Thanks Corion, you brougth me on the way of success. Turning off mod_deflate in the Apache2 configuration was the key.

a2dismod deflate
apache2 restart

[download]

The module mod_deflate does the buffering. Turning that module of will provide updates with the Perl-Environment every second as expected.

In reply to Re^2: HTML5, SSE, flush output '$| = 1' not working as expected by ehaase
in thread HTML5, SSE, flush output '$| = 1' not working as expected by ehaase

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