NFS databases

Roy Omond omond at ebi.ac.uk
Wed Jun 21 10:22:54 EST 1995

In article <DAI3s3.8t6 at murdoch.acc.Virginia.EDU>,
wrp at dayhoff.med.Virginia.EDU (Bill Pearson) writes:

[...snip snip...]

> gbmam.seq is about 23Mbytes, so on the alpha, the program was reading
> and searching >1 Mb/sec, without any degredation by simultaneous
> searches elsewhere.  fgrep on the same file took 33 sec, while cat
> from the NFS system to the local system took 57 sec.

Jeez... 23 Mbytes in 20 seconds real time translates into something
like 1.15 Mbytes/second which equates to 9.2 Mbits/second (excluding
packet overhead).

Was this over a standard Ethernet ?  If so, then that's more than
92% utilisation...

Well all I can say is that if you try to do that repeatedly here,
you'd end up being, *ahem*, rather unpopular with everybody else.

Now if it's over FDDI or ATM then that's another matter.

Roy Omond
System Manager
European Bioinformatics Institute
European Molecular Biology Laboratory
Hinxton, Cambs., UK.

More information about the Info-gcg mailing list

Send comments to us at biosci-help [At] net.bio.net