Test system ----------- 2x XEON 5550 (8 cores total), 2.66GHz, hyper-threading disabled, turbo boost disabled 24GB RAM 4x128GB cheapo ssd on RAID-0 controller w/ 256 MB cache LINUX 2.6.28-18-generic SMP 64 bits repositories on ext4 export to tempfs Repository mirrors used ----------------------- tsvn : mirror of tortoisesvn.tigris.org repository, non-sharded, non-packed SVN 1.5 format export of /trunk@HEAD tsvn_packed: mirror of tortoisesvn.tigris.org repository, packed SVN 1.6 format export of /trunk@HEAD apache.org : mirror of apache.org repository, packed SVN 1.6 format export of /subversion/trunk@HEAD kde.org : mirror of kde.org repository, packed SVN 1.6 format export of /trunk@HEAD criterion tsvn tsvn_packed apache.org kde.org repo size 5.3G 4.8G 30.4G 58.4G revisions 18,937 18,937 943,322 1,125,690 export items 3,840 3,840 1,941 399,419 export size 81M 81M 38M 8.4G Export using the old server --------------------------- ~/subversion-1.6.9/subversion/svnserve/svnserve -d -T -r /mnt/archive/svnroot/ time svn-1.6.9 export --ignore-externals -q svn://localhost/$TOEXPORT /dev/shm/t 1st run tsvn tsvn_packed apache.org kde.org real 0m10.242s 0m9.774s 0m7.473s 20m4.354s user 0m2.280s 0m2.372s 0m1.104s 2m39.870s sys 0m0.428s 0m0.424s 0m0.236s 0m35.590s 2nd run tsvn tsvn_packed apache.org kde.org real 0m5.494s 0m4.907s 0m3.045s 11m4.798s user 0m2.416s 0m2.484s 0m1.136s 2m45.506s sys 0m0.352s 0m0.328s 0m0.216s 0m37.718s Export using the new server + patches, wire-compression off ----------------------------------------------------------- ~/subversion-1.7.patched/subversion/svnserve/svnserve -d -T -r /mnt/archive/svnroot/ time svn-1.6.9 export --ignore-externals -q svn://localhost/$TOEXPORT /dev/shm/t 1st run tsvn tsvn_packed apache.org kde.org real 0m6.453s 0m5.817s 0m6.119s 13m22.418s user 0m1.572s 0m1.680s 0m0.784s 1m42.710s sys 0m0.544s 0m0.572s 0m0.252s 0m40.351s 2nd run tsvn tsvn_packed apache.org kde.org real 0m2.520s 0m2.092s 0m1.792s 5m45.944s user 0m1.360s 0m1.228s 0m0.796s 1m38.662s sys 0m0.400s 0m0.392s 0m0.224s 0m36.386s Resource usage -------------- These numbers are for the patched server criterion tsvn tsvn_packed apache.org kde.org cache usage 97M 106M 61M 10.0G Typical CPU load during 1st KDE export (100% == 1 core) ~70 .. 100% CPU load (svnserve) ~20 .. 40% CPU load (svn) ~10 .. 20% sys Typical CPU load during 2nd KDE export (100% == 1 core) ~100% CPU load (svnserve) ~20 .. 70% CPU load (svn) ~15 .. 30% sys