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ae8064ac32
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John Heffner ae8064ac32 [TCP]: Bound TSO defer time 
This patch limits the amount of time you will defer sending a TSO segment
to less than two clock ticks, or the time between two acks, whichever is
longer.

On slow links, deferring causes significant bursts.  See attached plots,
which show RTT through a 1 Mbps link with a 100 ms RTT and ~100 ms queue
for (a) non-TSO, (b) currnet TSO, and (c) patched TSO.  This burstiness
causes significant jitter, tends to overflow queues early (bad for short
queues), and makes delay-based congestion control more difficult.

Deferring by a couple clock ticks I believe will have a relatively small
impact on performance.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-18 20:36:48 -07:00
..
acpi ACPI: Processor native C-states using MWAIT 2006-10-14 00:35:39 -04:00
asm-alpha [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
asm-arm [ARM] 3890/1: [Jornada7xx] Addition of MCU commands into jornada720.h 2006-10-14 16:02:00 +01:00
asm-arm26 fix file specification in comments 2006-10-03 23:01:26 +02:00
asm-avr32 [PATCH] IRQ: Fix AVR32 breakage 2006-10-11 11:14:14 -07:00
asm-cris [PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references 2006-10-02 07:57:23 -07:00
asm-frv [PATCH] FRV: Use the correct preemption primitives in kmap_atomic() and co 2006-10-16 08:32:29 -07:00
asm-generic [PATCH] sched: likely profiling 2006-10-11 11:14:22 -07:00
asm-h8300 [PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references 2006-10-02 07:57:23 -07:00
asm-i386 ACPI: Processor native C-states using MWAIT 2006-10-14 00:35:39 -04:00
asm-ia64 [IA64] remove unused PAL_CALL_IC_OFF 2006-10-17 14:53:52 -07:00
asm-m32r [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
asm-m68k [PATCH] sun3_ioremap() prototype 2006-10-15 11:00:58 -07:00
asm-m68knommu [PATCH] m68knommu: sync syscalls with m68k 2006-10-13 08:35:39 -07:00
asm-mips Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2006-10-11 15:30:14 -07:00
asm-parisc [PARISC] pdc_init no longer exists 2006-10-07 05:22:30 -06:00
asm-powerpc [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
asm-ppc [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
asm-s390 [S390] Fix pte type checking. 2006-10-18 18:30:51 +02:00
asm-sh Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6 2006-10-12 08:33:23 -07:00
asm-sh64 [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
asm-sparc IRQ: Use the new typedef for interrupt handler function pointers 2006-10-09 12:19:47 +01:00
asm-sparc64 [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
asm-um [PATCH] um: irq changes break build 2006-10-06 08:53:42 -07:00
asm-v850 [PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references 2006-10-02 07:57:23 -07:00
asm-x86_64 ACPI: Processor native C-states using MWAIT 2006-10-14 00:35:39 -04:00
asm-xtensa fix file specification in comments 2006-10-03 23:01:26 +02:00
crypto
keys
linux [TCP]: Bound TSO defer time 2006-10-18 20:36:48 -07:00
math-emu
media V4L/DVB (4666): Ensure the WM8775 driver is loaded generically for any board. 2006-10-03 15:13:48 -03:00
mtd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-10-01 17:55:53 +01:00
net [IPv4] fib: Remove unused fib_config members 2006-10-18 20:26:36 -07:00
pcmcia
rdma
rxrpc
scsi Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2006-10-04 18:57:35 -07:00
sound [ALSA] version 1.0.13 2006-10-06 20:28:26 +02:00
video fix file specification in comments 2006-10-03 23:01:26 +02:00
Kbuild