Al Boldi wrote: > There is a massive (3-18x) slowdown when re-querying a large nfs dir (2k+ > entries) using a simple ls -l. > > On 2.6.23 client and server running userland rpc.nfs.V2: > first try: time -p ls -l <2k+ entry dir> in ~2.5sec > more tries: time -p ls -l <2k+ entry dir> in ~8sec > > first try: time -p ls -l <5k+ entry dir> in ~9sec > more tries: time -p ls -l <5k+ entry dir> in ~180sec > > On 2.6.23 client and 2.4.31 server running userland rpc.nfs.V2: > first try: time -p ls -l <2k+ entry dir> in ~2.5sec > more tries: time -p ls -l <2k+ entry dir> in ~7sec > > first try: time -p ls -l <5k+ entry dir> in ~8sec > more tries: time -p ls -l <5k+ entry dir> in ~43sec > > Remounting the nfs-dir on the client resets the problem. > > Any ideas? Ok, I played some more with this, and it turns out that nfsV3 is a lot faster. But, this does not explain why the 2.4.31 kernel is still over 4-times faster than 2.6.23. Can anybody explain what's going on? Thanks! -- Al - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
