Enable usleep support #285
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I'm preparing a commit to add this flag and many others that are necessary to configure SQLite on OS X and Linux. Should be able to send a PR shortly. |
gjrtimmer
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Compile Section Closes mattn#175 Compile Section Closes mattn#201 Compile Section Closes mattn#206 Compile Section Closes mattn#404 Compile Section Closes mattn#217 Compile Section Closes mattn#224 Compile Section Closes mattn#234 Compile Section Closes mattn#242 Feature table Closes mattn#255 Description Section Closes mattn#232 Golang:1.6 not supported Closes mattn#272 Golang:1.5 not supported + compilation section Closes mattn#283 usleep Implemented Closes mattn#285 FAQ Section Closes mattn#289 Compile Section closes mattn#295 FAQ Section Closes mattn#305 PR339 Closes mattn#318 mattn#321 Compilation Section Closes mattn#341 PR407 Closes mattn#364 Feature `sqlite_vtable` Closes mattn#393 Compile Section Closes mattn#416 sqlite_trace feature Closes mattn#433 Compilation Section Closes mattn#435 Compilation Section Closes mattn#443 Golang:1.6 Not Supported Closes mattn#445 Compilation Section Closes mattn#451 Compilation Section Closes mattn#467 Compilation Section Closes mattn#491 Compilation Section Closes mattn#495 Compilation Section Closes mattn#505 Compilation Section Closes mattn#557 Compilation Section Closes mattn#560
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I've been trying to use these SQLite bindings for Golang and been observing that my queries pause frequently for a significant amount of time. Given enough contention accessing the database, the whole app grinds to a halt.
I thought I had a deadlock somewhere, but I think the cause is simpler and this online post http://beets.io/blog/sqlite-nightmare.html helped me track it down.
Basically, it seems to me that sqlite is being compiled without usleep support, which means that any backoff during contention incurs a significant penalty. Inspecting the code, I do not see
HAVE_USLEEP=1being defined anywhere in this codebase.Setting
-DHAVE_USLEEP=1in the#cgostanza ofsqlite3.goshould be sufficient, though I don't know if that's going to break any supported platform.The text was updated successfully, but these errors were encountered: