Joshua Stewart wrote:
I'm using a MacBook Pro (Intel Core Duo) for my Java development work.
I've noticed that each time I boot the laptop and then want to run a
Java app, Java takes a long time to startup. For example, if I boot the
laptop, then open a command line and type 'java -version', it takes over
30 seconds. On subsequent runs, everything is fast. So, the second
time I type 'java -version', it takes less than 1 second. Similar
behavior is exhibited when starting up Eclipse, applets, etc for the
first time after a reboot. What's going on?
How much RAM does the machine have?
Which java version is reported?
What does Activity Monitor show for disk activity, CPU, and memory usage?
To see all 3 at once:
1) View menu > Dock Icon > Show Disk Activity
2) Window menu > CPU History
3) In the main Activity Monitor window, click the System Memory tab.
In the System Memory display, pay particular attention to the Page ins/outs
numbers.
Is it really taking 30 seconds ('time java -version'), or does it just feel
like that long? I ask because a friend once complained that the first
launch of a bundled Java Swing app I gave him "took 45 seconds." When we
measured it, it was 12-15 secs. Subsequent launches were faster, a few
seconds max.
Even on a Core Solo Mac Mini with an unspectacular hard drive and paltry
512MB of RAM, the first launch of 'java' doesn't take 30 secs. More like
2-3. This is for 1.4 or 1.5 Java versions. 1.3 takes much longer because
it's being emulated under Rosetta.
-- GG
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