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