On Thursday, April 28, 2011 09:09:33 pm Peter Manis wrote: > I've never bothered changing max inodes or block sizes, but you can > partition the drives to use the outer edge of the drive only, otherwise > known as short stroking. > > Since tracks on the outer edge of the platter have more sectors than the > tracks on the inner part, more data can be stored on the outer edge. This > means that there is less head movement and results in increased I/O and > minmum throughput closer to maximum throughput.
Reading this and other responses I realize I didn't explain properly. My biggest concern isn't speed, it's space efficiency. I suppose I should have written: With such huge drives, and Maildir directories installed in /home (in Maildir each email is in its own file), what should I look at in terms of block sizes and maximum inodes, to keep maximum efficiency in drive space usage, in speed of access, and in memory usage. My biggest concern is in the minimum size of a file. Maildir uses a separate file for each email. For example, how much space will a 3.0k email take up by default on a 1.6 TB partition vs on a 3.2 TB partition, vs on a 100 GB partition, presuming standard partitioning (CentOS 5.x) without changing any settings during partitioning. And how will adding the number of inodes affect the drive performance. And if the actual file size difference is significant, how will changing default block sizes affect speed of access and memory usage. Since average network speed on the system will be less than 10mbps, highest speed isn't as important as having room for all those small files in Maildir and in html directories. Can anyone help me figure out what's best? Jeff -- Jeff Lasman Post Office Box 52200, Riverside, CA 92517 Our jplists address used on lists is for list email only Phone +1 909 266-9209, or see: "http://www.nobaloney.net/contactus.html"; _______________________________________________ LinuxUsers mailing list LinuxUsers@socallinux.org http://socallinux.org/cgi-bin/mailman/listinfo/linuxusers
