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I certainly understand what I'm carrying out, a straightforward dd in my screening device, the disk can do 87MB/s with 10k iops, but consistently from iostat, I only see InnoDB working with 2k iops. I have setup enough buffer pool to 6G for just a 150MB load task in an idle server with substantial log file, log buffer, trx_commit to two, and so forth, the load make improvements to but not amazing, also There's a little enhancement Once i move my random varchar Key vital to secondary index and use int Main key in its place due to the fact now InnoDB grouping secondary alter in memory that cuts down some I/O.
Terrific publish up, And that i enjoy your stating ideal up entrance that this isn’t intended to be a suitable benchmark. The one particular lacking factor, in my opinion, is that you'll be loading right into a table without any secondary indexes.
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The next assignment in the next statement sets col2 to The existing (up-to-date) col1 worth, not the initial col1 worth. The result is that col1 and col2 have the exact same worth. This behavior differs from standard SQL.
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MyISAM writes to tables using a complete table lock (although it can complete in some cases concurrent inserts), but InnoDB only requires row-amount locks in lots of scenarios. Can we quicken the procedure by carrying out a parallel loading? That is what I made an effort to examination with my very last take a look at. I don't have faith in my programming abilities (or do not have time) to perform the file-in search of and chunking in the performant way, so I'll get started with a pre-sliced .
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Having just one one spot from the admin interface or Intranet, the place the enter has not been sanitized, makes your entire application susceptible.
Your tests is basically exciting and close from what my new testing, my screening is loading a 150M file to a table ( by load data infile ) with random varchar primary critical, it might achieve about 6MB/s insert fee but nevertheless can’t defeat MyISAM ( ten occasions more quickly). And thanks! your benchmark show that I am not by yourself about the InnoDB limitation.
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I even though to myself- oh, so probably we are able to speedup the import system by committing each row into the database, one by one, don’t we?