[...] >> On some servers this behavior returned despite rsize being set to 32k, >> I had to set it to 8k to get reasonnable throughput. So there's >> definitly something fishy going on. This has been reported on over 20 >> machines, so I don't think it's faulty hardware we're seeing. >> >> Any thoughts, ideas on how to debug this ? > > Can you explain the network environment and the connectivity between the > client and server some more.
Clients are blade servers. The blade chassis have integrated cisco switches, which are plugged to a cisco 6509. The NFS server is on another site 40km away, directly connected to another 6509. These datacenters are linked via DWDM. Latency between a client and the NFS server is about half a millisecond. Jumbo frames are enabled. Blades have 1 Gb link The NFS server has multiple 1Gb links, used for different shares Neither are close to full utilization, maybe 100Mb/s of traffic and 20 000 paquets/s at the server end Alex _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
