From: David Laight <David.Laight@ACULAB.COM>
To: 'Ronny Meeus' <ronny.meeus@gmail.com>,
Eric Dumazet <erdnetdev@gmail.com>
Cc: netdev <netdev@vger.kernel.org>
Subject: RE: TCP socket send return EAGAIN unexpectedly when sending small fragments
Date: Fri, 10 Jun 2022 15:21:30 +0000 [thread overview]
Message-ID: <0e02ea2593204cd9805c6ed4b7f46c98@AcuMS.aculab.com> (raw)
In-Reply-To: <CAMJ=MEdctBNSihixym1ZO9RVaCa_FpTQ8e4xFukz3eN8F1P8bQ@mail.gmail.com>
...
> If the 5 queued packets on the sending side would cause the EAGAIN
> issue, the real question maybe is why the receiving side is not
> sending the ACK within the 10ms while for earlier messages the ACK is
> sent much sooner.
Have you disabled Nagle (TCP_NODELAY) ?
Nagle only really works for bulk data transfer (large sends)
and interactive sessions (command - response).
For nearly everything else it adds unwanted 100ms delays.
David
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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2022-06-10 15:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-10 12:48 TCP socket send return EAGAIN unexpectedly when sending small fragments Ronny Meeus
2022-06-10 14:21 ` Eric Dumazet
2022-06-10 15:16 ` Ronny Meeus
2022-06-10 15:21 ` David Laight [this message]
2022-06-10 17:16 ` Ronny Meeus
2022-06-10 17:42 ` Willy Tarreau
2022-06-10 18:14 ` Ronny Meeus
2022-06-10 17:46 ` Eric Dumazet
2022-06-10 18:21 ` Ronny Meeus
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