Memory dump blog recovery
01 November 2006
My Firefox froze in one of the tabs when in another tab I had a long Fry-IT intranet blog half finished. To avoid having to rewrite the whole text again Jan showed me how to dump the RAM memory onto disk which I could then look through with standard tools. For this to work you have plenty of diskspace since the dump file is about 1Gb big:
$ sudo su - # df -h # cat /proc/kcore > /usr/kcore.dump # strings /usr/kcore.dump > /usr/kcore.strings # ls -lh | grep kcore -rw-r--r-- 1 root root 1016M 2006-10-30 10:18 kcore.dump -rw-r--r-- 1 root root 74M 2006-10-30 10:19 kcore.strings # less kcore.strings | grep 'Bla bla bla'
Was this the most boring blog item I've written in a long time? Maybe, but it's good to have it noted the next time Firefox crashes.