Date: Fri, 29 Oct 1999 10:48:41 -0500 From: "Pedro Fernando Giffuni" <pfgiffun@bachue.usc.unal.edu.co> To: freebsd-arch@freebsd.org Subject: Re: Storing small files in inodes Message-ID: <3819C1D9.FA1C3D58@bachue.usc.unal.edu.co> References: <19991029150228.BB45314BF7@hub.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
The code for this is available as part of MIT's exokernel, and there was
someone (csapuntz?) porting it to OpenBSD.
cheers,
Pedro.
"Jonathan M. Bresler" wrote:
> ...
>
> http://www.usenix.org/publications/library/proceedings/ana97/ganger.html
>
> With embedded inodes, the inodes for most files are stored in the
> directory with the corresponding name, removing a physical level of
> indirection without sacrificing the logical level of indirection. With
> explicit grouping, the data blocks of multiple small files named by a
> given directory are allocated adjacently and moved to and from the
> disk as a unit in most cases. Measurement for our C-FSS implementation
> show that embedded inodes and explicit grouping have the potential to
> increase small file throughput (for both reads and writes) by a factor
> of 5-7 compared to the same file system without these techniques. The
> improvement comes directly from reducing the number of disk accesses
> required by an order of magnitude. Preliminary experience
> with software-development applications shows performance improvements
> ranging from 30-300 percent.
>
> jmb
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-arch" in the body of the message
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-arch" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3819C1D9.FA1C3D58>