Messages in this thread |  | | Date | Wed, 22 Nov 2000 00:14:19 +1100 | Subject | bdflush way too agressive | From | Anton Blanchard <> |
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Hi,
The current defaults for bdflush make it start async flushing when 20% of buffers are dirty and sync flush when 40% of buffers are dirty. I think these defaults are way off but apparently it is intentional. (sync flushing should be a last ditch effort when free memory is getting low and 40% on our 2G RAM test machine is not low!).
Regardless of my opinions there remains the problem that I cannot set sane values for these options since one is hardcoded as 2 times the other. We should have another bdflush sysctl variable so it can be tuned (eg in my case 90%/95%).
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