Re^2: Problems with SDBM

Those are he most confusing graphs I've ever seen.

For example: both this & this are labelled "Write records per second", carry the same numbers on the x=axis, and list the same (10) DBs in the legend; but the are totally different graphs. On one, only 7 lines; on the other 9 of 10.

DB_File hit resource limits and caused data corruption.

What resource limit?

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re^2: Problems with SDBM

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Re^3: Problems with SDBM by Tux (Canon) on Mar 15, 2013 at 13:28 UTC
The graphs are part of a talk, and you miss the spoken explanation here :) The graphs come in pairs. The second is a zoom-in on the bottom part of the first. You might notice that the lines that are high on the first graph of each set do not appear on the second. The colors might have hinted you to this. The resource limits esp. in memory. At start, most memory was available. Halfway the long running process, the system also needed (lots of) memory for other processes and started swapping. They tied hashes where about 4 Gb each (4 of them). Enjoy, Have FUN! H.Merijn	[reply]

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Re^3: Problems with SDBM
by Tux (Canon) on Mar 15, 2013 at 13:28 UTC

The graphs are part of a talk, and you miss the spoken explanation here :)

The graphs come in pairs. The second is a zoom-in on the bottom part of the first. You might notice that the lines that are high on the first graph of each set do not appear on the second. The colors might have hinted you to this.

The resource limits esp. in memory. At start, most memory was available. Halfway the long running process, the system also needed (lots of) memory for other processes and started swapping. They tied hashes where about 4 Gb each (4 of them).

Enjoy, Have FUN! H.Merijn

[reply]