Metadata in zope / binary data on FS, was Re: [ZODB-Dev] __del__ with Persistent objects

Dieter Maurer dieter at handshake.de
Tue Jul 22 22:12:03 EDT 2003


Paul Winkler wrote at 2003-7-21 12:53 -0400:
 > On Sat, Jul 19, 2003 at 01:48:39PM +0200, Dieter Maurer wrote:
 > >   When I analysed the problem I recognized that the file
 > >   was uploaded but it took 11 minutes. During this time
 > >   the processors IO wait was between 50 and 90 percent.
 > 
 > 
 > >   The Zope worker process started to see the request only
 > >   after about 9 minutes.
 > > 
 > >   Our system administrator thinks the (old and cheap) disk
 > >   subsystem is to blame.
 >  
 > sorry if this is OT, but how do you measure IO wait?
 > I'd like to find out if the same is true on our
 > not-so-old SCSI disks.

"top" on Solaris reports IOWait time.


Dieter



More information about the ZODB-Dev mailing list