How big are your /etc/passwd and /etc/group files?

[Max Polk]

On 1/31/2014 5:03 PM, Corinna Vinschen wrote:
> On Jan 31 22:40, Frank Fesevur wrote:
>> 2014-01-31 Corinna Vinschen:
>>>    Is anybody here who's using /etc/passwd and/or group files
>>>    of more than 16K in size?
>> The new way to store the stuff would make Cygwin definitely faster, 
>> but it would struggle with... uhm... 2.6 Megs file on the 32 bit 
>> version of Cygwin, Hmm. I'm wondering how to solve that elegantly. 
>> Corinna 

Every process needs to load only the current user's entry up front. 
Somewhere down the road it only *might* have to do things like translate 
from uid/gid into a string for directory listings, in some cases only a 
handful of these translations.  It's essentially a (old dbm style unix) 
database lookup.

So defer the database lookups to a libgdbm that goes against a (old dbm 
style unix) database, and don't keep that in memory, unless you want a 
small LRU algorithm in there to keep a small fixed number.  I bet the 
tiny delay later on a ls or other unix translation won't be very noticeable.

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