Re: Possible TCP Problem with RH6.2 talking to Solaris2.6/2.7 (fwd)

From: shane (shane@bratnet.net)
Date: Thu May 04 2000 - 09:50:28 EST


Im trying the bigger size on linux now.
>ncftp /pub > bin
>ncftp /pub > mget linux*
>linux-2.3.99-pre5.tar.gz: 19.13 MB 1.76MB/s
>ncftp /pub >

Not Much Difference :(

FYI : These are the tweeks on the solaris side
# tcp
ndd -set /dev/tcp tcp_conn_req_max_q 4096
ndd -set /dev/tcp tcp_conn_req_max_q0 4096
ndd -set /dev/tcp tcp_rexmit_interval_min 2000
ndd -set /dev/tcp tcp_ip_abort_interval 600000
ndd -set /dev/tcp tcp_deferred_ack_interval 200

# This is a Solaris 7 Thing
#ndd -set /dev/tcp tcp_time_wait_interval 60000

ndd -set /dev/tcp tcp_xmit_hiwat 65536
ndd -set /dev/tcp tcp_recv_hiwat 65536
ndd -set /dev/tcp tcp_cwnd_max 262144

#ndd -set /dev/tcp tcp_xmit_hiwat 32768
#ndd -set /dev/tcp tcp_recv_hiwat 32768
#ndd -set /dev/tcp tcp_cwnd_max 32768

# Commented out by shane
ndd -set /dev/tcp tcp_slow_start_initial 2

ndd -set /dev/tcp tcp_mss_def 1460

# udp
ndd -set /dev/udp udp_recv_hiwat 32768
ndd -set /dev/udp udp_xmit_hiwat 32768
     

On 4 May 2000, Jes Sorensen wrote:

> >>>>> "Shane" == shane <shane@bratnet.net> writes:
>
> Shane> Well my linux rmem_max is set to 64K, why should I make this
> Shane> more than 64K, that is when the maxwindow size is on the
> Shane> solaris side Right?
>
> It's the socket buffer limit != the window size. The window size is
> normally set to half the socket buffer size.
>
> Shane> Anyway, what value do you think I should try in these
> Shane> registers?
>
> 262144 or something like that - *only* in the max fields, *not* in the
> default ones.
>
> Jes
>

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This archive was generated by hypermail 2b29 : Sun May 07 2000 - 21:00:14 EST