From: Michal Nazarewicz <mina86@tlen.pl>
To: query <query.cdac@gmail.com>
Cc: linux-admin@vger.kernel.org
Subject: Re: Preventing SSH timeouts . Some clarification needed
Date: Tue, 08 Jun 2010 11:48:22 +0200 [thread overview]
Message-ID: <87typdg8ih.fsf@erwin.mina86.com> (raw)
In-Reply-To: <AANLkTikktppEGIvmtLBZxOzow2TykA4lU7scRV0qmRNR@mail.gmail.com> (query's message of "Tue, 8 Jun 2010 15:06:18 +0530")
[-- Attachment #1: Type: text/plain, Size: 1331 bytes --]
query <query.cdac@gmail.com> writes:
> We are seeing some dropped SSH connections because of which some of
> the process are failing . The main likely reason for the connection
> drops is that both the client and server remains 100% busy during
> a certain time interval and during that time interval we see those
> occassional connection closed by the server.
Are you sure it's not because of some NATing which may have a shorter
timeout then the one used by SSH's keep alive?
> Let's take a situation where the SSH client is 100% busy or idle and
> it had communicated to the server for around 300 seconds , then in
> this case if the above option is there , the server should send a
> message to the client after 300 secs. [...]
300 seconds is a very long time. I consider it unlikely that a process
that was idle for 300 seconds wouldn't quickly get a few CPU cycles just
to send a simple packet. I find it possible only when you use
non-standard schedule policies.
Hope it helps even that I haven't answered your original question.
--
Best regards, _ _
.o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michal "mina86" Nazarewicz (o o)
ooo +--<mina86-tlen.pl>--<jid:mina86-jabber.org>--ooO--(_)--Ooo--
[-- Attachment #2: Type: application/pgp-signature, Size: 197 bytes --]
next prev parent reply other threads:[~2010-06-08 9:48 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-08 9:36 Preventing SSH timeouts . Some clarification needed query
2010-06-08 9:48 ` Michal Nazarewicz [this message]
[not found] ` <AANLkTimTjSOmbj_ac4iiUMaHRuvp1-ljW-FUGAQbb1qt@mail.gmail.com>
[not found] ` <87k4q9g31y.fsf@erwin.mina86.com>
2010-06-08 15:10 ` query
2010-06-08 19:48 ` Michal Nazarewicz
2010-06-09 5:33 ` query
2010-06-08 10:39 ` Glynn Clements
2010-06-08 15:10 ` query
2010-06-08 16:19 ` Glynn Clements
2010-06-09 6:44 ` query
2010-06-09 8:15 ` Adam T. Bowen
2010-06-09 10:14 ` Glynn Clements
[not found] ` <AANLkTimDS_IalexVnOKtOuKN8fz13rFumHV8TrjEGtph@mail.gmail.com>
[not found] ` <19471.47290.566464.539451@cerise.gclements.plus.com>
2010-06-10 6:02 ` query
2010-06-10 13:03 ` Glynn Clements
2010-06-10 16:35 ` query
2010-06-10 23:52 ` Glynn Clements
2010-06-11 7:22 ` query
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87typdg8ih.fsf@erwin.mina86.com \
--to=mina86@tlen.pl \
--cc=linux-admin@vger.kernel.org \
--cc=query.cdac@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).