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qa: Limit -maxconnections in tests

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On systems such as NetBSD, this change enables the execution of
functional tests.
This commit is contained in:
Hennadii Stepanov 2024-12-19 15:01:27 +00:00
parent c1252b14d7
commit d9d5bc2e74
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1 changed files with 11 additions and 0 deletions
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11
test/functional/test_framework/util.py
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@ -453,6 +453,17 @@ def write_config(config_path, *, n, chain, extra_config="", disable_autoconnect=
f.write("unsafesqlitesync=1\n")
if disable_autoconnect:
f.write("connect=0\n")
# Limit max connections to mitigate test failures on some systems caused by the warning:
# "Warning: Reducing -maxconnections from <...> to <...> due to system limitations".
# The value is calculated as follows:
# available_fds = 256 // Same as FD_SETSIZE on NetBSD.
# MIN_CORE_FDS = 151 // Number of file descriptors required for core functionality.
# MAX_ADDNODE_CONNECTIONS = 8 // Maximum number of -addnode outgoing nodes.
# nBind == 3 // Maximum number of bound interfaces used in a test.
#
# min_required_fds = MIN_CORE_FDS + MAX_ADDNODE_CONNECTIONS + nBind = 151 + 8 + 3 = 162;
# nMaxConnections = available_fds - min_required_fds = 256 - 161 = 94;
f.write("maxconnections=94\n")
f.write(extra_config)