> Date: Fri, 5 Jun 2015 11:15:38 +0100 > From: Stuart Henderson <st...@openbsd.org> > > net/samba4 is in the ports tree but not currently enabled in the build, > we're still only using samba 3.x for various reasons, but unfortunately > samba 3 is getting decreasingly useful as more Windows setups move to > newer versions. > > One of the issues is that startup of samba4 on OpenBSD is very slow > indeed, seemingly before control is transferred to the program. From > the LD_DEBUG output with timestamps (using the very handy ts(1) from > "moreutils"): > > # LD_DEBUG=1 smbd -D 2>&1 | ts %.s > <..snip..> > 1433498513.546306 examining: '/usr/local/lib/libhogweed.so.1.1' > 1433498513.546323 loading: libnettle.so.1.2 required by > /usr/local/lib/libhogweed.so.1.1 > 1433498513.546339 loading: libgmp.so.9.0 required by > /usr/local/lib/libhogweed.so.1.1 > 1433498513.546354 linking dep /usr/local/lib/libnettle.so.1.2 as child of > /usr/local/lib/libhogweed.so.1.1 > 1433498513.546370 linking dep /usr/local/lib/libgmp.so.9.0 as child of > /usr/local/lib/libhogweed.so.1.1 > 1433498513.546386 examining: '/usr/local/lib/libgmp.so.9.0' > 1433498584.125659 flags /usr/libexec/ld.so = 0x0 > 1433498584.125783 obj /usr/libexec/ld.so has smbd as head > 1433498584.149165 relocation took 0.023504 > 1433498584.149215 Start End Type Open Ref > GrpRef Name > 1433498584.149249 000004bec6500000 000004bec6910000 exe 1 0 0 > smbd > 1433498584.149272 000004c19b74e000 000004c19bb60000 rlib 0 107 0 > /usr/lib/libpthread.so.19.0 > 1433498584.149293 000004c18f3df000 000004c18f812000 rlib 0 75 0 > /usr/local/lib/libsamba-util.so.0.0 > <..snip..> > > - a 74 second delay after "examining: '/usr/local/lib/libgmp.so.9.0'". > Does anyone have suggestions for finding out what's going on here? > Full text snipped from the above is at http://junkpile.org/samba4-lddebug.txt
My first guess would have been that it is spending a lot of time on initial relocations. But the line: 1433498584.149165 relocation took 0.023504 pretty much rules that out. My suggestion would be to add a few more DL_DEB() statements inside of ld.so/loader.c:_dl_boot(), starting just after the _dl_load_dep_libs() call in that function and try to narrow it down.
