Hi On 02/07/2013 11:12 AM, Adam Goryachev wrote: > Do you have any information on what your workload is, or how/why these > values might help? Most of our data servers are exporting data read-only via NFS. It helped well on these but more on download servers which allowed us to go from 200k 4MB downloads per day to 1M/day while adding new files constantly. > > You are changing values significantly from the default, and I am > cautious that they may cause other issues. Also, someone else has > advised to reduce nr_requests rather than increasing it? > I know, but these larger queues really helped a lot in re-ordering requests to better match the hardware underneath - but again, this was for hard drives with physical arms and not SSDs Cheers Carsten -- Dr. Carsten Aulbert - Max Planck Institute for Gravitational Physics Callinstrasse 38, 30167 Hannover, Germany phone/fax: +49 511 762-17185 / -17193 https://wiki.atlas.aei.uni-hannover.de/foswiki/bin/view/ATLAS/WebHome -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
