MulticastSocket.send blocks for more than 28 secs on solaris

[Suresh]

Hi,

I am sorry if this question has been raised earlier, but I could not find
any convencing answer till now.

I have a program that tries to send UDP packets (Multicast) as fast as
possible. But on my solaris system the "send" function somtimes blocks for
nearly 28-30 secs. This never happens on my linux system, (the send usually
takes 1 or 2 msec on linux system).

I have the following configuration:

Solaris:

$ uname -a
SunOS solaris 5.8 Generic_117350-30 sun4u sparc SUNW,Sun-Fire-V210 Solaris
$ java -version
java version "1.5.0_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
Java HotSpot(TM) Server VM (build 1.5.0_05-b05, mixed mode)


Linux:
$ uname -a
Linux linux 2.6.9-22.0.1.EL #1 Thu Oct 27 12:26:11 CDT 2005 i686 i686 i386
GNU/Linux
$ java -version
java version "1.5.0_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
Java HotSpot(TM) Client VM (build 1.5.0_05-b05, mixed mode, sharing)

The datagram packet size is 1442 bytes.

Is this a normal behaviour or am I doing something wrong ? Is there any
workarround to avoid these blocks ?


Thanks for your help,
Suresh.

 

[Rodrigo Zechin]

I have experienced some problems like that in the past with some
hardwares (the OS was linux, but I don't think it was related with
that).
I would make some tests with Solaris on other machines if I were you.

Zechin

 

[Suresh]

I would make some tests with Solaris on other machines if I were you.

I dont have too many machines to test.

 

[Joan]

I dont have too many machines to test.

can you try with smaller packet size?