On 5 September 2013 05:29, Philippe Mouawad <[email protected]> wrote: > can't we open the file in random access and go to a line ? > Kind of RandomAccessFile + search newline character ? > Not sure it works
Only if the file has fixed length records, which is a bit of a restriction. Alternatively, the user or JMeter would have to create an index file of fixed length records that point to the start of each record before starting the test run. As I wrote already, it's much better to solve this before starting the JMeter test. > On Wednesday, September 4, 2013, sebb wrote: > >> On 4 September 2013 09:27, Philippe Mouawad >> <[email protected]<javascript:;>> >> wrote: >> > One useful case is distributed testing where you don't want to bother >> > splitting files for each injector. >> > Without this all injector will process lines in same order. >> > With it, no need for splitting. >> >> Separately randomised files may still result in two servers processing >> the same entry. >> Probably not at the same time, though that is not impossible either. >> >> The larger the input file, the less likely it is that the same entry >> will be processed more than once, but the larger the file, the larger >> the processing overheads. >> >> > of course I am not talking about uniqueness which is another matter. >> > >> > As always, it is a productivity feature, of course you can do it by hand. >> >> The problem is that randomising the lines at run-time is bound to >> increase the CPU and/or memory requirements. >> >> I think it would be a mistake to include this feature in standard JMeter. >> >> > Regards >> > Philippe >> > >> > On Tuesday, September 3, 2013, sebb wrote: >> > >> >> On 3 September 2013 07:45, Philippe Mouawad >> >> <[email protected]<javascript:;> >> <javascript:;>> >> >> wrote: >> >> > Hello, >> >> > I think it would be useful to implement a mechanism to extract a line >> >> > randomly from csv, >> >> > I often meet this case >> >> >> >> What is the use case? >> >> >> >> > and it's annoying to handle, it would be nice to >> >> > have it oob. >> >> > >> >> > One problem is how to ensure uniquness if it's another requirement. >> >> >> >> That's easy. Just randomise the CSV file before starting the test run. >> >> >> >> That's how String From File came about. >> >> We had a long-running test that used millions of PINs that could only >> >> be used once, so we randomised them and split them into separate files >> >> which could be used once. >> >> >> >> > Work with a modulo per thread or something like it ? >> >> > compute at start chunks of values ? >> >> > >> >> > >> >> > >> >> > >> >> > -- >> >> > Cordialement. >> >> > Philippe Mouawad. >> >> >> > >> > >> > -- >> > Cordialement. >> > Philippe Mouawad. >> > > > -- > Cordialement. > Philippe Mouawad.
