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Date: Wed, 4 Feb 2004 20:23:53 -0800 (PST)
From: Davide Libenzi <davidel@xmailserver.org>
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To: dada1 <dada1@cosmosbay.com>
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Subject: Re: fs/eventpoll : reduce sizeof(struct epitem)
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On Wed, 4 Feb 2004, dada1 wrote:

> Hi Davide
> 
> On a x86_64 platform, I noticed that the size of (struct epitem) is 136 
> bytes, rounded to 192 (because of  L1_CACHE alignment of 64 bytes)
> 
> If you reorder some fields of this structure, we can reduce the size to 
> 128 bytes.
> 
> The rationale is to group nwait & fd integer (32bits) fields, instead of 
> mixing them with pointers (64 bits)

Good catch. Thx I will.



- Davide