proceed by elimination:
run without admin rights,
Start anti spyware, etc...
Add appropriate exception to your antivirus if it is the root cause.
If the antivirus is not the root cause, run process monitor on both machines. Then compare, what Failed on one machine and not the other ? Read the windows event log and compare any error messages on both machines.
run sfc /scannow to check disk
run a complete anti spyware scan/ pc-repair tool ( malwarebytes, combofix, ... )
Make sure you really have the very same package on both machines, make sure you are not trying to run an exe on mac OS, make sure your computer is on.
Call the oracle, you are in the matrix...
In my case the problem was Avast and it was solved by adding appropriate exception.
I'm currently on my third attempt trying to install Visual Studio 2015 on this computer. I have tried rebooting, hard shut downs, canceling setup and restarting, etc. Each time, it gets stuck at applying Microsoft ASP.net. I have tried leaving it overnight (12 hours). My download speed is 50-60 MBPS according to Ookla Speedtest. I am running Windows 10. I did do a "custom" installation and added C++, Python, and the Git extension. If I am not mistaken it said 7 GB size. Why is it doing this? Please help!
I don't understand why this isn't working because I installed VS 2015 for my laptop (a different computer) just a few days ago on a relatives WIFI and their speed was 3-7 MBPS.
(Note: The installer is not technically frozen since the loading dots on the bottom are moving.) However, bar hasn't filled up at all for like 6 hours.
EDIT:
Do I need ASP.NET (for C#, Python, and maybe C++)? Can I uncheck certain features for installation so that it wont try to install this? Also, when I cancel installation it never cancels and just stays there so I have to kill the installer with the task manager. This is getting incredibly frustrating.
Fixed it...
Easiest way is "threaten" to shut down the computer. Go into Power, restart system. You will be warned that there is a logging program which will not let the system reset. Cancel that program and then do NOT restart.
Installer immediately went on to next part and finished install after having been stuck for 6 hours...
I got it to work, it wasn't perfect, but here is what I did: It was getting stuck at very certain points, most notably ASP.NET. I did a little research and got an idea from something I read (I unfourtunetly can't find the source again). Sometimes windows opens invisible "confirm" type windows or installer windows that get stuck. When the installer got stuck I opened up task manager -> details, than checked On the visual studio process by right clicking then clicking analyzing wait chain. This showed me what process the VS install was waiting for. Then, I'd just kill the process. Messy, I know, but better then nothing. I had to do that 2 or 3 times. Afterward it said it installed correctly with 2 components that had warnings. ASP.NET was included. But everything else worked fine (c#, C++) Later I went back and did a repair. That worked pretty smooth. Finally, I installed the Python Tools successfully. (that part is sort of irrelevant but the point was that everything is now working fine).
edit, found another source: Visual Studio 2015 Community Edition Installation Stuck In Windows 10
Yes i had this problem too. To solve this open task manager and go to details tab then search for TiWorker.exe, right click on it and choose analyzing wait chain it will display many instances of the process that are in waiting mode , check all those processes and terminate them after doing this the installer will go to the next step.
To avoid this problem, you have to install IIS first.
Go to Control Panel -> Programs -> Turn Windows features on or off -> Select "Internet Information Services" -> OK
I had this problem a couple of hours before writing this answer and what worked for me was:
I opened other programs at least two or three and went to power and clicked on restart as usual it will warn you about open programs that need too be closed before shutdown or programs that are currently active I then clicked on force close and it closed the first program that I recently opened then I quickly clicked on cancel. Two minutes later instalation was back on track
Press Ctrl+Shift+Esc, then go to Tiworker.exe and terminate all the waiting processes.
I found a solution to this headache of a process to install Visual Studio. If you have tried everything and nothing seams to be working for you even by trying the command line shell then try this.
Go open task manager while running the installer and kill wusa.exe. It will kill the process to search for the update and continue the installation. You may have to kill some other processes as well if they get stuck. Its not great but it seams to be working.
wusa.exe seams to be the task that is the problem that prevents the installer from moving to the next step. This could be because your computer can not reach the update server.
This seams to be the case for both the Community and Enterprise Version of Visual Studio.
Today I stopped/started my GlassfishV3 instance and now I cannot access the addmin console located at http://servername:4848/. The screen says: "The admin console is loading..." This is going on forever now.
I have tried as follows:
I have tried adding the following entry to my domain.xml located at /glassfishv3/glassfish/domains/domain1/config as suggested in another Stack Overflow Q&A but after restarting the server still no luck.
<java-options>-Dcom.sun.enterprise.tools.admingui.NO_NETWORK=true</java-options>
I have also installed glassfishv3 on my local machine and cannot recreate the problem.I can go to http://localhost:4848 without any problem.
I have also looked at the server.log and jvm.log files located under the /glassfishv3/glassfish/domains/domain1/logs and nothing there that shed some light.
Any help would be very much appreciated
I had similar symptoms, and I tried some of what Dario had suggested as well, but it didn't work. It could be that I had a unique configuration for my dev env: I'm running Glassfish 3.1 on a VirtualBox Ubuntu 11.04 64-bit guest on a Windows 7 64-bit host. Quite by accident, I discovered an additional symptom: if I turned off the network on the Ubuntu guest, the console would load successfully on a localhost browser instance. That is, on the Ubuntu guest with the network off, I could successfully navigate to http://localhost:4848 and show the Glassfish admin console as expected. However, if the Ubuntu guest's network was on, I had the exact behavior suggested by the original poster: http://localhost:4848 would just sit forever on the inial loading page.
