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Hi Patrick, Did this exact config file work in the previous release? Also, is this a complaint from your proxy server or from the data To answer your questions: Based on what you told me, the xrootd.chksum is using the native checksum calculation. So, there are no external resources being used. However, by default the checksum calculation uses memory mapped I/O to do the calculation. I suppose it's possible that there is not enough memory to map the file or memory mapping is not supported for the file system you are using. You can run the server specifying -d on the command line and then trying the xrdadler32 command to see what in he world it is doing The default cksrdsz as noted in the manual is: http://xrootd.org/doc/dev49/ofs_config.htm#_Toc522916527 ofs.cksrdsz 64m Andy On Sun, 23 Jun 2019, Patrick McGuigan wrote: > Hi, > > We recently updated our storage servers to CentOS 7.6 and our xrootd to > v4.9.1 and I am starting to see some odd behavior when checksums are being > computed. The config file is using: > > xrootd.chksum max 4 adler32 > > > Some questions: > > What is the default value for ofsofs.cksrdsz? > > The documentation for xrootd.chksum state that one can use the administrative > interface to list checksum jobs. Are there any examples for this? > > On a dataserver that is hosting a file I tried: > > export XRD_LOGLEVEL=Dump > xrdadler32 root://localhost//path/to/file > > and when I look at the output the item that sticks out is this response from > the server: > > > [2019-06-23 16:28:04.201142 -0500][Dump ][XRootD ] > [localhost:1094] Got kXR_wait response of 30 seconds to message kXR_query > (code: kXR_Qcksum, arg length: 85): Job resources currently not available. > > How do I determine what resources are currently not available? > the output of xrdfs localhost query stats a (somewhat trimmed) looks like: > > <stats id="buff"> > <reqs>39456910</reqs> > <mem>16047104</mem> > <buffs>394</buffs> > <adj>0</adj> > <xlreqs>0</xlreqs> > <xlmem>0</xlmem> > <xlbuffs>0</xlbuffs> > </stats> > > <stats id="link"> > <num>105</num> > <maxn>282</maxn> > <tot>47565</tot> > <in>6137490530255</in> > <out>17606648096180</out> > <ctime>14769030</ctime> > <tmo>354599</tmo> > <stall>0</stall> > <sfps>0</sfps> > </stats> > > <stats id="poll"> > <att>105</att> > <en>357683</en> > <ev>357616</ev> > <int>0</int> > </stats> > <stats id="proc"> > <usr> > <s>2941</s> > <u>438904</u> > </usr> > <sys> > <s>23163</s> > <u>484269</u> > </sys> > </stats> > <stats id="xrootd"> > <num>47565</num> > <ops> > <open>17892</open> > <rf>0</rf> > <rd>23894633</rd> > <pr>0</pr> > <rv>0</rv> > <rs>0</rs> > <wv>0</wv> > <ws>0</ws> > <wr>29762958</wr> > <sync>0</sync> > <getf>0</getf> > <putf>0</putf> > <misc>1999122</misc> > </ops> > <sig> > <ok>0</ok> > <bad>0</bad> > <ign>0</ign> > </sig> > <aio> > <num>0</num> > <max>62</max> > <rej>39162</rej> > </aio> > <err>876103</err> > <rdr>0</rdr> > <dly>0</dly> > <lgn> > <num>47565</num> > <af>0</af> > <au>47565</au> > <ua>0</ua> > </lgn> > </stats> > <stats id="ofs"> > <role>server</role> > <opr>7</opr> > <opw>1</opw> > <opp>0</opp> > <ups>0</ups> > <han>8</han> > <rdr>0</rdr> > <bxq>0</bxq> > <rep>0</rep> > <err>0</err> > <dly>0</dly> > <sok>0</sok> > <ser>0</ser> > <tpc> > <grnt>0</grnt> > <deny>0</deny> > <err>0</err> > <exp>0</exp> > </tpc> > </stats> > <stats id="sched"> > <jobs>30332198</jobs> > <inq>0</inq> > <maxinq>6</maxinq> > <threads>42</threads> > <idle>21</idle> > <tcr>923</tcr> > <tde>881</tde> > <tlimr>0</tlimr> > </stats> > <stats id="sgen"> > <as>1</as> > <et>0</et> > <toe>1561325797</toe> > </stats> > > > > Regards, > > Patrick > > ######################################################################## > 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