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This wikiHow teaches you how to prevent your Mac computer from freezing and displaying the rotating color wheel. While there are some steps you can take to fix a currently frozen Mac, outright prevention is the best solution. Hm, I don't know if this is the same issue but my WoW is 'stuttering' a lot. Screen freezes up for 2-4 seconds every 2-4 seconds and everything goes super choppy.

Post by zenryoku42 Hi all, I'm having an issue where the client will freeze/pause for between 1 and 10 seconds, sometimes turning the screen completely white or black.
World of Warcraft freezing upon launch with GTX470. Discussion in 'Graphics. That Apple is including some new graphics drivers in 10.6.6 and maybe with Cataclysm out that update will enable the Mac client to use the newer version of OpenGL. But it would freeze after a few seconds in the world. I even tried just changing the effects to.

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Whenever I use 'ab' to benchmark a web server, it will freeze for a while after having sent lots of requests, only to continue after 20 seconds or so.

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Consider the following HTTP server simulator, written in Ruby:

I then run ab as follows:

During the first few seconds, ab does its job as it's supposed to and uses 100% CPU:

After about 13500 requests, system CPU usage drops to 0%. ab seems to be frozen on something. The problem is not in the server because at this moment, the server is calling accept(). After about 20 seconds ab continues as if nothing happened, and will use 100% CPU again, only to freeze again after several seconds.

I suspect something in the kernel is throttling connections, but what and why? I'm using OS X Leopard. I've seen similar behavior on Linux as well, though the freeze happens at a much larger number of requests and doesn't happen so often.

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This problem prevents me from running large HTTP benchmarks.

Paul Sweatte

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HongliHongli

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3 Answers

It sounds like you are running out of ephemeral ports. To check, use the netstat command and look for several thousand ports in the TIME_WAIT state.

On Mac OS X the default ephemeral port range is 49152 to 65535, for a total of 16384 ports. You can check this with the sysctl command:

Once you run out of ephemeral ports, you will normally need to wait until the TIME_WAIT state expires (2 * maximum segment lifetime) until you can reuse a particular port number. You can double the number of ports by changing the range to start at 32768, which is the default on Linux and Solaris. (The maximum port number is 65535 so you cannot increase the high end.)

Note that the official range designated by IANA is 49152 to 65535, and some firewalls may assume that dynamically assigned ports fall within that range. You may need to reconfigure your firewall in order to make use of a larger range outside of your local network.

It is also possible to reduce the maximum segment lifetime (sysctl net.inet.tcp.msl on Mac OS X), which controls the duration of the TIME_WAIT state, but this is dangerous as it could cause older connections to get mixed up with newer ones that are using the same port number. There are also some tricks involving binding to specific ports with the SO_REUSEADDR option, or closing with the SO_LINGER option, but those also could cause old and new connections to be mixed up, so are generally considered to be bad ideas.

mark4omark4o

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Instead of increasing the number of ports, change the length of TIME_WAIT on Mac OS X.

Torrent client for mac 2014. There are tons of free and useful torrent downloading software available for computer Operating Systems. In the crowd of different torrent software, it becomes hard to choose the right one that can provide you with a fast and convenient torrent downloading experience. Additionally, qBittornet is a best torrent clients for Mac because it does not show ads. Despite the interface being user-friendly it is clustered, when comparing to other torrent clients. Thought it is a new torrent client, it looks like that it came from the OS X time period.

If you’re dead set on using PuTTY on Mac, try this: PuTTY SSH client for Mac OS X - Download, Tutorial. 2.9k Views View 1 Upvoter. Anas Fettach. Updated Nov 19, 2015. As in the previous answers, you can use Terminal on mac. As I am used to putty on. Putty ssh client for mac os x. PuTTY for Mac OS X PuTTY for Mac is a port of the Windows version of PuTTY. However, there are many options for SSH clients for Mac, and this page discusses several of them.

This only works in development, but I can now ask ab for as many requests as I want without timing out.

Set the default timeout to 1000ms like so:

The brianp.net page mentioned in the other answer is no longer available. You can retrieve it from the internet archive.

FrederikFrederik

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Another option to solve the issue is to enable HTTP KeepAlive by adding the '-k' option. This will make ab to re-use the TCP connections and as consequence it won't exhaust all ports available. For example:

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ab -n 45000 -c 10 -k http://127.0.0.1:3000/

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Not the answer you're looking for? Browse other questions tagged socketsdebuggingnetworkingthrottlingapachebench or ask your own question.

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Normally a patch brings fixes, but in this case Blizzard came with a small patch (no idea what it actually fixed) but it introduced a really bad bug that caused severe freezing issues. This was mostly noticeable when you opened a new window (like the flight master).

After some searching i came to the next solution:

Change your sound format from 24 bit 192000 to 24 bit 96000. After i applied this change i didn't encounter any major freezes that i had earlier today in the game.

So if the NordVPN client itself crashes, the specified apps will not shut down and can continue to access the internet. Openvpn client mac os. You can choose which apps will be shut down in the event of a VPN disconnection. I'm not sure what you mean by having to open your browser. This is very handy, but it is not a firewall-based kill switch like AirVPN's.

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