Re: very poor ext3 write performance on big filesystems?

[Mark Lord <lkml@rtr.ca>]

Paulo Marques wrote:
> Mark Lord wrote:
>> Theodore Tso wrote:
>> ..
>>> The following ld_preload can help in some cases.  Mutt has this hack
>>> encoded in for maildir directories, which helps.
>> ..
>>
>> Oddly enough, that same spd_readdir() preload craps out here too
>> when used with "rm -r" on largish directories.
> 
>  From looking at the code, I think I've found at least one bug in opendir:
> ...
>>             dnew = realloc(dirstruct->dp,                        
>> dirstruct->max * sizeof(struct dir_s));
> ...
> 
> Shouldn't this be: "...*sizeof(struct dirent_s));"?
..

Yeah, that's one bug.
Another is that ->fd is frequently left uninitialized, yet later used.

Fixing those didn't change the null pointer deaths, though.