Re: Purging the Buffer Cache

Juri Haberland
2000-12-20T10:33:44Z

Al Peat wrote:
>
> Is there any way to completely purge the buffer
> cache -- not just the write requests (ala 'sync' or
> 'update'), but the whole thing? Can I just call
> invalidate_buffers() or destroy_buffers()?
>
> I know, why in the world would a person do such a
> thing? Research. It'd be easier for me to write a
> little program or add it to a module than wait for a
> reboot each time I need a clean buffer cache.

What about the ioctl BLKFLSBUF ?
If you are running a SuSE distrib there is already a tool called flushb
that does what you want. If not, you can download the simple tool from
http://innominate.org/~juri/flushb.tar.gz

Juri

--
juri.haberland@innominate.com
system engineer innominate AG
clustering & security the linux architects
tel: +49-30-308806-45 fax: -77 http://www.innominate.com
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