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Conference csc32::cobol2

Title:Micro Focus Cobol/2
Notice:See note 10 for instructions on BUG reports
Moderator:CSC32::E_VAETH
Created:Sat Jan 19 1991
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:577
Total number of notes:1843

573.0. "SORT of large file in Digital Unix !" by DEKVC::DOOGYUPARK () Sun May 18 1997 07:33

Hi,

I had a test of sorting with Digital Unix V3.2E-2 , MFCobol V3.2B as follow.

 	- record size : 800 Bytes
	- total number of record  : 1,300,000 (1Gbytes in size)
  	- It takes 25 minutes and it consumes about 2Gbytes temporary area.

But,with 1400000 records,the size of temporary file grows continously up to 
more than 9 Gbyte and sorting is never ended , so i interrupted the sorting 
task.

I.e. in 1300000 records,it works but in 1400000 records,it doesn't works.

And i tried with SORT statement and MFSORT tool,but got the same result in
both trial.

Is it a limitation or a problem in sort of MFCobol or in UNIX ??

Thanks a lots,
dg.
T.RTitleUserPersonal
Name
DateLines
573.1sort size problem - fix in testPACKED::KIDS::NESCHKEMon May 19 1997 13:0710
Micro Focus has been working a fix for a sort problem (of files greater
than 1GB)  that's planned for
the next major release.   I have a pre-release copy of a compiler for 
testing.   If possible, I'd like to discuss (off-line) a way to have 
this fix tested in your environment.   

As I understand it, the problem occurred across a set of platforms 
running the Micro Focus product.

-Joanne
573.2May want to consider Syncsort?GRANPA::EBILLITERWed May 28 1997 10:0310
    Hello,
    
    I suggest you look at using Syncsort for the UNIX sort instead of a
    native sort.  Syncsort is known for better performance on all
    platforms.  They have tested on a VLM system and announced really
    terrific results!  Also they work with Micro Focus COBOL.  If you are
    interested we can try to find the Korean Syncsort contact, so you can
    explore this with the customer.
    
    Regards, Ellen 
573.3Waiting next release ...DEKVC::DOOGYUPARKWed Jun 04 1997 22:308
    Thanks,
    
    Now,i found out a workaround and i will try with next release of
    MFCobol.
    
    We are waiting for the test version of it.
    
    Regards, dg