To make a long story short, I found that adding the following argument to the JVM options for server-config fixed the problem:
-Djava.net.preferIPv4Stack=true
When I made that change and restarted the Glassfish server, everything worked.
(Note that I also had in place some of the other settings recommended above, i.e., NO_NETWORK=true, and I'd adjusted the JVM memory footprint and set it to -server instead of -client. It could be that these settings are required as well, though they weren't sufficient on their own in my case.)
I was having this exact same problem. I could deploy in run mode, but it would hang forever in Debug mode. IntelliJ was hanging on the breakpoints. I muted the breakpoints, and glassfish3 worked good as new. I didn't have to change any domain.xml settings. Check your breakpoints!
I found a solution to my problem. Setting the java-option to NO_NETWORK to true did not work so I upgraded from 3.0.1 to 3.1 and it got fixed. Not immediately though, I had to stop/start the Glassfish server a couple of times before I got into the admin console without any really long delays.
Solution
The solution was to upgrade from the command line using the pkg utility.
You can find the steps in this link:
http://download.oracle.com/docs/cd/E18930_01/html/821-2437/gkthu.html#gktjf
Or do as follows:
Go to as-install-parent/bin
./pkg image-update
as-install-parent/glassfish/bin/asadmin start-domain --upgrade domain-name
as-install-parent/glassfish/bin/asadmin start-domain domain-name
UPDATE
I had peformance issues again and I found this other solution in Joshi's tech blog:
http://joshitech.blogspot.com/2009/09/glassfish-application-server.html
Basically add the following jvm options in the domain.xml. It should increase Glassfish boot up and deployment performance:
<jvm-options>-server</jvm-options>
<jvm-options>-Xms3000m</jvm-options>
<jvm-options>-Xmx3000m</jvm-options>
<jvm-options>-XX:MaxPermSize=192m</jvm-options>
<jvm-options>-XX:NewRatio=2</jvm-options>
<jvm-options>-XX:+AggressiveHeap</jvm-options>
<jvm-options>-XX:+AggressiveOpts</jvm-options>
<jvm-options>-XX:+UseParallelGC</jvm-options>
<jvm-options>-XX:+UseParallelOldGC</jvm-options>
<jvm-options>-XX:ParallelGCThreads=5</jvm-options>
I don't know if you are referencing this answer, but there is a second step described (disabling update module).
Two more ideas:
Check if the NO_NETWORK=true option really works (there should be no ads in GF admin console)
Watch the server.log (glassfish-install-dir/glassfis/domains/domain1/logs) during startup and look for the last log entry before the delay occurs. This could be a hint for the source of the delay.
Beware of blindly following Dario's example unless you've lots more RAM than most do.
-Xms3000m gives 3gb to Glassfish. Do YOU have that much spare RAM?
I tried this on my 4gb Mac with 1gb for Glassfish. Made no discernable difference at all...performance still sux.
I have a problem with Visual Studio 2010. When I start debugging it works slowly.
Internet Explorer opens, but the website loads extremely slowly.
My workmate and me work on the same project and he doesn't have any problem like that.
My hardware is 4G memory + Intel Core i5 CPU 3.20 GHz.
I stopped my anti-virus program but it couldn't be resolved.
I've had the same problem for over a year! And I solved it :)
I took me about 20 seconds to start debugging, and about 1 minute to stop it. It also took 2 minutes to load the solution! My colleague had NO problems with the same solution.
I found my way out of it by a coincidence.
I CHANGED the NAME of the solution, and things suddenly happened 30 times faster.
I CHANGED the solution name back and it slowed down again!
This is probably a FUBAR error made by the Microsoft development team. Don't try to figure out why it happens :)
This might be a IPV6 issue (that shows itself in windows vista/7 when using firefox or IE). I've had that at work and this is what made pages load instantly when using localhost (instead of the 20+ seconds that could happen on image-heavy websites I was developing).
IPv6 (taken from Firefox cannot load websites but other programs can )
Firefox supports IPv6 by default, which may cause connection problems on certain systems. To disable IPv6 in Firefox:
In the Location bar, type about:config and press Enter.
The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!, to continue to the about:config page.
In the Filter field, type network.dns.disableIPv6.
In the list of preferences, double-click network.dns.disableIPv6 to set its value to true.
For Internet Explorer, try using http://127.0.0.1:PORT_NUMBER/ where PORT_NUMBER is the port you can see in your address bar. If the loading of the page is faster, then you might want to go check the C:\Windows\System32\drivers\etc\HOSTS file and make sure the only line mentioning localhost looks like 127.0.0.1 localhost.
Check to see if you have _NT_SYMBOL_PATH environment variable set. Getting symbols or pdb files for the assemblies used by your application from a symbol server could be the cause of the slow startup of your application when debugging. You can also look at the symbols setting in VS>Tools>Options>Debugging. Also, take a look at the output window and the status bar down at the bottom in VS when your app is loading and taking a long time to see what VS is busy doing.
Not sure if this applies to ASP.NET applications, but disabling the 'Show Parameter Values' option in the Call Stack window's context menu considerably speeds up the debugger on my machine.
Two things to check.
1. Remove all the parameters in the watch list.
2. Build >> Config Manager , Check the Configuration Mode: Debug/Release.
I have encountered the same problem. I could make it better by deleting the Folder created in the temporary aspnet folder. For that you need to close the solution that you have opened and then delete. I don't know if there is any other solution.