Well ... without knowing more about your system, I can only guess at the
reason. But here are some possibilities.
1. If you have the typical system configuration, your Web server (httpd) is
running and even has spare processes running (you can check this with "ps
-ax |grep http"), while telnet and ftp are managed through inetd . This
difference *by itself* won't account for the large speed difference you are
seeing, but it will explain a small difference. (ping, BTW, is in kernel
code; it should be immediate.) But if your system *also* is low on memory or
has a slow hard disk, that could slow the inetd-managed processes down even
more. Try running "free" to see if you have enough real (not swap) memory to
start up new processes easily.
2. Your system also probably uses tcpd to enforce access restrictions on
inetd-managed services. Depending on how you have tcpd configured (read
"man 5 hosts_access" for details here), it too can slow things down.
3. In particular, if you have tcpd configured to verify host identities via
DNS, a bad DNS configuration (or simply a slow nameserver) could be causing
your problem.
To say more, I'd need to know the details of your hardware, your inetd
configuration, typical system load, how the host gets DNS information, and
your tcpd configuration.
BTW, I did confirm your observations - http access took 10 seconds, telnet
70 seconds. I also tried to telnet to port 25 (smtp - answered by sendmail)
and it took about 30 seconds to respond. This too seems slow. Are you
running sendmail through inetd (not usual, but not all that odd)? If not,
this suggests that system load or name service may be the problem, rather
than inetd-specific configuration problems. But even here, the details matter.
At 10:30 PM 6/7/99 -0600, Ricardo Denis wrote:
>i have a computer connected to the internet 24 hours a day. why is it that
>if i try to telnet or ftp to it, it takes about 1 minute and 40 seconds for
>the computer to respond whereas if i http to it (or ping it) it responds
>almost instantaneously? if you�d like to try and see what i mean then the
>ip is 206.48.106.72. i run SuSE 5.3. thanks for any help.
------------------------------------"Never tell me the odds!"---
Ray Olszewski -- Han Solo
762 Garland Drive
Palo Alto, CA 94303-3603
650.328.4219 voice [EMAIL PROTECTED]
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