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Date: Mon, 5 Nov 2007 07:58:38 +0300 From: Al Boldi <a1426z@...ab.com> To: linux-fsdevel@...r.kernel.org Cc: linux-kernel@...r.kernel.org Subject: Massive slowdown when re-querying large nfs dir 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? Thanks! -- Al - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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