Ccache hangs while compiling and cache size is exaggerated

[Anonymous]

Denny Lin <dennylin93 at hs.ntnu.edu.tw> writes:

> Hi,
>
> I'm using ccache 3.1.3, and it often hangs while compiling.

What its waiting channel? Hit ^T when it hangs or run under ktrace(1).

> Every time this happens, the cache size from $ ccache -s also becomes
> ridiculously large (larger than the actual cache size).
>
> $ ccache -s
> [...]
> cache size    6.9 Gbytes

> The filesystem says it's only 2.9 GB.

How did you measure it? du(1) with `-A' option?
For example, compression can make difference

  $ df ~/.ccache
  Filesystem     Size    Used   Avail Capacity  Mounted on
  /.../.ccache    49G    666M     48G     1%    ~/.ccache

  $ du -hs ~/.ccache
  666M    ~/.ccache

  $ du -Ahs ~/.ccache
  912M    ~/.ccache

>
> I can reproduce this, but I don't know what is causing this.