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95eabdd207
Commit2cfadb761d("netfilter: conntrack: revisit gc autotuning") changed the eviction rescheduling to the use average expiry of scanned entries (within 1-60s) by doing: for (...) { expires = clamp(nf_ct_expires(tmp), ...); next_run += expires; next_run /= 2; } The issue is the above will make the average ('next_run' here) more dependent on the last expiration values than the firsts (for sets > 2). Depending on the expiration values used to compute the average, the result can be quite different than what's expected. To fix this we can do the following: for (...) { expires = clamp(nf_ct_expires(tmp), ...); next_run += (expires - next_run) / ++count; } Fixes:2cfadb761d("netfilter: conntrack: revisit gc autotuning") Cc: Florian Westphal <fw@strlen.de> Signed-off-by: Antoine Tenart <atenart@kernel.org> Signed-off-by: Florian Westphal <fw@strlen.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.