How to measure desktop login time with bootchart

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http://askubuntu.com – I've got an issue whereby after each reboot the first time I log into my session it takes ages. That is, it can take up to five minutes from the moment I enter my password until I can use the desktop. I was trying to use bootchart to debug the issue, but while bootchart itself worked, the graphics output are cropped at 105 seconds, so I cannot even see when compiz starts. Looking at /etc/init/bootchart.conf, it seems the graphic is cropped indeed after compiz start, but it doesn't seem to be my case bootchart --format=$format \ --crop-after=compiz,metacity,mutter,kwin,xfwm4 \ --anno (HowTos)