William Fretts-Saxton wrote:
> Unfortunately, I don't know the record size of the writes.  Is it as
> simple as looking @ the size of a file, before and after a client
> request, and noting the difference in size?

and

> The I/O is actually done by RRD4J, [...] a Java version of 'rrdtool'

If it behaves like rrdtool, it will limit the size of the file, by
consolidating older data.  After every n samples, older data will be
replaced by an aggregate, freeing space for new samples.  To me that
implies random I/O.  You really need a tool like dtrace (or old
fashioned truss) to see the sample rate and size.

Cheers,
Henk
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Reply via email to