* Re: arp(7) description of gc_stale_time
[not found] ` <0fed7f03-605b-430b-bdfc-47a67af3f083@www.fastmail.com>
@ 2021-04-14 10:09 ` Alejandro Colomar (man-pages)
0 siblings, 0 replies; only message in thread
From: Alejandro Colomar (man-pages) @ 2021-04-14 10:09 UTC (permalink / raw)
To: Adam Liddell, mtk.manpages; +Cc: linux-man, netdev
[CC += netdev]
On 4/12/21 12:13 AM, Adam Liddell wrote:
> Hi,
>
> Any opinion on this?
>
> Adam
>
> On Tue, 16 Feb 2021, at 17:00, Adam Liddell wrote:
>> Hi,
>>
>> The arp(7) page's description of gc_stale_time doesn't quite describe
>> the behaviour correctly, at least as I understand it.
>>
>> The current description suggests this is the time interval at which a
>> loop will look for stale entries. However, this field is the threshold
>> for marking an entry dead for removal, based on when it was last used
>> (see net/core/neighbour.c lines 935-942) and whether the table is over
>> gc_thresh1. How often this check is done appears to be determined by
>> base_reachable_time (/2) and the third option gc_interval is not
>> involved in this process as far as I can tell, despite its name.
>>
>> Perhaps a draft alternate description could be something along the lines of:
>>
>> Determines the threshold for removing a cache entry after it was last
>> used and when the cache is larger than gc_thresh1. Defaults to 60
>> seconds.
>>
Hi Adam,
Thanks for the ping. I don't know, sorry.
I added netdev@ so that maybe they can give an opinion. In the
man-pages, that text has been there since we use git, so I don't know
who wrote it.
Thanks,
Alex
--
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/
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2021-04-14 10:09 ` arp(7) description of gc_stale_time Alejandro Colomar (man-pages)
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