On Thu, Apr 28, 2011 at 9:37 PM, Chris Penn <cantorm...@gmail.com> wrote:
> The problem with short stroking is that you give up disk space for speed. > Short stroking is something that gamers do to speed up their hard drives > without spending money. It is better to buy a faster hard drive for > enterprise solutions IMO. > Yes, but it makes faster hard drives faster. Doing this on a 15K SAS drive can still offer a lot of benefit. Using an SSD will speed things up, but you still lose space. A 64GB SLC is going to run you $700, and you really don't want to go over about 50GB on that or it will become dirt slow. You can buy a 600GB 15K SAS drive for $400 and use 50GB of it to speed things up. You won't get the same performance as an SSD, but you will have very good performance and still have the option to store some data on the rest of the drive if you really need to. If this was for a database server that was going to get a lot of load I would say SSD all the way, but if you are just looking for better performance for mail and web servers short stroking should be enough. > > For solid state drives, you can improve efficiency by "aligning" the blocks > in an SSD partition. > > Aligning SSD Partitions: > http://bit.ly/gWINKB > > Chris... > > > On Thu, Apr 28, 2011 at 11:09 PM, Peter Manis <peter.ma...@gmail.com>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. >> >> Here is an article from a couple years ago showing throughput at different >> partition sizes and how the I/O is almost doubled by short stroking. >> http://www.tomshardware.com/reviews/short-stroking-hdd,2157-6.html >> http://www.tomshardware.com/reviews/short-stroking-hdd,2157-8.html >> >> >> On Thu, Apr 28, 2011 at 6:11 PM, Jeff Lasman <jpli...@nobaloney.net>wrote: >> >>> I'm building new webserver which will have either 2TB or 4TB of drive >>> space. >>> >>> Most of the space will be devoted to the /home partition. I'd like to >>> use >>> whatever the standard partition type is for CentOS if possible. >>> >>> 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 speed of access, >>> memory >>> usage, and drive space usage. >>> >>> Would I be better off creating several smaller machines as VPS instances? >>> >>> I imagine figuring this out is a journey rather than a simple answer but >>> I'd >>> like to move quickly to getting this server installed, so I hope I'll get >>> some >>> good information here. >>> >>> Thanks. >>> >>> 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 >>> >> >> >> _______________________________________________ >> LinuxUsers mailing list >> LinuxUsers@socallinux.org >> http://socallinux.org/cgi-bin/mailman/listinfo/linuxusers >> >> > > > -- > "As we open our newspapers or watch our television screens, we seem to be > continually assaulted by the fruits of Mankind's stupidity." > -Roger Penrose > > _______________________________________________ > LinuxUsers mailing list > LinuxUsers@socallinux.org > http://socallinux.org/cgi-bin/mailman/listinfo/linuxusers > >
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