From b15441df1cc5f18a534ba031557095beb9db563d Mon Sep 17 00:00:00 2001 From: Sarah Hoffmann Date: Sat, 17 Nov 2018 15:37:46 +0100 Subject: [PATCH] Document the mmap requirement for flatnode files Fixes #877. --- docs/admin/Faq.md | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/docs/admin/Faq.md b/docs/admin/Faq.md index a0e1cafe..1e874c78 100644 --- a/docs/admin/Faq.md +++ b/docs/admin/Faq.md @@ -71,6 +71,15 @@ and recompile (`cmake .. && make`). Reinstall the nominatim functions with `setup.php --create--functions` and check for any errors, e.g. a missing `nominatim.so` file. +### I see the error: "ERROR: mmap (remap) failed" + +This may be a simple out-of-memory error. Try reducing the memory used +for `--osm2pgsql-cache`. Also make sure that overcommitting memory is +allowed: `cat /proc/sys/vm/overcommit_memory` should print 0 or 1. + +If you are using a flatnode file, then it may also be that the underlying +filesystem does not fully support 'mmap'. A notable candidate is virtualbox's +vboxfs. ### The website shows: "Could not get word tokens" -- 2.43.2