[HPDD-discuss] time until qos_prio_free=0 has an impact

Hi all, we recently reactivated an OST and now the 450 nodes send this OST many more I/O requests that they send to the other osts. We have 4 servers and 48 osts. The other oss have a load of about 100. The server with this ost has 1500 and many "filter_commitrw_write()) scratch-OST002f: slow i_mutex 30s" messages. Thus, I set qos_prio_free to 0 in /proc/fs/lustre/lov/scratch-MDT0000-mdtlov Does anyone have an expectation how long it will take until the load on this server will go down? Hours? Days? 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