Hi, I'm using lustre 1.8.3 with a SSI (single system image). I'm trying to make some compilation bench. My process is simple : download 2.6.34 kernel extract it on a lustre mount make defconfig time make -j X
for reference, if I use only one client, with a local filesystem, it takes about 3min50. The same client alone with a mounted lustre partition (with local lock) takes more than 10 minutes. Using lustre on my SSI, I have these results : -j 4 : 9min37 -j 8 : 5min34 -j 12 : 4min42 -j 16 : 4min19 so even with 16 process (on 4 nodes), I can't compile faster than 1 local node ... I tried http://blogs.sun.com/atulvid/entry/improving_performance_of_small_files but it does not change anything. My lustre setup : 1 mgs + mds 3 OST Is there some other way to optimize it or is lustre just bad on multiple access for small file ? Regards, Maxence -- Maxence DUNNEWIND Contact : [email protected] Site : http://www.dunnewind.net 06 32 39 39 93 GPG : 18AE 61E4 D0B0 1C7C AAC9 E40D 4D39 68DB 0D2E B533
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