We're observing a big memory leak in 3.1[3-5]. We've gone until 3.15.8 and back to 3.14 because of LTS. Today we're running 3.14.21. The problem has existed for several months but recently has become a show-stopper. Here are the values of SUnreclaim: from /proc/meminfo, sampled at every 4h (units are kB): 87192 297044 765320 2325160 3306056 4412808 4799292 5085392 4999936 5521648 6628496 7785460 8518084 8988404 9141220 9533224 10053484 10954000 11716700 12369516 12847412 13318872 13846196 14339476 14815600 15293564 15798024 17092772 19240084 21679888 22399060 22943812 23407004 24049804 26210880 28034980 29059812 <== almost 30GB! After a few days the machine has lost so much memory that it panics or becomes very slow due to lack of cache and we have to reboot it. It's a busy file server of home directories. We have several other busy servers (including identical hardware) but the memory leak happens only in this machine. What is different with it is that it's the only place where we use: - nfs4 with authentication and encryption by kerberos - raid10 All others do only nfs3 or no nfs, and raid6. That's why we suspect it's a nfs4 problem. What about these patches: http://permalink.gmane.org/gmane.linux.nfs/62012 Bruce said they were accepted but they're not in 3.14. Were they rejected or forgotten? Could they have any relation to this memory leak? -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
