From: Nguyen Thai Ngoc Duy <pclouds@gmail.com>
Date: Sat, 07 Aug 2010 00:03:40 GMT
Subject: Re: [PATCH] pack-object: trim memory usage a tiny bit
Message-ID: <AANLkTikL8MtqFr1T=3TKA7GLKSEbyvf+6SLTT2BYehto@mail.gmail.com>
In-Reply-To: <AANLkTikphara-0NXaBZ-MAygytGYDuN6ANcMWE+Ni3mW@mail.gmail.com>

2010/8/7 Sverre Rabbelier <srabbelier@gmail.com>:
> Heya,
>
> 2010/8/6 Nguyễn Thái Ngọc Duy <pclouds@gmail.com>:
>> This shrinks struct object_entry from 88 bytes to 80 bytes on my 32
>> bit machine. So that would be 12M less on linux-2.6.git (1.6M objects)
>>
>> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
>> ---
>>  Don't know if it's really worth a patch..
>
> Either way, some explanation would be nice.

struct object_entry is allocated for every object to be packed. So if
you do a clone on linux-2.6, you would need 1.6M of those structs, 88
bytes each. I cut 8 bytes from each of them.
-- 
Duy