Re: Cephfs total throughput

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Sep 15, 2015 at 9:10 AM, Barclay Jameson
<almightybeeij@xxxxxxxxx> wrote:
> So, I asked this on the irc as well but I will ask it here as well.
>
> When one does 'ceph -s' it shows client IO.
>
> The question is simple.
>
> Is this total throughput or what the clients would see?
>
> Since it's replication factor of 3 that means for every write 3 are
> actually written.
>
> First lets assume I have only one cephfs client writing data.
>
> If this is total throughput then to get the maximum throughput for
> what a client would see do I need to divide it by 3?
>
> Else, if this is what my client sees then do I need to multiply this
> by 3 to see what my maximum cluster throughput would be?

I believe this is client-facing IO. It's pretty simple to check if
you've got an idle cluster; run rados bench and see if they're about
the same or about three times as large. ;)
-Greg
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com



[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux