>Can you provide details on the physical storage? exp2524 via Megaraid 5120 EXT3 filesystem SLES11 SP3 Yes, we tuned the sysctl.conf file I can't get to the devclass definition right now but the default DISK device class has the same issue as my FILE device class as soon as there is a storage on top of it. I don't think it's the battery since a cp or dd on linux is blazing along at 220-300MB/s, but TSM can only do 10-15MB/s to a disk / file based storage pool.
I know TSM can use certain flags when writing to storagepools that change the cache behaviour, what I don't know is what I need to set it to for it to be fast. :-) Regards, Stefan On Fri, Nov 13, 2015 at 1:26 PM, Ryder, Michael S <michael_s.ry...@roche.com > wrote: > Stefan > > Can you provide details on the physical storage? What filesystem is in > use? What version of Linux? Did the installer configure and tune OS > parameters as indicated by TSM installation documentation? Are you allowed > to share the devclass and storage pool definitions? > > Mike > > On Friday, November 13, 2015, Stefan Folkerts <stefan.folke...@gmail.com> > wrote: > > > Hello all, > > > > We have a situation where one of our customers is showing very slow > > performance on writing to a disk or file type storage pool on disk. > > > > Writing to tape with TSM is fast. > > Writing a database backup to disk is fast (this writes to the same drives > > but it writes to the devclass definition and not the storagepool > definition > > of course) > > Writing to a disk or file type storagepool is very slow (10-15MB/s) > > Writing to the same disk in Linux is fast (200+ MB/s) > > > > I found and read this article: > > http://www-01.ibm.com/support/docview.wss?uid=swg21137676 > > > > But before I make a call with IBM I was hoping some of you might know the > > correct settings for disk/file type storagepools on this type of local > > storage. > > > > Regards, > > Stefan > > > > > -- > > Best regards, > > Mike <http://rbbuswiki.bbg.roche.com/wiki/ryderm_page:start>, x7942 > RMD IT Client Services <http://rmsit.dia.roche.com/Pages/default.aspx> >
