Hi, On 08.09.2017 15:59, Burkhard Linke wrote: > On 09/08/2017 02:12 PM, Marc Roos wrote: >> >> Afaik ceph is is not supporting/working with bonding. >> >> https://www.mail-archive.com/ceph-users@xxxxxxxxxxxxxx/msg35474.html >> (thread: Maybe some tuning for bonded network adapters) > > CEPH works well with LACP bonds. The problem described in that thread is the > fact that LACP is not using links in a round robin fashion, but distributes > network stream depending on a hash of certain parameters like source and > destination IP address. This is already set to layer3+4 policy by the OP. > > Regarding the drops (and without any experience with neither 25GBit ethernet > nor the Arista switches): > Do you have corresponding input drops on the server's network ports? No input drops, just output drop > Did you tune the network settings on server side for high throughput, e.g. > net.ipv4.tcp_rmem, wmem, ...? sysctl tuning is disabled at the moment. I tried sysctl examples from https://fatmin.com/2015/08/19/ceph-tcp-performance-tuning/. But there is still the same amount of output drops. > And are the CPUs fast enough to handle the network traffic? Xeon(R) CPU E5-1660 v4 @ 3.20GHz should be fast enough. But I'm unsure. It's my first Ceph cluster. Later I'll upgrade from 12.1.2 => 12.2.0 and will some more test. Regards, Andreas _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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