Volker Schmelich, 22.08.2012 22:15: > Thank you for the tip regarding strace. From a first glance it looks like > server 2 loses time between "Writing spool header file" and "LOG: MAIN > unfrozen by root". Especially some fstat(), fsync(), close() call lines have > higher times displayed when using strace with the -r param. > > E.g. one close() shows 0.000644 on server 1 and the same close() on server 2 > shows 0.032874.
close() of file read or written to? Maybe you could put the strace outputs (-o /tmp/strace) on some webserver... > So my uneducated guess would be that ext4 is to blame. Is there a way to > temporarily make ext4 behave like ext3 and re-run the test? It should be possible to mount the volume as ext3 (unless a non-backwards-compatible ext4 feature was enabled, obviously). Or just create a new ext3 partition, copy your spool there and mount it over /var/spool/exim. There are some ext4 options that may change performance, e.g. noauto_da_alloc, nobarrier, journal_data_writeback. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
