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Hi Martin, I didn't want to spam everyone with an strace so I have sent them in a direct email. The top level BDII is RAL in the UK:*lcg*-*bdii*.gridpp.ac.uk Cheers, Dug On 22 March 2010 21:51, <[log in to unmask]> wrote: > Hi Dug, > > > We have had some issues with file transfer from our WN back to remote > SE's. So I have been > > carrying out some testing to try and replicate the issue. > > I am now seeing strange results from local and remote grid sites with > various SE srm > > implementations: > > > > The test is a simple simultaneous lcg-cp of a 10M file for varying > amounts of WN's . > > > > Summary: > > lcg-cp's from Glasgow to DPM sites local and remote are 100% successful. > > lcg-cp's from Glasgow to CASTOR/STORM sites are 50% successful. > > lcg-cp's from Glasgow to DCACHE sites are 20-50% successful. > > > > Our WN's have lcg_util-1.7.6-1.sl5 installed. > > > > We initially thought this was network related but now I am not so sure > and think it definitely > > has something to do with the srm it is using. Does anyone know of any > current issues with > > lcg-cp and the varying srm implementations or have you seen anything > similar? > > Can you repeat the tests like this: > > strace -o /tmp/trace-$i lcg-cp ..... > > where $i should be unique per file. Then we will be able to see which > connection attempts led to timeouts. > > Which top BDII are you using? > -- ScotGrid, Room 481, Kelvin Building, University of Glasgow tel: +44(0)141 330 6439