473,320 Members | 1,845 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,320 software developers and data experts.

JRE VM dying under random network events

Hi,

We've been troubleshooting a connection problem with a client of ours
for several weeks. Basically, a combination of network stuff appears
to be causing the VM to freeze, or at least just kinda wander off for
awhile.

Our client software pings our server roughly every 30 seconds. This
customer is connecting using HTTPS Tunneling. They're running through
their proxy server and hitting their ISP, routing to us via MCI's
backbone.

There's an MCI router in Salt Lake that consistently shows around 10%
packet loss average. At random points throughout the day, the
connection is dying and unable to restore within our 3 minute timeout
period. On most systems and scenarios, the client software recognizes
this and notifies the user allowing them to reconnect.

Under THIS particular scenario, however, quite often the VM simply
stops - no more attempts to ping, no acknowledgement that the
connection is dead or that no response has been received, and nothing
else happens until the applet is closed. it can be restarted
immediately and the connection will be fine and happy. ALL logged in
users are disconnected at the same time, and some see it right away,
others do not.

I HAVE discovered that most of the users who appear to have the dead
VM have 1.3.1_03 AND 1.4.2_01 installed on their system, though only
1.4.2_01 is running at the time.

If anyone else has seen something like this, please let me know. We're
attempting to recreate it inhouse by running through a proxy and
simulating the approximate packet loss they experience (since MCI has
been unwilling to admit there's a problem with their server regardless
of the ping plots we give them) but they have a non-mainstream proxy
server.

Thanks
Durin
Jul 17 '05 #1
0 1534

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

29
by: Chris Dutrow | last post by:
I searched around on the net for a bit, couldn't find anything though. I would like to find some code for a function where I input A Range Of Integers For example: Function( 1, 100 ); And the...
3
by: Yan ZHANG | last post by:
1. In a network, there are a number of nodes. Each node has a queue and a thread, performing the discrete event simulation. class CNode {... queue q; CWinThread* pthread; void Start();//to...
20
by: Levi Campbell | last post by:
Hi, I'm working on a random number generator using the internet as a way to gather entropy, I have two questions. 1. is there a way to capture the internet stream? 2. how would I skip every 2nd,...
7
by: Dave Rudolf | last post by:
Hi all. I have a multithreaded little app that I am writing. Periodically, I see messages on my console that read: The thread '<No Name>' (0xa7c) has exited with code 0 (0x0).
10
by: Marshall Belew | last post by:
I'm trying to synchronize a network app that uses random numbers generated by System.Random. Rather than pass every randomly generated number, I just pass the seed. I'm seeing a result that leads...
23
by: Alvin | last post by:
Well, I'm developing a Tetris game in SDL, but when it comes to deciding the next block, I'm stuck. It's random, but when I try something like seeding the randomizer with the time, it won't update...
104
by: fieldfallow | last post by:
Hello all, Is there a function in the standard C library which returns a prime number which is also pseudo-random? Assuming there isn't, as it appears from the docs that I have, is there a...
18
by: Linny | last post by:
Hi, Came across this article in the ComputerWorld website which has included C in the top ten dying languages. The top 10 dead (or dying) computer skills...
24
by: pereges | last post by:
I need to generate two uniform random numbers between 0 and 1 in C ? How to do it ? I looked into rand function where you need to #define RAND_MAX as 1 but will this rand function give me ...
0
by: DolphinDB | last post by:
The formulas of 101 quantitative trading alphas used by WorldQuant were presented in the paper 101 Formulaic Alphas. However, some formulas are complex, leading to challenges in calculation. Take...
0
by: DolphinDB | last post by:
Tired of spending countless mintues downsampling your data? Look no further! In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: Vimpel783 | last post by:
Hello! Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
0
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
0
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.