----- Original Message ----- > From: "Niklas Hambüchen" <mail@xxxxxx> > To: "Ben Turner" <bturner@xxxxxxxxxx> > Cc: gluster-users@xxxxxxxxxxx > Sent: Sunday, September 17, 2017 9:49:10 PM > Subject: Re: Confusing lstat() performance > > Hi Ben, > > do you know if the smallfile benchmark also does interleaved getdents() > and lstat, which is what I found as being the key difference that > creates the performance gap (further down this thread)? I am not sure, you can have a look at it: https://github.com/bengland2/smallfile > > Also, wouldn't `--threads 8` change the performance numbers by factor 8 > versus the plain `ls` and `rsync` that I did? Maybe not 8x but it will DEF improve things. I just recycled what was in my history buffer, I just wanted to illustrate that even though you see the stat calls in the strace application behavior can have a big impact on performance. > > Would you mind running those commands directly/plainly on your cluster > to confirm or refute my numbers? I wouldn't mind, but I don't have your dataset. Thats why I wanted to bring in a perf test tool that we could compare things apples to apples. What about running on the data that smallfile creates and comparing that? -b > > Thanks! > _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://lists.gluster.org/mailman/listinfo/gluster-users
