With GNU Binutils & GCC > 자유게시판

We have a fully functioning mark-sweep garbage collector now. With alias & loop analysis it iterates over codeblocks & instructions therein to note function calls, optionally iterates over caller-save regs to incorporate in it’s register-alloc datamodel, optionally iterates over codeblocks & instructions therein to note equivalent regs, iterates over pseudoregs to see if they can now be inlined, & optionally over instructions to record store equivilents. Or that loop might be semi-manually unrolled using the C preprocessor! For constant number of iterations it’ll duplicate the loop body a pre-determined n-times. If this triggered any modifications it’ll check if there’s any dead edges & use the jump threader to remove them. So we feel that SQLite versions 3.6.4, 3.6.5, and 3.6.6 are safe to use for development work. But most of the EDB tests are for EDBAS. Stephen asked about getting test suites from people, like EDB. People test exciting new features, they don't test under-the-hood stuff. People postpone upgrading until version .4, so they won't test anything. Kevin mentioned that the bugs were created by race conditions we couldn't get in a simple test. Bruce couldn't figure out whether bugs were new or old or already fixed or something else.

But some bugs just required a bad vacuum. Like when Tom submits something, Haas doesn't look at it, which can be bad. Haas pointed out that the Linux foundation pays people quite well. Haas didn't really look at it, nor did Tom because they mostly assumed Alvaro was correct. Tom isn't quite that, Pool Table Size do we want to give him more power. Do we want to release 9.4 early? The release notes From version 3.1.0 apply equally to this release beta. We should allow adding new tests during beta. Stephen suggested that we're too restrictive about accepting new regression tests. We should also look at the coverage of our current regression tests. Peter suggested throwing out tests which have been passing for two years, or moving them out of the main suite. Andres pointed out that the corruption was invisible most of the time. This way, as the amount of memory the program uses grows, the threshold moves farther out to limit the total time spent re-traversing the larger live set. Simon pointed out that that particular patch had been hanging around for 2 years, and there wasn't really time pressure.

Simon suggested crediting people on the footer of the release notes for bug fixes. Testing with Valgrind shows that this release of SQLite is about 1% or 2% faster than the previous release for most operations. It could also fund testing. Stephen wants to put together a performance farm, or a high-stress testing environment. The problem is lack of testing. The two years were part of the problem because of incompatible concurrent changes. There’s several trivial (or at least as trivial as C gets) commands, though I’ll have to discuss the major commands over the next two days… This was a major feature of 9.3, it was one of the main reasons to upgrade. One of the ways which other projects have dealt with not having a reviewer/maintainer time is by paying a few maintainers to work on the project full-time reviewing and maintaining. Andrew suggested that we need ways to get customers involved, not just random folks on their laptops. Noah suggested just using security definer functions. We could write a new implementation in C using the same approach and compile and run our language on basically every platform under the sun. We could gather sample data sets and queries to run to get more of a variety of stuff.

Josh brought up example of webusers who run webapps as superuser because they ran into issues with permissions. Also there are issues of governance. These compression dictionary lookups/stores are implemented as a choice of straightforward hashmaps, binary trees, or combination thereof. Ofcourse variable assignment are from the only instructions which might have no effect other than to slow the CPU down with busywork. But there are some object types which don't have permissions. People suggested releating in June or July instead, if people are not going to test. ATOMICnnn values indicate that writes of aligned blocks of the indicated size are atomic. And some were WAL replay bugs, which didn't show up without full page writes. Matthias- Becomes lossy quite quickly, could imagine TAM that has many many line pointers per page / TIDs, so bitmap heap scans likely to always be lossy which could be pretty annoying. The actual size is large enough to accommodate all possible TIDs, so it will be small for small tables. 2. Regulation sizes: Pool tables come in different sizes, with the most common being 7-foot, 8-foot, and 9-foot tables. Dave pointed out that users don't want us loading a whole bunch of functions into the database just for monitoring.