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Re: Current Grub2 & problem with /boot on different drive

From: Vladimir 'phcoder' Serbinenko
Subject: Re: Current Grub2 & problem with /boot on different drive
Date: Mon, 21 Sep 2009 16:22:53 +0200
User-agent: Mozilla-Thunderbird (X11/20090701)

Colin Watson wrote:
> On Sun, Sep 20, 2009 at 10:00:13PM +0200, Vladimir 'phcoder' Serbinenko wrote:
>> As a workaround for time being you can use one or more of the following:
>> 1) Increase cache size. Can this be done in 1.97?
>> Change include/grub/disk.h and replace
>> #define GRUB_DISK_CACHE_NUM     1021
>> with a bigger number
> I'm a little baffled. Why does the disk cache size make a difference
> here? He has four disks - I'd have thought that 1021 would be plenty.
1021 is the number of cached 4KiB blocks and is used in hash
calculations. If he has a lot of cache misses it will result in long
boot times

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