…buffers. Buffers would be flushed within first few seconds so the effects…to make sure caches were clean. OLTP benchmark As the goal was to compare performance with different IO alignment, not different MySQL configurations…
Post: How Percona does a MySQL Performance Audit
November 24, 2008 By 17 Comments
…how fast they are. I can also get information about the all-important battery-backed write cache, how it’s configured…where there’s quicksand to be avoided. The changes Percona’s performance audits typically suggest can be really significant, and can completely change the performance…
Post: How much overhead DRDB could cause ?
June 2, 2008 By 4 Comments
…can be well below 10% The problem is however such configuration will likely have extremely poor performance…RAID card or something which has same effect, especially as it become pretty cheap these days. With good RAID as I benchmarked you can…where this overhead comes from so you can find how…
Post: Living with backups
November 6, 2008 By 28 Comments
…buffers only to…RAID configurations, the performance gains are quite clear. Now going back to flushing the data out of the cache…where would we be without one-liners) On Linux there is also a utility called ionice. It allows to affect how…
