Hi guys, we are setting NFS server on CentOS7 system. Everything working OK except speed, speed over NFS very drop... if we run dd command directly on server we are getting speed around 1,4Gbps, if we run from client connected to NFS is 200Mbps. Do you have maybe some advice what we need to check? Thank you! Best, Erik
On Sat, 28 May 2022 15:43:12 +0200 Erik Frange? via CentOS wrote:> we are setting NFS server on CentOS7 system. Everything working OK > except speed, speed over NFS very drop... if we run dd command directly > on server we are getting speed around 1,4Gbps, if we run from client > connected to NFS is 200Mbps. > > Do you have maybe some advice what we need to check?Speed of network card in the server. Speed of network card in the client. Speed of any and all routers and switches between the server and the client. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com
I would start with something like iperf to measure the actual network throughput b/w the client and server. Once you have a baseline for that, we'd have to know things like read and write buffer sizes, and sync vs async mode. On Sat, May 28, 2022 at 03:43:12PM +0200, Erik Frange? via CentOS wrote:> Hi guys, > > we are setting NFS server on CentOS7 system. Everything working OK except > speed, speed over NFS very drop... if we run dd command directly on server > we are getting speed around 1,4Gbps, if we run from client connected to NFS > is 200Mbps. > > Do you have maybe some advice what we need to check? > > Thank you! > > Best, Erik-- -- Skylar Thompson (skylar2 at u.washington.edu) -- Genome Sciences Department (UW Medicine), System Administrator -- Foege Building S046, (206)-685-7354 -- Pronouns: He/Him/His
On 5/28/22 9:43 AM, Erik Frange? via CentOS wrote:> Hi guys, > > we are setting NFS server on CentOS7 system. Everything working OK > except speed, speed over NFS very drop... if we run dd command directly > on server we are getting speed around 1,4Gbps, if we run from client > connected to NFS is 200Mbps. > > Do you have maybe some advice what we need to check? >Make sure you have good speed of physical connection along the whole path from server to client(s), enable Jumbo packets on all switches along the path. NFS experts will add NFS specific tuning. Valeri> Thank you! > > Best, Erik > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos