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oyasumiandClaude Opus 5
32bd2a2181
A scan runs dozens of agents concurrently, each holding a sandbox session, a browser session, a model client, and a SQLite handle. At the common 1024 soft file-descriptor limit that budget is exhausted around ~32 agents, after which SQLite can no longer open agents.db and agents fail en masse with "unable to open database file" (an fd-exhaustion symptom, not DB corruption). Measured directly: fd usage scales ~linearly with concurrent agents and hits 1024 at 32 agents; fds are reclaimed as agents finish, so this is a ceiling problem, not a leak. Strix never set its own limit, inheriting whatever the launching shell had (often 1024). Raise RLIMIT_NOFILE toward the hard cap at scan start (best-effort, idempotent, POSIX-guarded; warns when the hard cap is itself too low to lift without a privileged operator). Runs no longer depend on the operator setting ulimit. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
"""The scan runner raises the open-file soft limit so many-agent scans don't
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exhaust file descriptors (surfacing as SQLite 'unable to open database file')."""
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from __future__ import annotations
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import pytest
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from strix.core.runner import raise_open_file_limit
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resource = pytest.importorskip("resource")
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@pytest.fixture
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def _restore_nofile() -> None:
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soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
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try:
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yield
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finally:
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resource.setrlimit(resource.RLIMIT_NOFILE, (soft, hard))
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@pytest.mark.usefixtures("_restore_nofile")
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def test_raises_soft_limit_toward_hard() -> None:
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_, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
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if hard != resource.RLIM_INFINITY and hard <= 1024:
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pytest.skip("hard limit too low to raise in this environment")
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resource.setrlimit(resource.RLIMIT_NOFILE, (1024, hard))
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raise_open_file_limit(4096)
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soft, _ = resource.getrlimit(resource.RLIMIT_NOFILE)
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assert soft >= min(4096, hard)
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@pytest.mark.usefixtures("_restore_nofile")
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def test_never_lowers_an_already_high_limit() -> None:
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_, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
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if hard == resource.RLIM_INFINITY or hard < 8192:
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pytest.skip("need headroom above the requested minimum")
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resource.setrlimit(resource.RLIMIT_NOFILE, (8192, hard))
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raise_open_file_limit(4096)
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soft, _ = resource.getrlimit(resource.RLIMIT_NOFILE)
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assert soft == 8192
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@pytest.mark.usefixtures("_restore_nofile")
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def test_does_not_exceed_the_hard_cap() -> None:
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_, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
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if hard == resource.RLIM_INFINITY:
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pytest.skip("no finite hard cap to test against")
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resource.setrlimit(resource.RLIMIT_NOFILE, (min(1024, hard), hard))
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raise_open_file_limit(hard + 1_000_000) # ask for more than allowed
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soft, _ = resource.getrlimit(resource.RLIMIT_NOFILE)
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assert soft <= hard
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