I am testing the following idea to refresh sporadically changed read-only data cache. The parent modperl process first cache a data hash %foo. Now all the child modperl processes will inherit this data hash. We install a signal handler in the parent process to reload the hash when a USR2 signal is received. To refresh the cached data %foo. First I obtain a list of child processes. Then I send a USR2 signal to the parent process to reload the data. Then I send USR1 signal to the list of child processes already recorded to make them gracefully exit. At this point, all the memory about the old data should be gone. So now the parent modperl process has newly freshed data. The future children should inherit this changed data. But I found this not to be the case. The data in the parent process is indeed changed. But the newly spawned children still retains the old data hash. At least that is what my preliminary testing shows. My question is where does the logic break in the above scenario? I tried this on a solaris box. Thanks for any info. Richard
