Rocksolid Light

Welcome to Rocksolid Light

mail  files  register  newsreader  groups  login

Message-ID:  

As Will Rogers would have said, "There is no such things as a free variable."

computers / alt.bbs.synchronet / Re: kermit protocol in syncterm

SubjectAuthor
* kermit protocol in synctermfusion
`- kermit protocol in synctermDigital Man

1
Re: kermit protocol in syncterm

<64DFE062.50288.sync@vert.synchro.net>

  copy mid

https://news.novabbs.org/computers/article-flat.php?id=19012&group=alt.bbs.synchronet#19012

  copy link   Newsgroups: alt.bbs.synchronet
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!diablo1.usenet.blueworldhosting.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!fx14.iad.POSTED!not-for-mail
From: fusion@CFBBS.remove-1114-this (fusion)
Subject: Re: kermit protocol in syncterm
Message-ID: <64DFE062.50288.sync@vert.synchro.net>
X-Comment-To: Digital Man
Newsgroups: alt.bbs.synchronet
X-FTN-PID: Synchronet 3.20a-Linux master/99e8c77ca Jul 24 2023 GCC 12.2.0
X-FTN-MSGID: 50288.sync@1:103/705 2945dad2
X-FTN-CHRS: ASCII 1
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
X-Gateway: vert.synchro.net [Synchronet 3.20a-Linux NewsLink 1.114]
Lines: 17
X-Complaints-To: https://www.astraweb.com/aup
NNTP-Posting-Date: Fri, 18 Aug 2023 21:19:30 UTC
Date: Fri, 18 Aug 2023 17:19:00 +0000
X-Received-Bytes: 1624
 by: fusion - Fri, 18 Aug 2023 17:19 UTC

To: Digital Man
On 18 Aug 2023, Digital Man said the following...
DM> Ymodem-G has almost 0 overhead, so (without compression or other
DM> cheats), it's really not possible for Kermit (the protocol) to be faster
DM> than Ymodem-G. And Zmodem is only a little slower than Ymodem-G.

i can't replicate this. i get 1.12MB/s sexyz to sexyz (syncterm) with zmodem and 0.86MB/s with ymodem-g sexyz to sexyz. certainly an improvement over mystic's but something is a bottleneck.

this is on an i7-3520M .. no spring chicken for sure. both transfers used 38-50% cpu during the transfer. (for comparison a 65MB/s transfer to the same machine uses 8%)

i can totally see gkermit outperforming ymodem-g.

--- Mystic BBS v1.12 A47 2021/12/25 (Windows/32)
* Origin: cold fusion - cfbbs.net - grand rapids, mi
--- Synchronet 3.20a-Linux NewsLink 1.114
* Vertrauen - Riverside County, California - telnet://vert.synchro.net

Re: kermit protocol in syncterm

<64E001EC.50291.sync@vert.synchro.net>

  copy mid

https://news.novabbs.org/computers/article-flat.php?id=19015&group=alt.bbs.synchronet#19015

  copy link   Newsgroups: alt.bbs.synchronet
Path: i2pn2.org!i2pn.org!usenet.blueworldhosting.com!diablo1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!fx17.iad.POSTED!not-for-mail
From: digital.man@vert.synchro.net.remove-6k-this (Digital Man)
Subject: Re: kermit protocol in syncterm
Message-ID: <64E001EC.50291.sync@vert.synchro.net>
X-Comment-To: fusion
Organization: Vertrauen
Newsgroups: alt.bbs.synchronet
In-Reply-To: <64DFE062.50288.sync@vert.synchro.net>
References: <64DFE062.50288.sync@vert.synchro.net>
X-FTN-PID: Synchronet 3.20a-Linux master/99e8c77ca Jul 24 2023 GCC 12.2.0
X-FTN-MSGID: 50291.sync@1:103/705 2945fc5f
X-FTN-REPLY: 50288.sync@1:103/705 2945dad2
Content-Type: text/plain; charset=IBM437
Content-Transfer-Encoding: 8bit
X-Gateway: vert.synchro.net [Synchronet 3.20a-Linux NewsLink 1.114]
Lines: 29
X-Complaints-To: https://www.astraweb.com/aup
NNTP-Posting-Date: Fri, 18 Aug 2023 23:42:38 UTC
Date: Fri, 18 Aug 2023 16:42:36 -0700
X-Received-Bytes: 2300
 by: Digital Man - Fri, 18 Aug 2023 23:42 UTC

To: fusion
Re: Re: kermit protocol in syncterm
By: fusion to Digital Man on Fri Aug 18 2023 05:19 pm

> On 18 Aug 2023, Digital Man said the following...
>
> DM> Ymodem-G has almost 0 overhead, so (without compression or other
> DM> cheats), it's really not possible for Kermit (the protocol) to be
> DM> faster than Ymodem-G. And Zmodem is only a little slower than Ymodem-G.
>
> i can't replicate this. i get 1.12MB/s sexyz to sexyz (syncterm) with zmodem
> and 0.86MB/s with ymodem-g sexyz to sexyz. certainly an improvement over
> mystic's but something is a bottleneck.
>
> this is on an i7-3520M .. no spring chicken for sure. both transfers used
> 38-50% cpu during the transfer. (for comparison a 65MB/s transfer to the
> same machine uses 8%)
>
> i can totally see gkermit outperforming ymodem-g.

YMODEM-G is a protocl. gkermit is a terminal transfer protocol driver. You're comparing apples and oranges. If you want to compare X/Y/ZMODEM protocol performance, you should be comparing with the reference X/Y/ZMODEM protocol implementation (rz/sz).
--
digital man (rob)

Rush quote #30:
You can do a lot in a lifetime if you don't burn out too fast
Norco, CA WX: 88.7°F, 33.0% humidity, 10 mph E wind, 0.00 inches rain/24hrs
--- Synchronet 3.20a-Linux NewsLink 1.114
* Vertrauen - Riverside County, California - telnet://vert.synchro.net

computers / alt.bbs.synchronet / Re: kermit protocol in syncterm

1
server_pubkey.txt

rocksolid light 0.9.81
clearnet tor