stephan
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a37fed0f62
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Rework the oo1.DB's distinct-per-VFS post-open() step to accept either a batch of SQL or a callback function. Increase OPFS's busy timeout to 10s.
FossilOrigin-Name: 9feefe253ac487cb52be6bdf91bdd305963266716baa08f2bf9505954ee76321
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2022-12-03 01:59:03 +00:00 |
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stephan
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95bc4d67bb
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OPFS VFS: translate createSyncAccessHandle() exceptions which appear to be locking violations to SQLITE_BUSY. This seems to improve concurrency considerably even with a reduced retry count of 5 (was 6).
FossilOrigin-Name: 0d36021d107d3afca190ad61c3380536ad0cc2d493d345d48f9f9c1191741128
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2022-12-02 18:06:26 +00:00 |
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stephan
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d0945f4638
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Doc and logging text tweaks in the OPFS async proxy and test app.
FossilOrigin-Name: 7ce8608e221924d2c7067687eb6eef0f3cab181d5b4132e55a67d8514b6ce94b
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2022-11-30 03:08:50 +00:00 |
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stephan
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a302e68476
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Rename one instance of opfs.OpfsDb to oo1.OpfsDb, as per [0c5c51f4fb04].
FossilOrigin-Name: 75b04c9b302ec66749d8f072a49e61de9640b868bec99eadeb5b4bdef354c336
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2022-11-29 06:56:09 +00:00 |
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stephan
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04184761de
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Internal restructuring of the OPFS sqlite3_vfs in order to facilitate certain experimentation and improve error reporting/hints if it cannot be activated. Deprecate the name sqlite3.opfs.OpfsDb, preferring sqlite3.oo1.OpfsDb for consistency with JsStorageDb and any future DB subclasses.
FossilOrigin-Name: 0c5c51f4fb04a4b90c50ec9704cfea9a3fb7d7d0ee55c1b0d4476129188217a6
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2022-11-29 05:25:08 +00:00 |
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stephan
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df5d06d03e
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More work on the OPFS concurrency testing app.
FossilOrigin-Name: c0458caca3508d5d252f9b5198bda4f51a5c1874540f014b17e409f2daab1706
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2022-11-24 17:53:09 +00:00 |
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stephan
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056a71562f
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OPFS concurrency test: add a URL flag to enable/disable unlock-asap mode.
FossilOrigin-Name: 1c1bf22eadae2a5a7d4358e7cdd22641c2efb9296f42e7376749293b3a58b114
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2022-11-23 20:49:08 +00:00 |
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stephan
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e79cb67c35
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Add an experimental OPFS VFS-specific URI flag, opfs-unlock-asap, which tells the VFS to release implicit locks ASAP. This permits higher concurrency but hurts performance considerably. This may or may not be obsoleted by other concurrency-related experimentation.
FossilOrigin-Name: d23c917013485ec2793125221f3936b05c39d6eca941629fb819b6b4aa714520
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2022-11-23 19:03:22 +00:00 |
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stephan
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ad1285c5c0
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Initial infrastructure for adding a mode to the OPFS VFS which causes implicit locks to be released ASAP, which increases concurrency at the cost of performance.
FossilOrigin-Name: c5b7a9715a13b696ab3ee965aa0a310f59b65f07cecd72faa2e3504bfd8eb632
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2022-11-23 16:39:07 +00:00 |
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stephan
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3eaaec945c
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OPFS concurrency tester: ensure that the work interval timer does not overlap with the work time.
FossilOrigin-Name: 8f2076553bc486ea6a17934695ecc02217461af2082d891697b62aab89bd1b43
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2022-11-23 15:33:49 +00:00 |
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stephan
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9f2be5db04
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OPFS contention test: give each worker a distinct recognizable name instead of a random one.
FossilOrigin-Name: 5f564bf7de7ce3ad7bedb5f06b3086ceaec55da768a60d74059fa4fba4328567
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2022-11-21 16:00:26 +00:00 |
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stephan
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b38ac0986e
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More tweaking of OPFS concurrency measures and the related test app.
FossilOrigin-Name: a8d4da1501d411085ec2fd48c4a056c8b1d97ef3c3203c5b403a854ac2864870
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2022-11-21 05:18:24 +00:00 |
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stephan
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36d5554c9a
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Resolve missing SQLITE_LOCKED result code which triggered a new (since last checkin) exception in the OPFS VFS. Improve output of the OPFS contention tester app.
FossilOrigin-Name: 2debbbca33bd4170a1dc4dbb5eb3e68523e51d289b06c551e5560ac4e32e433b
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2022-11-21 04:12:38 +00:00 |
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stephan
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27c4cd183d
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Add test app for experimenting with multi-worker OPFS concurrency. Tweak OPFS VFS to significantly improve the otherwise "unfortunate" concurrency situation.
FossilOrigin-Name: 96f76e7616f8157a342b9e1c42f7b1feab200d182268871a2b25f67d4ee2564c
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2022-11-21 03:50:52 +00:00 |
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