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Re: BerkeleyDB vs. Linux file system

by thraxil (Prior)
on Mar 18, 2003 at 16:58 UTC ( [id://244076]=note: print w/replies, xml ) Need Help??


in reply to BerkeleyDB vs. Linux file system

PIII 1GHz, ReiserFS 3.6.25 (compiled into the kernel) on a 10,000rpm SCSI drive, linux 2.4.19 (gentoo sources). $BerkeleyDB::db_version == 3.2, $BerkeleyDB::VERSION == 0.20

Benchmark: timing 10 iterations of berkeley write, file write... berkeley write: 7 wallclock secs ( 4.01 usr + 3.24 sys = 7.25 CPU) +@ 1.38/s (n=10) file write: 15 wallclock secs ( 3.00 usr + 10.51 sys = 13.51 CPU) @ 0 +.74/s (n=10) s/iter file write berkeley write file write 1.35 -- -46% berkeley write 0.725 86% -- Benchmark: timing 10 iterations of berkeley read, file read... berkeley read: 2 wallclock secs ( 1.07 usr + 1.21 sys = 2.28 CPU) @ + 4.39/s (n=10) file read: 1 wallclock secs ( 0.50 usr + 0.61 sys = 1.11 CPU) @ 9 +.01/s (n=10) Rate berkeley read file read berkeley read 4.39/s -- -51% file read 9.01/s 105% --

then i changed the 8000's to 800 and the 10's to 100 to see how it would do with smaller files:

Benchmark: timing 100 iterations of berkeley write, file write... berkeley write: 11 wallclock secs ( 4.83 usr + 5.31 sys = 10.14 CPU) +@ 9.86/s (n=100) file write: 68 wallclock secs ( 5.81 usr + 56.34 sys = 62.15 CPU) @ 1 +.61/s (n=100) Rate file write berkeley write file write 1.61/s -- -84% berkeley write 9.86/s 513% -- Benchmark: timing 100 iterations of berkeley read, file read... berkeley read: 5 wallclock secs ( 3.49 usr + 2.11 sys = 5.60 CPU) @ + 17.86/s (n=100) file read: 4 wallclock secs ( 2.69 usr + 1.33 sys = 4.02 CPU) @ 24 +.88/s (n=100) Rate berkeley read file read berkeley read 17.9/s -- -28% file read 24.9/s 39% --

anders pearson

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Re: Re: BerkeleyDB vs. Linux file system
by perrin (Chancellor) on Mar 18, 2003 at 18:27 UTC
    Thanks. Looks like Reiser doesn't make much of a difference for this kind of thing.

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