Re: [Virtuoso-users] infrequent errors on parallel querying

reproduce the described issue regarding the long >> evaluation times and/or the mentioned errors? >> >> Best regards >> Andy >> >> >> -Ursprüngliche Nachricht- >> Von: Nolle, Andreas >> Gesendet: Freitag, 4. März 2016 09:10 >&

Re: [Virtuoso-users] infrequent errors on parallel querying

ssue regarding the long > evaluation times and/or the mentioned errors? > > Best regards > Andy > > > -Ursprüngliche Nachricht- > Von: Nolle, Andreas > Gesendet: Freitag, 4. März 2016 09:10 > An: 'Hugh Williams' > Cc: Kingsley Idehen ; > virt

Re: [Virtuoso-users] infrequent errors on parallel querying

e mentioned errors? Best regards Andy -Ursprüngliche Nachricht- Von: Nolle, Andreas Gesendet: Freitag, 4. März 2016 09:10 An: 'Hugh Williams' Cc: Kingsley Idehen ; virtuoso-users@lists.sourceforge.net Betreff: AW: [Virtuoso-users] infrequent errors on parallel querying

Re: [Virtuoso-users] infrequent errors on parallel querying

On 3/4/16 3:12 AM, Nolle, Andreas wrote: > > Dear Kingsley, > > > > were you able to reproduce the mentioned behavior regarding the long > evaluation time? > > Did you find any reason for that? > > > > Best regards > > Andy > > > > It is being looked into by the development and support tea

Re: [Virtuoso-users] infrequent errors on parallel querying

Dear Kingsley, were you able to reproduce the mentioned behavior regarding the long evaluation time? Did you find any reason for that? Best regards Andy -- Site24x7 APM Insight: Get Deep Visibility into Application Pe

Re: [Virtuoso-users] infrequent errors on parallel querying

nd point, i.e. http Best Regards Andy -Ursprüngliche Nachricht- Von: Hugh Williams [mailto:hwilli...@openlinksw.com] Gesendet: Donnerstag, 3. März 2016 02:09 An: Nolle, Andreas Cc: Kingsley Idehen ; virtuoso-users@lists.sourceforge.net Betreff: Re: [Virtuoso-users] infrequent errors on p

Re: [Virtuoso-users] infrequent errors on parallel querying

> https://lists.sourceforge.net/lists/listinfo/virtuoso-users Begin forwarded message: From: Kingsley Idehen mailto:kide...@openlinksw.com>> Subject: Re: [Virtuoso-users] infrequent errors on parallel querying Date: 2 March 2016 at 13:28:22 GMT To: virtuoso-users@lists.sourceforge.net<

Re: [Virtuoso-users] infrequent errors on parallel querying

Hi Andreas, The select top 10 * from sys_l_stat order by waits desc; queries from the 8891 & 8895 instances do not show an excessive number of waits, only about 1990+ waits on the SYS_DAV_QUEUE index. When you ran those queries was the system under typical work load ie was the long running qu

Re: [Virtuoso-users] infrequent errors on parallel querying

Dear Hugh, please find the requested information about top50 at https://www.dropbox.com/s/ylrb20ylze38cj6/top50.zip?dl=0 Please notice that both errors (transaction deadlock and No ext map for dp 3193852 in uncommitted blob cpt) only occur if I run several queries (of the type already mentione

Re: [Virtuoso-users] infrequent errors on parallel querying

On 3/2/16 9:30 AM, Nolle, Andreas wrote: > > Dear Kingsley, > > > > thanks for your reply. > > > > The overall triple counts of each instance is > > - Virtuoso instance running at port 8891: 17765873 triples > > - Virtuoso instance running at port 8893: 27897291 triples > > - Virtuoso ins

Re: [Virtuoso-users] infrequent errors on parallel querying

ubleclick.net/gampad/clk?id=272487151&iu=/4140___ > > <http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140___> > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net

Re: [Virtuoso-users] infrequent errors on parallel querying

Dear Kingsley, thanks for your reply. The overall triple counts of each instance is - Virtuoso instance running at port 8891: 17765873 triples - Virtuoso instance running at port 8893: 27897291 triples - Virtuoso instance running at port 8895: 16956 triples - Virtuoso instance running

Re: [Virtuoso-users] infrequent errors on parallel querying

On 3/2/16 4:24 AM, Nolle, Andreas wrote: > > Hi Hugh, > > > > this was also my first guess, but the network is not the problem. This > is definitively the case because I’ve evaluated again q2 > >SELECT ?x ?b > >WHERE { > > SERVICE { > > ?x

Re: [Virtuoso-users] infrequent errors on parallel querying

Hi Hugh, this was also my first guess, but the network is not the problem. This is definitively the case because I’ve evaluated again q2 SELECT ?x ?b WHERE { SERVICE { ?x ?b . } . } at Vi

Re: [Virtuoso-users] infrequent errors on parallel querying

Sorry for sending the mail again, but my previous message to Virtuoso-users awaits moderator approval… So I cut out some parts: Hi Hugh, if I open the provided files with an editor, there is no error. For example, profile_q2_federated contain: Connected to OpenLink Virtuoso Driver: 07.20.3215

Re: [Virtuoso-users] infrequent errors on parallel querying

version 7.2.2.3215 since I updated as recently as two weeks ago… My Virtuoso instances hosting the following triple counts: -Virtuoso instance 8891: 17765873 -Virtuoso instance 8893: 27897291 -Virtuoso instance 8895: 16956 - Virtuoso instance 8899: 72372256 B

