1) I know DB takes time to load, how will this help me? 2) /dev/zero took on the old machine 11second, on the new machine 6seconds - doesn't really help as I already knew the new HW is faster on disk - this through hdparm's speed testing
3) no entropy is access DB is a wrapper around DBI, nothing more... in any case both running of that entropy returned almost immediately 2009/9/9 Arie Skliarouk <sklia...@gmail.com> > Try to run the following on both machines: > > #!/usr/bin/perl > use Time::HiRes; > ($seconds, $microseconds) = Time::HiRes::gettimeofday; > print "Start: $seconds.$microseconds\n"; > > use DB; > > ($seconds, $microseconds) = Time::HiRes::gettimeofday; > print "loaded DB: $seconds.$microseconds\n"; > > > Besides "use DB" stick couple more libraries and print the timestamp after > each one. > > Test write speed of disks: > time (dd if=/dev/zero of=/tmp/abc bs=1M count=500 && sync) > > One of the things the "use DB" does it to load several bytes of entropy > from /dev/random. If the newer machine has much activity, the /dev/random > will not block. Idle machine might require some time to gather entropy. Test > the entropy as follows: > time dd if=/dev/random of=/dev/null bs=100000 count=1 > > -- > Arie > > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il > >
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