the code is too huge to include here.

Simplify it. That is, make a simplified version of it for testing. Just the single widget that displays your changing data, the timer routine that processes inbound packets and the updateDisplay() routine. This would be invaluable to you for testing the maximum throughput you can expect of Tk and your tcp code.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: Perl tk gui hangs when large data thrown to it by BrowserUk
in thread Perl tk gui hangs when large data thrown to it by ghosh123

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