As far as I understand, there can be one disk-seek per rotation of a harddisk, therefore I am interested to know how many disk seeks are needed for writing a row to an SQLite table, including locking etc. Assume that there are no indexes on the table (not even a primary key). I assume that there is one disk seek to write a line to a file? As you understand, I want to compare performance with writing the same data to a flat file.
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1How will you compare performance? How does knowing how many seeks are involved help you compare performance? – jcolebrand♦ May 31 '11 at 19:49
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@jcolebrand, I am assuming that disk seeks will be the biggest performance bottleneck when writing a row to a table. Am I wrong about this assumption? – David May 31 '11 at 20:09
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You might be. It all depends on what you're measuring. This is the science part of computer science. – jcolebrand♦ May 31 '11 at 20:13
This question was answered on Stackoverflow.
By default its one transaction per disk rotation (roughly),
http://www.sqlite.org/faq.html#q19
The way to speedier writes is to wrap multiple ones inside a transaction.
