ea35e47228
Changing the client to leave its socket as blocking during the connect doesn't solve the problem by itself - you also have to introduce a sleep delay once the backlog is hit to avoid simply machine-gunning your way thru retries. This gets somewhat difficult to adjust as you don't want to unnecessarily prolong startup time. We've solved this before by adding a listening thread that simply reaps accepts and shoves them into the event library for subsequent processing. This would resolve the problem, but meant yet another daemon-level thread. So I centralized the listening thread support and let multiple elements register listeners on it. Thus, each daemon now has a single listening thread that reaps accepts from multiple sources - for now, the orte/pmix server and the oob/usock support are using it. I'll add in the oob/tcp component later. This still didn't fully resolve the SMP problem, especially on coprocessor cards (e.g., KNC). Removing the shared memory dstore support helped further improve the behavior - it looks like there is some kind of memory paging issue there that needs further understanding. Given that the shared memory support was about to be lost when I bring over the PMIx integration (until it is restored in that library), it seemed like a reasonable thing to just remove it at this point. |
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| .. | ||
| comm | ||
| dash_host | ||
| hostfile | ||
| attr.c | ||
| attr.h | ||
| context_fns.c | ||
| context_fns.h | ||
| error_strings.c | ||
| error_strings.h | ||
| help-regex.txt | ||
| hnp_contact.c | ||
| hnp_contact.h | ||
| listener.c | ||
| listener.h | ||
| Makefile.am | ||
| name_fns.c | ||
| name_fns.h | ||
| nidmap.c | ||
| nidmap.h | ||
| parse_options.c | ||
| parse_options.h | ||
| pre_condition_transports.c | ||
| pre_condition_transports.h | ||
| proc_info.c | ||
| proc_info.h | ||
| regex.c | ||
| regex.h | ||
| session_dir.c | ||
| session_dir.h | ||
| show_help.c | ||
| show_help.h | ||