On 24/08/2019 1:41 am, Kirk Wolf wrote:
FWIW - debugging performance of forked Unix process startup/overhead is a mess - we had one customer who was seeing terrible performance when fork/execing tiny little shell processes that did practically nothing. It was only happening on one of their LPARs. The IBM Support center was involved for a really long time, and I don't know if they ever really figured out what was wrong.
It wasn't running under the bash shell was it? I noticed that bash has very significant overhead compared to the regular shell.
I did some investigation using SMF data, and just wrote it up here: https://www.blackhillsoftware.com/news/2019/08/27/comparing-bash-and-bin-sh-on-z-os/ Andrew Rowley Black Hill Software ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