Re: [Virtuoso-users] infrequent errors on parallel querying

some additional indexing? Cheers Andy Von: Hugh Williams [mailto:hwilli...@openlinksw.com] Gesendet: Dienstag, 23. Februar 2016 01:05 An: Nolle, Andreas Cc: virtuoso-users@lists.sourceforge.net Betreff: Re: [Virtuoso-users] infrequent errors on parallel querying Hi Andreas, Missed that you

Re: [Virtuoso-users] infrequent errors on parallel querying

ruar 2016 17:05 An: Nolle, Andreas Cc: virtuoso-users@lists.sourceforge.net Betreff: Re: [Virtuoso-users] infrequent errors on parallel querying Hi Andreas, How are you running the script for the query profiles as all scripts provided contain errors of the form: Last login: Mon Feb 29 16:01:14

Re: [Virtuoso-users] infrequent errors on parallel querying

Dear Hugh, could you already open and inspect the files? Best Andy Von: Nolle, Andreas Gesendet: Montag, 29. Februar 2016 17:43 An: 'Hugh Williams' Cc: 'virtuoso-users@lists.sourceforge.net' Betreff: AW: [Virtuoso-users] infrequent errors on parallel querying Sorry

Re: [Virtuoso-users] infrequent errors on parallel querying

Sorry for sending the mail again, but my previous message to Virtuoso-users awaits moderator approval… So I cut out some parts: Hi Hugh, if I open the provided files with an editor, there is no error. For example, profile_q2_federated contain: Connected to OpenLink Virtuoso Driver: 07.20.3215

Re: [Virtuoso-users] infrequent errors on parallel querying

evaluation of these queries (without SERVICE) at the Virtuoso instance > running at port 8891. > > Best regards > Andy > > > > -----Ursprüngliche Nachricht- > Von: Hugh Williams [mailto:hwilli...@openlinksw.com] > Gesendet: Sonntag, 28. Februar 2016 22:2

Re: [Virtuoso-users] infrequent errors on parallel querying

willi...@openlinksw.com] Gesendet: Sonntag, 28. Februar 2016 22:21 An: Nolle, Andreas Cc: virtuoso-users@lists.sourceforge.net Betreff: Re: [Virtuoso-users] infrequent errors on parallel querying Hi Andreas, Generally there should be no create additional indexes as the 2 Full & 3 partial indexe

Re: [Virtuoso-users] infrequent errors on parallel querying

> FILTER ( ?x >= <http://eprints.wmin.ac.uk/id/eprint/1620> ) . > FILTER ( ?x < <http://pub.epsilon.slu.se/id/eprint/11557> ) . > } . > } > > at another instance is running possibly indefinitely... (stopped the > evaluation after 45 minutes). > &

Re: [Virtuoso-users] infrequent errors on parallel querying

silon.slu.se/id/eprint/11557> ) . } . } at another instance is running possibly indefinitely... (stopped the evaluation after 45 minutes). Best Andy -Ursprüngliche Nachricht- Von: Hugh Williams [mailto:hwilli...@openlinksw.com] Gesendet: Sonntag, 28. Februar 2016 04:14 An: Nolle, And

Re: [Virtuoso-users] infrequent errors on parallel querying

t of status() at > https://www.dropbox.com/s/v6hvw7j7uz9r9uq/virtuoso_files.zip?dl=0 > > Best > Andy > > > -Ursprüngliche Nachricht- > Von: Nolle, Andreas [mailto:no...@hs-albsig.de] > Gesendet: Freitag, 26. Februar 2016 09:00 > An: Hugh Williams > Cc: virt

Re: [Virtuoso-users] infrequent errors on parallel querying

Re: [Virtuoso-users] infrequent errors on parallel querying Hi Hugh, in the meantime I solved some of the errors. Assuming the following query is evaluated at endpoint running at port 8893: SELECT ?x ?a ?b ?P0src ?P1src WHERE { { SERVICE <http://141.87.4.8:8899/sparql> { ?x

Re: [Virtuoso-users] infrequent errors on parallel querying

Hi Hugh, in the meantime I solved some of the errors. Assuming the following query is evaluated at endpoint running at port 8893: SELECT ?x ?a ?b ?P0src ?P1src WHERE { { SERVICE { ?x ?a . FILTER ( ?x >=

Re: [Virtuoso-users] infrequent errors on parallel querying

ness of query results? > > Best > Andy > > > > Von: Nolle, Andreas > Gesendet: Dienstag, 23. Februar 2016 14:42 > An: 'Hugh Williams' > Cc: virtuoso-users@lists.sourceforge.net > Betreff: AW: [Virtuoso-users] infrequent errors on parallel qu

Re: [Virtuoso-users] infrequent errors on parallel querying

uoso-users@lists.sourceforge.net Betreff: AW: [Virtuoso-users] infrequent errors on parallel querying Hi Hugh, the query workload is almost equally distributed. The errors in the log regarding the lock file and “missed delete of name id cache” occurred both not before updating to Version 7.2.2.1.

Re: [Virtuoso-users] infrequent errors on parallel querying

ies (like the one above) at each Virtuoso > instance, but maximal 16 at one time over all instances. If you look at the > memory usage it starts normally but it increases over time as long as the > swap space is overcrowded… If this will be the case my code (running on > another server

Re: [Virtuoso-users] infrequent errors on parallel querying

Hi Andy, What is a typical query being executing that is result in a HTTP error and what is the actual error ? When the error occurs what is the status of the server at that point , please provide the output of running the command: status(); Are any errors reported in the “virtuoos.lo

[Virtuoso-users] infrequent errors on parallel querying

Hi folks, I've set up four Virtuoso instances (Version 7.2.2.3215) on an Ubuntu 14.04.4 LTS server with 12 cores and 128 GB memory. If I run several (federated) queries in parallel (maximal 16 at a time), where some of the queries may take several minutes, it may happened that a SPARQL endpoint