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It will probably break other things though... I have to leave now. I will play with it tomorrow. Lukasz On Thu, Jan 27, 2011 at 6:02 PM, Lukasz Janyst <[log in to unmask]> wrote: > Looks good. > > Lukasz > > On Thu, Jan 27, 2011 at 5:58 PM, Brian Bockelman <[log in to unmask]> wrote: >> Hi Lukasz, >> >> How about this patch? >> >> Brian >> >> Index: net/netx/src/TXNetFile.cxx >> =================================================================== >> --- net/netx/src/TXNetFile.cxx (revision 37899) >> +++ net/netx/src/TXNetFile.cxx (working copy) >> @@ -1387,7 +1387,7 @@ >> } >> >> if (newbsz > 0) >> - fClient->SetCacheParameters(newbsz, 0, XrdClientReadCache::kRmBlk_FIFO); >> + fClient->SetCacheParameters(newbsz, -1, XrdClientReadCache::kRmBlk_FIFO); >> } >> >> //_____________________________________________________________________________ >> >> >> On Jan 27, 2011, at 11:56 AM, Lukasz Janyst wrote: >> >>> Hi Brian, >>> >>> On Thu, Jan 27, 2011 at 5:37 PM, Brian Bockelman <[log in to unmask]> wrote: >>>> So, if we use TTreeCache on any tree on the file, read-ahead is turned off? >>> >>> To be precise, async reads from ROOT force the cache >>> synchronization with xroot and this may overwrite cache settings of >>> the underlying xroot client (including the readahead size). >>> >>>> I would say this is simply wrong >>> >>> Well, I agree. I will have a closer look and try to fix it. >>> >>> Lukasz >> >> >