Daily Archives: June 25, 2009

If you don’t want to take any chances with your data, it is recommended that you backup hard disk partition table. Last Friday I was discussing some issues with one of our customer and he pointed out me dd command. … Continue reading →

Red Hat Enterprise Linux 4.6 and 5.0 introduced /proc/sys/vm/drop_caches, which allows the pagecache and slabcache to be cleared on demand. To free the pagecache: # sync; echo 1 > /proc/sys/vm/drop_caches To free dentries and inodes: # sync; echo 2 > … Continue reading →