On 31 May 2012 22:38, Lionel Cons <[email protected]> wrote: > On 31 May 2012 21:48, Nemeth, Michael Kenneth (Mike) > <[email protected]> wrote: >> >> Hello, >> >> >> >> We are using ksh93u (2011-02-08) source compiled on rhel5.0 and we are >> experiencing intermittent connect reset errors with typical unix command >> pipelines. >> >> >> >> Example: >> >> >> >> min=`grep -v "^#" $infile | head -1 | nawk '{printf("%.3f\n",$3)}'` >> >> >> >> will produce error: >> >> >> >> grep: writing output: Connection reset by peer >> >> >> >> I reviewed all ast-user, ast-developers archives, and other forums I have >> come to the following topics: >> >> >> >> bug#9089: [1003.1(2008)/Issue 7 0000205]: Shell pipeline connection >> requirement too vague >> >> >> >> http://lists.gnu.org/archive/html/bug-coreutils/2011-07/msg00090.html >> >> http://lists.gnu.org/archive/html/bug-coreutils/2011-07/msg00089.html >> >> >> >> Is there a solution to this issue? > > Yes, get the Linux kernel to support I_PEEK on pipes and fifos like > Solaris does. AFAIK sockets are used because pipes on Linux do not > support I_PEEK, and without I_PEEK the shell would have to read the > streams byte by byte, i.e. one syscall per byte. Solaris allows I_PEEK > on pipes, fifos and sockets and gets a huge performance benefit from > that.
It seems SIGPIPE is send for ECONNRESET, too. My guess is to file a bug against the application in question to handle ECONNRESET like EPIPE. This is what most applications do in this case, we've encountered the issue before with grid-enabled shells which pass parts of a shell pipe chain to other machines through SCTP. Lionel _______________________________________________ ast-users mailing list [email protected] https://mailman.research.att.com/mailman/listinfo/ast-users
