[Linux-cluster] GFS Performance Problem / coherency between GFS access speed, and network bandwidth

Christian Brandes christian.brandes at forschungsgruppe.de
Mon Sep 17 16:17:29 UTC 2007

Thanks for the hints.

No, I do not mount with -o noatime because some of our applications need 
atime. Further this would only speed up reading, not writing.

I also tried the http://sourceware.org/cluster/faq.html#gfs_tuning 
hints. -o noquota gives some aditional performance but only a few percent.

Supprisingly the 1000BaseTX network's bandwidth is not totally used at 
all, just a small percentage.
Can the effect depend on network latency?

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