1. one year experience and some statistics Russian mirror of PhysNet: one year experience and some statistics Serge Krashakov sakr@chg.ru Landau Institute for Theoretical Physics, Russian Academy of Sciences co-contributor Lev Shchur

2. First Steps Installation PhysNet mirror at www.chg.ru (server of the Chg-FREEnet - network of Scientific Center of Russian Academy of Sciences in Chernogolovka) - 11 January 2001 Daily Mirroring - 5.30 AM from physnet.uni- oldenburg.de using bildmirror.pl by Thomas Severiens

3. Technical comments on mirroring - I bildmirror.pl by Thomas Severiens (perl) highlights: + simple in using + quite fast - integrity not checked (corrupted file would never been replaced by the correct one )

4. Technical comments on mirroring -II ftp I have experience running since 1993 ftp.chg.ru (539.9 GB of public domain software) ftp-server and use: 1) mirror-2.9 by Lee McLaughlin (perl) + relatively simple + check-out of the date and size - ftp-protocol

5. Technical comments on mirroring -III 2) rsync-2.4.6 by Andrew Tridgell, Paul Mackerras (binary): + check-out of the date and size + check-out of checksum - needs in a special daemon installed at master site

6. Technical comments on mirroring -IV 3) wget-1.5.4 by Hrvoje Nikavsic (binary): + check-out of the date and size + proxy (on the net-path) is not a problem - copy and replace files but never delete ones which deleted on the master site there are more mirror tools but I do not have big exprience with them to discuss...

7. Statistics -1 Since 11 January till 27 November 2001 there are: Successful requests: 29610 Average successful requests per day: 92 Successful requests for pages: 9943 Average successful requests for pages per day: 31 Distinct files requested: 217 Distinct hosts served: 1096 Data transferred: 257.421 Mbytes Average data transferred per day: 824.370 kbytes

8. Statistics - 2 Week Number of requests per week in year 2001

9. Statistics - 3 Month Number of requests per month in year 2001

10. Statistics - 4 Number of requests from different Top Level Domains in 2001

11. Statistics - 5: Referring sites 227 http://www.chg.ru/ 220 http://yandex.ru/ 201 http://www.yandex.ru/ 117 http://physnet.uni-oldenburg.de/ 116 http://itp.ac.ru/ 81 http://www.itp.ac.ru/ 58 http://pcmath126.unice.fr/ 47 http://search.rambler.ru/ 28 http://www.goto.com/ 19 http://www.google.com/ 18 http://www.overture.com/ 16 http://sm.aport.ru/ 15 http://translate.google.com/ 11 http://www.ya.ru/ 10 http://physnet.physik.uni-oldenburg.de/ 6 http://www.eps.org/ 5 http://google.yahoo.com/ 5 http://helios.physics.utoronto.ca/ 4 http://ie5.rambler.ru/ 4 http://ya.ru/ 4 http://physnet.eprints.org/ 4 http://www.ask.com/ 4 http://www.google.de/ 3 http://www.physik.uni-oldenburg.de/ 3 http://www.phys.vt.edu/ 3 http://s3s.mailutilities.com/ 3 http://www.strato.de/ 2 http://ins.uni-oldenburg.de/ 2 http://s2s.mailutilities.com/ 23 other 19 sites

12. Statistics - 6 More statistics available Statistics analysed by analog-5.03 program (written by Stephen Turner) …