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Editorial Team
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Asked: 2026-05-18T01:08:08+00:00

I’ve been using Eclipse without issue (I mean, besides the usual) for several weeks

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I’ve been using Eclipse without issue (I mean, besides the usual) for several weeks now. It’s been speedy enough for my purposes. But as of today around noon, anytime I start typing an HTML tag or other autocomplete-able element, my whole System bogs down so much it’s completely unusable. Watching in Task Manager, I show that Eclipse jumps from 0 up to 10-15% every time I type a “<” or “>” symbol!

I have a Core i7 PC with 6 GB of RAM, so this definitely isn’t a system specs limitation. I’ve also uninstalled a couple of programs I installed today hoping maybe one of them was conflicting, but no dice. Even after a restart, I am unable to use Eclipse without pausing for several seconds every time it tries to auto-complete!

Anyone know what’s going on here? I did some searching but all I found were VERY old bug reports that say the developers “are aware of the issue and are working on a solution”.

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  1. Editorial Team

    First, I’d try bumping up the memory that eclipse has allocated to it:

    -vmargs
-Xms2048m
-Xmx3072m
-XX:MaxPermSize 128m

    That should be in your eclipse.ini file. This blog has some great reading as far as memory and Eclipse are concerned. Also you can read this lengthy SO thread if you need some more info and / or wish to induce sleep.

    Next, try speeding up autocomplete. Go to Window / Preferences / Java / Editor / Content Assist / Auto-Activation and decrease Auto activation delay from 500 to zero.

    Finally, you might look into hippie complete; the default key binding in Eclipse is ‘alt-/’ . This is also called “Word Completion” if you check out the shortcut list ‘ctr-shft-l’ ( that’s L as in list ). On my mac the default key setting is ‘ctr-.’ . This is a faster version of autocomplete that I believe harkens back to the days of emacs. It seems to work great with local variables but not so great with functions on objects. Different beast I guess.

    As a bonus, you can check here for a list of ways to speed up the Eclipse experience in general.

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