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big ext3 sequential write improvement in 2.5.51-mm1 gone in 2.5.53-mm1?

DISCUSSION [email protected] 2 participants 2 messages Jan 24, 2003

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#0 lore raw
Quoted 1 line

qsbench isn't really a thing which should be optimised for.

The way I run qsbench simulates an uncommon workload.

Quoted 2 lines

It is important to specify how much memory you have, and how you are invoking qsbench.

There is 3.75 GB of ram. I grab MemTotal from /proc/meminfo, and run 4 qsbench processes. Each qsbench uses 30% of MemTotal (1089 megs).

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Randy Hron
http://home.earthlink.net/~rwhron/kernel/bigbox.html
#1 lore raw
Quoted 6 lines · [email protected] wrote:
Quoted 3 lines

It is important to specify how much memory you have, and how you are invoking qsbench.

There is 3.75 GB of ram. I grab MemTotal from /proc/meminfo, and run 4 qsbench processes. Each qsbench uses 30% of MemTotal (1089 megs).

Yes, 2.5 sucks at that. Run `top', observe how in 2.4, one qsbench instance grabs all the CPU time, then exits. The remaining three can now complete with no swapout at all..