I've seen a few recommendations to mount volumes with the noatime (no access time) option. Supposedly, this increases disk throughput on busy servers by reducing the number of required disk writes (every file read doesn't also become a write).
Does anyone have any opinion or experience on this? Does it actually improve performance in real situations? And on the other side, does this introduce any problems? I've already identified one potential problem: tmpwatch uses atime to remove unused temporary files. With the noatime option, it could be removing files actually in use. Any other pitfalls? Assuming /usr, /var, /tmp and /home were on separate partitions, which could or should be mounted noatime? thanks in advance for your ideas! Eric
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