The amount of data you're testing is far too small. Try upping it 10x so you have a longer run time and you achieve a more reasonable average.
On Tue, Sep 28, 2021 at 6:02 PM Nagmat Nazarov <[email protected]> wrote: > Dear Engineers, > > I have started working on a lustre file system. I have done a couple of > experiments so far: > On the first experiment I am writing 100 files each 10MB and the batch > size is 4K. I got *704MB/s* bandwidth. > > On the second experiment I am (writing 10 files each 10MB and reading 1 10 > MB file back) for 10 times. Here also the average write bandwidth is > *697MB/s* while read average bandwidth is *380MB/s* which is very weird > I guess? > > Experiment files are on : > *https://github.com/nagmat1/lustre_installation-experiment > <https://github.com/nagmat1/lustre_installation-experiment>* > I am using FIO as workload generator : *https://github.com/axboe/fio > <https://github.com/axboe/fio> * > > My question is, generally on ext4 file systems read average bandwidth is > faster that write average bandwidth, why is it *2 times slower *on lustre > file system. My ethernet speed is *10000Mb/s.* > > Kind regards > Nagmat Nazarov > _______________________________________________ > lustre-discuss mailing list > [email protected] > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org >
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