Atle Veka wrote:
Anyone have any experience to share about running mysql on a linux tmpfs (using memory)?
tmpfs is swappable. I would use ramfs which is not swappable.
For us it's worked out pretty well and is normally operating lightning fast compared to an identical SCSI based system. However, even though there is plenty of free memory linux makes weird decisions from time to time, temporarily killing performance, swapping in/out to make room.
Without more information it's difficult to say what's causing it. How do you check swapping activity?
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