I am not seeing optimal performance out of my 4 X 2 cluster node. When I look at thread state that's writing files I see most of them are waiting on file open. Does anyone know how to further troubleshoot this issue?
Can someone from dev help with this? Is it overhead in fuse or something else? I am seeing file open operation taking anywhere between 30ms - 2 secs and this is killing the performance. On Fri, Apr 29, 2011 at 4:27 PM, Mohit Anchlia <mohitanchlia at gmail.com> wrote:> I am not seeing optimal performance out of my 4 X 2 cluster node. When > I look at thread state that's writing files I see most of them are > waiting on file open. > > Does anyone know how to further troubleshoot this issue? >
Can someone from dev look at this? I will probably open couple of bugs today. On Sat, Apr 30, 2011 at 3:29 PM, Mohit Anchlia <mohitanchlia at gmail.com> wrote:> Can someone from dev help with this? Is it overhead in fuse or > something else? I am seeing file open operation taking anywhere > between 30ms - 2 secs and this is killing the performance. > > On Fri, Apr 29, 2011 at 4:27 PM, Mohit Anchlia <mohitanchlia at gmail.com> wrote: >> I am not seeing optimal performance out of my 4 X 2 cluster node. When >> I look at thread state that's writing files I see most of them are >> waiting on file open. >> >> Does anyone know how to further troubleshoot this issue? >> >
On Sunday 01 May 2011 03:59 AM, Mohit Anchlia wrote:> Can someone from dev help with this? Is it overhead in fuse or > something else? I am seeing file open operation taking anywhere > between 30ms - 2 secs and this is killing the performance.* Can you recreate this problem on your setup at will? * Does the delay happen when you are opening any file or is it under certain scenarios - like excessive load? What is application that is facing this hang? To start with, check if the open on the backend (on a single brick) is taking long, with the same application. Pavan> > On Fri, Apr 29, 2011 at 4:27 PM, Mohit Anchlia<mohitanchlia at gmail.com> wrote: >> I am not seeing optimal performance out of my 4 X 2 cluster node. When >> I look at thread state that's writing files I see most of them are >> waiting on file open. >> >> Does anyone know how to further troubleshoot this issue? >> > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://gluster.org/cgi-bin/mailman/listinfo/gluster-users