Hi, Is it better now with my smart indentations? :)
2014-01-28 Ewa Szwed <[email protected]> > > > > 2014-01-28 Andy Seaborne <[email protected]> > > Hi there - this is what your messages look like to me ... finding your >> comments is quite tricky! (this is one is easier than your last one). >> >> Andy >> >> >> -------- Original Message -------- >> Subject: Fwd: Fwd: Spaql queries optimizations for Freebase set >> Date: Tue, 28 Jan 2014 12:28:51 +0000 >> From: Ewa Szwed <[email protected]> >> Reply-To: [email protected] >> To: [email protected] >> >> Hi Andy, >> Please find my comments. >> >> ---------- Forwarded message ---------- >> From: Andy Seaborne <[email protected]> >> Date: 2014-01-28 >> Subject: Re: Fwd: Spaql queries optimizations for Freebase set >> To: [email protected] >> >> >> On 28/01/14 10:54, Ewa Szwed wrote: >> >> Hi, >>> Thanks so much for this answer. >>> I am definitely going to test the changing order of filter/binding >>> constructs. >>> For my system configuration I run Jena and Fuseki on one virtual machine >>> with Linux Red Hat distribution and of 8 cores CPU, 64 GB RAM and 1.2 TB >>> hard drive. >>> I have configured Fuseki java -Xmx to 12000M. >>> >>> >> Too large for TDB unless you are doing large update transactions. >> Most of the memory used is out-of-heap. >> > > >> >> > Initially I had it set at 1200M and I saw >> OutOfMemory errors for some >> queries. >> The response size for my queries vary and >> can be from 600KB for 600MB. >> I can reduce to 6000MB, would that be >> recommended. >> >> >> My jena data directory size is 175 GB >> >>> I am storing more than 2 000 000 000 triples (the number of facts in >>> Freebase). >>> Ewa >>> >>> >> Ewa, >> >> Could you try an experiment for me please? >> >> Could you see if changing the "swapiness" makes a difference? >> Normally it's 60 but if you could try, say, 40, 20, 10, 0. There have >> been >> reports of odd effects reported but no reproducible test cases. >> >> I will check that and come back to you. >> >> Andy >> >> [1] >> >> https://access.redhat.com/site/documentation/en-US/Red_ >> Hat_Directory_Server/8.2/html/Performance_Tuning_Guide/system-tuning.html >> >> http://askubuntu.com/questions/103915/how-do-i-configure-swappiness >> >> >> >> >
