allow to configure min alloc size

[gridnevvvit]

Changelog entry

currently mkql allocator makes requests by chunks of 30MiB minimum, so making that configurable and changing that limit to 8MiB.

also minimal 'free' quota is 1MiB because of alignment rules (mkql aligns in 1MiB)

Changelog category

• Improvement

Additional information

...

[github-actions]

⚪ 2024-08-16 19:12:04 UTC Pre-commit check for 0883e0b has started.
⚪ 2024-08-16 19:15:52 UTC Check linux-x86_64-relwithdebinfo is running...
🟡 2024-08-16 20:49:18 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
40349	34998	0	4	5309	38

⚪ 2024-08-16 20:53:04 UTC Failed tests rerun (try 2) linux-x86_64-relwithdebinfo is running...
🟢 2024-08-16 21:02:51 UTC Tests successful.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
48 (only retried tests)	21	0	0	0	27

🟢 2024-08-16 21:02:59 UTC Build successful.
🔴 2024-08-16 21:03:32 UTC ydbd size 8.1 GiB changed* by +2.2 MiB, which is >= 2.0 MiB vs main: Alert

ydbd size dash	main: 28512db	merge: 0883e0b	diff	diff %
ydbd size	8 732 888 200 Bytes	8 735 237 016 Bytes	+2.2 MiB	+0.027%
ydbd stripped size	475 301 512 Bytes	475 370 920 Bytes	+67.8 KiB	+0.015%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2024-08-16 19:13:17 UTC Pre-commit check for 0883e0b has started.
⚪ 2024-08-16 19:17:31 UTC Check linux-x86_64-release-clang14 is running...
🟢 2024-08-16 19:55:55 UTC Build successful.

[github-actions]

⚪ 2024-08-16 19:35:25 UTC Pre-commit check for 0883e0b has started.
⚪ 2024-08-16 19:38:24 UTC Check linux-x86_64-release-asan is running...
🔴 2024-08-16 22:07:49 UTC Some tests failed, follow the links below.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
11485	11413	0	18	23	31

🟢 2024-08-16 22:08:53 UTC Build successful.
🟡 2024-08-16 22:09:24 UTC ydbd size 5.5 GiB changed* by +1.7 MiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 8dc96f7	merge: 0883e0b	diff	diff %
ydbd size	5 877 295 352 Bytes	5 879 078 896 Bytes	+1.7 MiB	+0.030%
ydbd stripped size	1 476 632 880 Bytes	1 476 955 248 Bytes	+314.8 KiB	+0.022%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}