Hi, when multiple clients (about 70-80) access our NFS servers, we start encountering timeouts. All servers are running jessie (on VMware) and we use NFSv4 via IPv6. If only a small number of servers is accessing the server, everything works fine, on higher load random servers get a timeout on mount. While the timeouts occur, the load on the NFS server stays low (<0.5), as does the IO load. There are no limits on file handlers etc. tcpdump to the affected hosts gives these hints: ...reply ok 96 getattr ERROR: Request couldn't be completed in time I also tried increasing timeo at mount without any success. Does anyone have any ideas on this? best regards, Jan-Martin -- Dr. Jan-Martin Rämer Systemtechnik Zentrum für Hochschul-IT Rheinland-Pfalz Moselweißer Straße 4, 56073 Koblenz Telefon +49(0)261 9528-906 raemer@zit-rlp.de
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