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Hi Doug, You need to add the -f flag if you want to do that. Andy On Mon, 7 Feb 2022, Doug Benjamin wrote: > Hi Adrian, > > Actually I would like to do > > > xrdcp file:///dev/shm/some_10GiB_random_file.dat root://testserver:1024//dev/null > > > Regards, > Doug > > -----Original Message----- > From: Adrian Sevcenco <[log in to unmask]> > Organization: CERN > Date: Monday, February 7, 2022 at 8:38 AM > To: Doug Benjamin <[log in to unmask]>, "[log in to unmask]" <[log in to unmask]> > Subject: Re: directing xrootd server traffic to /dev/null > > On 07.02.2022 16:18, Doug Benjamin wrote: > > Hello, > Hi! > You could use something like this (this is an example from my history): > xrdcp -N -p -P -f -v 9cf8e515-5391-52eb-bf92-794de25160d0.meta4 - > /dev/null > > HTH, > Adrian > > > We want determine the transfer speeds of a few xrootd client machines (as data sources). Is there a configuration setting to allow xrootd server to write the file to /dev/null? > > I have done a trick of creating a symlink in the file system to /dev/null. This is a less than ideal solution. While the initial part of the transfer goes well eventually it slows down significantly. > > I see the delay comes with this command - 220207 09:17:01 6324 benjamin.230610:[log in to unmask] ofs_close: use=1 fn=/data/xrootd/null > > > > Since I will want to stress test the clients. I want to saturate their output using xrdcp (xrdcopy) any suggestions? > > > > Regards, > > > > Doug Benjamin > > ######################################################################## > Use REPLY-ALL to reply to list > > To unsubscribe from the XROOTD-L list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 > ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1