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Russia mirror of PhysNet: one year experience and some statistics

This article discusses the experience of running the Russia Mirror of PhysNet and provides statistics on the number of requests per week, month, and from different top-level domains in 2001.

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Russia mirror of PhysNet: one year experience and some statistics

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  1. Russia 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 Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  2. -2- First Steps • Installation 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 Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  3. -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Severiens (perl) highlights: • + simple in using • + quite fast • - integrity not checked (corrupted file would never been replaced by the correct one) Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  4. -4- Technical comments on mirroring -II • 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 length • - ftp-protocol Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  5. -5- Technical comments on mirroring -III • 2) rsync-2.4.6 by Andrew Tridgell, Paul Mackerras (binary): • + check-out of the date and length • + check-out of checksum • - needs a special demon installed at master site Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  6. -6- Technical comments on mirroring -IV • 3) wget-1.5.4 by Hrvoje Nikavsic (binary): • + check-out of the date and length • + 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 ... Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  7. -7- Statistics -1 Number of requests per week in year 2001 Week Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  8. -8- Statistics -2 Number of requests per month in year 2001 Month Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  9. -9- Statistics -3 Number of requests from the Top Level Domains in 2001 Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  10. 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 [not listed: 19 sites] -10- Statistics -4: Referring sites Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

  11. -11- Statistics -5 • More statistics available • Statistics collected by analog-5.03 program (written by Stephen Turner) • … Russia mirror of PhysNet SINN01, Oldenburg, 5-7 December 2001

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