[Gluster-devel] questions about 'SYNCOP'

Hi all, I'm trying to understand syncop_* and others. but I don't understand at all. 1. what is the purpose of syncop_*? I found when glusterfs is executed, two of syncenv_processor thread is created. but when doing fio benchmark it works nothing. 2. I think '#define SYNCOP(subvol, stb, ...) is

Re: [Gluster-devel] Why vandermonde matrix is used in EC?

nan...@datalab.es>: > Hi Han, > > On 11/24/2016 04:25 AM, 한우형 wrote: > >> Hi, >> >> I'm working on dispersed volume(ec) and I found ec encode/decode >> algorithm is using non-systematic vandermonde matrix. >> >> My question is this: why non-system

[Gluster-devel] Why vandermonde matrix is used in EC?

Hi, I'm working on dispersed volume(ec) and I found ec encode/decode algorithm is using non-systematic vandermonde matrix. My question is this: why non-systematic algorithm is used? If we use systematic algorithm(not systematic vandermonde, It's not MDS) we can boost read performance. (no need