Dear all,
I am trying to bulk load rdf named graphs in virtuoso. I obtained the
latest version of virtuoso 7.2 using: git clone git://
github.com/openlink/virtuoso-opensource.git
The size of my named graphs file is: 98 GB. I used bulk loading functions
mentioned at
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtBulkRDFLoader
for bulk loading Virtuoso.
I am unable to bulk load as Virtuoso after sometime gives me a segmentation
fault(In Dkbox.c --doubleFree) and exits. I am running Virtuoso on 64GB RAM
machine and have set buffers in virtuoso.ini for 16 GB RAM. The parameters
in my virtuoso.ini file which I have modified are:
MaxCheckpointRemap = 272000
;; Uncomment next two lines if there is 16 GB system memory free
NumberOfBuffers = 1360000
MaxDirtyBuffers = 1000000
The output of my status() command before virtuoso shows segmentation fault
is given below. Can someone please suggest as to where am I going wrong and
how I can bulk load named graphs in Virtuoso 7.
$ ./isql 1111 dba dba
Connected to OpenLink Virtuoso
Driver: 07.20.3212 OpenLink Virtuoso ODBC Driver
OpenLink Interactive SQL (Virtuoso), version 0.9849b.
Type HELP; for help and EXIT; to exit.
SQL> status();
REPORT
VARCHAR
_______________________________________________________________________________
OpenLink Virtuoso Server
Version 07.20.3212-pthreads for Linux as of Apr 8 2015
Started on: 2015-04-10 00:46 GMT+5
Database Status:
File size 0, 26624 pages, 10718 free.
1360000 buffers, 15809 used, 13807 dirty 0 wired down, repl age 0 0 w. io
0 w/crsr.
Disk Usage: 68 reads avg 0 msec, 0% r 0% w last 0 s, 2472 writes flush
22.67 MB,
0 read ahead, batch = 0. Autocompact 302 in 225 out, 25% saved.
Gate: 0 2nd in reads, 0 gate write waits, 0 in while read 0 busy scrap.
Log = /home/Virtuoso/var/lib/virtuoso/db/virtuoso.trx, 35256 bytes
2042 pages have been changed since last backup (in checkpoint state)
Current backup timestamp: 0x0000-0x00-0x00
Last backup date: unknown
Clients: 2 connects, max 2 concurrent
RPC: 11 calls, 2 pending, 2 max until now, 0 queued, 0 burst reads (0%), 0
second 9877M large, 12500M max
Checkpoint Remap 38 pages, 0 mapped back. 2 s atomic time.
DB master 26624 total 10718 free 38 remap 10 mapped back
temp 256 total 251 free
Lock Status: 0 deadlocks of which 0 2r1w, 6 waits,
Currently 3 threads running 0 threads waiting 0 threads in vdb.
Pending:
Client 1111:2: Account: dba, 203 bytes in, 256 bytes out, 1 stmts.
PID: 62952, OS: unix, Application: unknown, IP#: 127.0.0.1
Transaction status: PENDING, 1 threads.
Locks:
Client 1111:1: Account: dba, 557 bytes in, 1052 bytes out, 1 stmts.
PID: 62408, OS: unix, Application: unknown, IP#: 127.0.0.1
Transaction status: PENDING, 1 threads.
Locks:
Running Statements:
Time (msec) Text
2657958 rdf_loader_run()
137 status()
Hash indexes
--
Thanks & Regards,
Jyoti
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