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24 Commits

Author SHA1 Message Date
Alexey Milovidov
71ed9ad060 Renaming according to the review suggestions 2021-08-28 01:32:35 +03:00
Alexey Milovidov
b1478368cd Fix error 2021-08-27 04:45:14 +03:00
Alexey Milovidov
864d01e564 Add pread_fake_async method 2021-08-27 03:35:04 +03:00
Alexey Milovidov
8fd643e22a Fix build 2021-08-27 01:57:34 +03:00
Alexey Milovidov
d184b79bba Progress on async reads. 2021-08-16 03:00:32 +03:00
Alexey Milovidov
91173b8934 Improve performance 2021-08-04 03:07:04 +03:00
Alexey Milovidov
462c89e6f8 Experiment with checking if data is in page cache 2021-08-01 10:44:23 +03:00
Alexey Milovidov
7861ca6ed6 Experiments 2021-07-29 01:30:12 +03:00
Alexey Milovidov
5c3f5cb35a Experiment with asynchronous readers 2021-07-26 03:34:36 +03:00
Alexey Milovidov
0a4e26e682 Experiment with sharing file descriptors 2021-07-24 01:50:14 +03:00
Alexey Milovidov
2d02a3a45d Fix errors 2021-07-11 05:43:54 +03:00
Alexey Milovidov
30826c7d7d Return O_DIRECT 2021-07-11 03:33:14 +03:00
Alexey Milovidov
2e41419e3b Fix build 2021-07-06 03:34:27 +03:00
Alexey Milovidov
9875adc00b Make it even worse 2021-07-06 01:09:39 +03:00
Alexey Milovidov
6d3d724cd4 Fix error 2021-07-05 23:20:25 +03:00
Alexey Milovidov
f29eb11e6c Fix error 2021-07-05 23:17:53 +03:00
Alexey Milovidov
21fb6ddea5 Remove AIO for sequential reads 2021-07-05 23:02:24 +03:00
alexey-milovidov
1d5a4cfa32
Revert "[RFC] Fix memory tracking with min_bytes_to_use_mmap_io" 2021-04-19 01:30:53 +03:00
Azat Khuzhin
6064f3ef1d Fix memory tracking with min_bytes_to_use_mmap_io 
With min_bytes_to_use_mmap_io=1 memory regions for mmap() will not be
accounted. But this creates issues, since if you will run simple
"SELECT * FROM big_enough_table" it will mmap lot's of files and the
process RSS will grow at some point, and before the kernel will
understand that it needs to unmap physical pages the clickhouse-server
will sync total_memory_tracker with RSS of the process and the
allocations will fail by per-server memory limits.

Also note, that this does not address all the issues with mmap()
regions.

v2: move track/untrack into the MMapReadBufferFromFileWithCache to avoid
data-race [1]

  [1]: https://clickhouse-test-reports.s3.yandex.net/23211/6acf6cb9b22cee7db8d1aa523a6208f63e792f7a/functional_stateful_tests_(thread).html#fail1
 2021-04-17 10:37:38 +03:00
Alexey Milovidov
2a8ac01cdb Rename as suggested by Kita 2021-03-28 22:24:28 +03:00
Alexey Milovidov
50f712e198 Integrate mmap cache to the infrastructure 2021-03-28 04:10:30 +03:00
Alexey Milovidov
bcdf3dce36 Add cache for mmapped files 2021-03-27 02:22:51 +03:00
Alexander Kuzmenkov
3e6b9f297f Some provisions for Android build 2020-07-15 14:16:00 +03:00
Ivan Lezhankin
06446b4f08 dbms/ → src/ 2020-04-03 18:14:31 +03:00