From: Fan Du <fengyuleidian0615@gmail.com>
To: yzhu1 <Yanjun.Zhu@windriver.com>
Cc: Fan Du <fan.du@intel.com>, davem@davemloft.net, netdev@vger.kernel.org
Subject: Re: [PATCH net-next 1/3] ipv4: Raise tcp PMTU probe mss base size
Date: Mon, 16 Feb 2015 13:15:54 +0800 [thread overview]
Message-ID: <54E17D0A.5050604@gmail.com> (raw)
In-Reply-To: <54DDC8B1.1050307@windriver.com>
于 2015年02月13日 17:49, yzhu1 写道:
> backward compatible? :-D
yes, it will be auto tuned back in black hole detecting path.
Also user could adjust the base size through /proc/sys/net/ipv4/tcp_base_mss
for optimal configuration.
> Zhu Yanjun
> On 02/13/2015 04:16 PM, Fan Du wrote:
>> Quotes from RFC4821 7.2. Selecting Initial Values
>>
>> It is RECOMMENDED that search_low be initially set to an MTU size
>> that is likely to work over a very wide range of environments. Given
>> today's technologies, a value of 1024 bytes is probably safe enough.
>> The initial value for search_low SHOULD be configurable.
>>
>> Moreover, set a small value will introduce extra time for the search
>> to converge. So set the initial probe base mss size to 1024 Bytes.
>>
>> Signed-off-by: Fan Du <fan.du@intel.com>
>> ---
next prev parent reply other threads:[~2015-02-16 5:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-13 8:16 [PATCH net-next 0/3] Small fix for TCP PMTU Fan Du
2015-02-13 8:16 ` [PATCH net-next 1/3] ipv4: Raise tcp PMTU probe mss base size Fan Du
2015-02-13 9:49 ` yzhu1
2015-02-16 5:15 ` Fan Du [this message]
2015-02-13 8:16 ` [PATCH net-next 2/3] ipv4: Use binary search to choose tcp PMTU probe_size Fan Du
2015-02-13 17:52 ` John Heffner
2015-02-16 5:27 ` Fan Du
2015-02-16 23:59 ` John Heffner
2015-02-13 8:16 ` [PATCH net-next 3/3] ipv4: Create probe timer for tcp PMTU as per RFC4821 Fan Du
2015-02-13 9:59 ` Ying Xue
2015-02-16 5:28 ` Fan Du
2015-02-13 12:31 ` Eric Dumazet
2015-02-16 5:38 ` Fan Du
2015-02-16 12:19 ` Eric Dumazet
2015-02-26 3:49 ` [PATCHv2 net-next 0/4] Small fix for TCP PMTU Fan Du
2015-02-26 3:49 ` [PATCHv2 net-next 1/4] ipv4: Raise tcp PMTU probe mss base size Fan Du
2015-02-26 3:49 ` [PATCHv2 net-next 2/4] ipv4: Use binary search to choose tcp PMTU probe_size Fan Du
2015-02-27 22:17 ` David Miller
2015-02-26 3:49 ` [PATCHv2 net-next 3/4] ipv4: shrink current mss for tcp PMTU blackhole detection Fan Du
2015-02-26 3:49 ` [PATCHv2 net-next 4/4] ipv4: Create probe timer for tcp PMTU as per RFC4821 Fan Du
2015-02-26 4:19 ` Eric Dumazet
2015-02-26 6:24 ` Fan Du
2015-02-26 13:40 ` [PATCHv2 net-next 0/4] Small fix for TCP PMTU David Laight
2015-02-27 5:37 ` Fan Du
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