Opinions are good too, tnx for the answer! However, I am surprised that the List don't have more opinions regarding I/O.
//Henrik -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of km Sent: den 28 april 2010 10:23 To: ADSM-L@vm.marist.edu Subject: Re: [ADSM-L] Linux i/o schedulers and TSM I've done some test regarding this but it was a pretty long time ago so I don't have any results to share, sorry, just an opinion. The default in RHEL is the CFQ scheduler which should be optimized for throughput which is what we want. Your other choices would be: deadline if you need low latency noop no scheduling at all You should probably give atleast the noop scheduler a try if you have the time since it could be beneficial depending on your storage, otherwise CFQ is an OK general purpose scheduler. -km On 26/04, Henrik Vahlstedt wrote: > God morning, > > Have anyone done performance testing with different i/o schedulers and rhel 5 > and TSM db, log and stgpools, and have a result they would like to share? > Anyone with opinions regarding i/o schedulers or are we TSM admins happy with > default settings?? > > > //Henrik > > > > > > > > > > ------------------------------------------------------------------- > The information contained in this message may be CONFIDENTIAL and is > intended for the addressee only. Any unauthorised use, dissemination > of the information or copying of this message is prohibited. If you > are not the addressee, please notify the sender immediately by return > e-mail and delete this message. > Thank you ------------------------------------------------------------------- The information contained in this message may be CONFIDENTIAL and is intended for the addressee only. Any unauthorised use, dissemination of the information or copying of this message is prohibited. If you are not the addressee, please notify the sender immediately by return e-mail and delete this message. Thank you
