Bug 29101 - ability to turn off delayed TCP ACKs
ability to turn off delayed TCP ACKs
Status: CLOSED DEFERRED
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
7.1
i386 Linux
medium Severity medium
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Assigned To: David Miller
Brock Organ
: FutureFeature
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2001-02-23 12:48 EST by Alexander L. Belikoff
Modified: 2007-04-18 12:31 EDT (History)
0 users

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Doc Type: Enhancement
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Last Closed: 2001-02-23 15:41:34 EST
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Description Alexander L. Belikoff 2001-02-23 12:48:06 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.2.17-14smp i686; Nav)


It'd be extremely useful to have the kernel patched to allow disabling
delayed ACKs.
AFAIK there was at least one patch for 2.2 made by Andrea Arcangeli. That
one introduced a proc file /proc/sys/net/ipv4/tcp_disable_delacks for
controlling it.

On certain connections, "fast" ACKs allow to boost the performance
dramatically. For example, I'm dealing w/ the case where a connection w/
delayed ACKs gives a 0.7 sec. request turnaround time, whereas without
delayed ACKs the time drops to 0.2 sec.


Reproducible: Always
Steps to Reproduce:
1. n/a
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Comment 1 Arjan van de Ven 2001-03-21 12:41:06 EST
Not for the next release

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