Install question #1 - repository location

Kam Leo kam.leo at gmail.com
Tue Mar 11 21:28:15 UTC 2008


On Tue, Mar 11, 2008 at 12:40 PM, Bill Davidsen <davidsen at tmr.com> wrote:
> I'm trying to find the best location for a repository to do FC8
>  installs. My first two trials were direct from DVD and NFS mounted. The
>  NFS mount showed that the max data rate to the new machine was only
>  about 12MB/s, so transfer rate isn't an issue, it's Gbit connection.
>  Therefore, I suspect that seek time may be an issue, I'm wondering if
>  people have compared putting the repository on a USB stick instead of
>  network.
>
>  --
>  Bill Davidsen <davidsen at tmr.com>

Drive seek times are in the range of 8 - 20 ms. Your NFS server's hard
drive has 8 - 32 MB of cache. The server's I/O driver provides
additional caching/buffering. Data is being accessed sequentially,
i.e. beginning of file to end of file. Unless the server has a heavy
I/O workload the disk access/seek times should be completely masked by
the buffering.

How is the server drive's seek time a limiting factor when your target
system also has to store that same data on its own drive?

Flash drive install will be faster because you eliminate the
networking protocol overhead.




More information about the fedora-list mailing list