> On 6 Apr 2024, at 23:44, Andres Freund <and...@anarazel.de> wrote:

> It might be useful to print a few lines, but the whole log files can be
> several megabytes worth of output.

The non-context aware fix would be to just print the last 1024 (or something)
bytes from the logfile:

diff --git a/src/test/perl/PostgreSQL/Test/Cluster.pm 
b/src/test/perl/PostgreSQL/Test/Cluster.pm
index 54e1008ae5..53d4751ffc 100644
--- a/src/test/perl/PostgreSQL/Test/Cluster.pm
+++ b/src/test/perl/PostgreSQL/Test/Cluster.pm
@@ -951,8 +951,8 @@ sub start
 
        if ($ret != 0)
        {
-               print "# pg_ctl start failed; logfile:\n";
-               print PostgreSQL::Test::Utils::slurp_file($self->logfile);
+               print "# pg_ctl start failed; logfile excerpt:\n";
+               print substr 
PostgreSQL::Test::Utils::slurp_file($self->logfile), -1024;
 
                # pg_ctl could have timed out, so check to see if there's a pid 
file;
                # otherwise our END block will fail to shut down the new 
postmaster.


Would that be a reasonable fix?

--
Daniel Gustafsson



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