Re: [HPDD-discuss] How to read the I/O in flight statistic in obdfilter.*.brw_stats

Hi all, can anyone please explain how this individual statistic is calculated/updated? From what I understand it shows how many read or write requests have been in flight at certain points in time in the past. What I don't know is: when is this statistic updated. If I had to guess I would say it must be any of these: 1) whenever a new I/O request is issued, it puts the number of open requests in the statistic field

2) there is a service thread that reads the I/O queue size at a fixed interval Any help is appreciated! Regards, Michael -- Dr.-Ing. Michael Kluge Technische Universität Dresden Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany Contact: Willersbau, Room A 208 Phone: (+49) 351 463-34217 Fax: (+49) 351 463-37773 e-mail: michael.kluge(a)tu-dresden.de WWW: http://www.tu-dresden.de/zih