From: Arun Sharma <asharma@fb.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>
Subject: Re: [PATCH] net: compute a more reasonable default ip6_rt_max_size
Date: Fri, 25 May 2012 15:22:54 -0700 [thread overview]
Message-ID: <4FC0063E.8080209@fb.com> (raw)
In-Reply-To: <1337978820.10135.1.camel@edumazet-glaptop>
On 5/25/12 1:47 PM, Eric Dumazet wrote:
> On Fri, 2012-05-25 at 13:15 -0700, Arun Sharma wrote:
>> The algorithm is based on ipv4 and alloc_large_system_hash().
>>
>
> Why is it needed at all ?
>
> IPv4 has a route cache with potentially millions of entries, not IPv6.
With the default size of 4096 for the ipv6 routing table, entries can
get garbage collected and hosts could lose their default route and
therefore lose connectivity.
We actually saw it happen.
-Arun
next prev parent reply other threads:[~2012-05-25 22:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-25 20:15 [PATCH] net: compute a more reasonable default ip6_rt_max_size Arun Sharma
2012-05-25 20:26 ` David Miller
2012-05-25 20:47 ` Eric Dumazet
2012-05-25 22:22 ` Arun Sharma [this message]
2012-05-25 22:51 ` David Miller
2012-05-26 0:08 ` Arun Sharma
2012-05-26 0:11 ` David Miller
2012-05-26 0:44 ` Arun Sharma
2012-05-26 3:39 ` Eric Dumazet
2012-05-26 4:17 ` Eric Dumazet
2012-05-27 3:54 ` Arun Sharma
2012-05-27 13:18 ` Eric Dumazet
-- strict thread matches above, loose matches on Subject: below --
2012-05-30 23:50 Lubashev, Igor
2012-06-04 19:04 ` Lubashev, Igor
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