On 2010-04-13 19:56, DATACOM - Samuel Lucas wrote:
I'm considering using a shared cache over NFS, but I'm a bit concerned about creating the temporary files over NFS. Wouldn't the network become a performance bottleneck?
I haven't done any measurements of NFS-based caches myself, but it sounds probable that it will affect performance.
[...] If we allow temporary files in local machine, would it create all temporary files (.i, etc) locally and then transfer in the network only the hash, speeding up the process?
In ccache 2.4, CCACHE_TEMPDIR needs to be on the same file system as CCACHE_DIR, but in 3.0pre0 that requirement is relaxed. In fact, it just occurred to me that CCACHE_TEMPDIR isn't needed anymore since it's only used to store truly temporary files that aren't moved into the cache. Unless I find any problem, I will remove the CCACHE_TEMPDIR setting and just use mkstemp(3) to create temporary files.
Please try ccache 3.0pre0 and set CCACHE_TEMPDIR to some local directory like /tmp and see if that improves performance.
-- Joel _______________________________________________ ccache mailing list [email protected] https://lists.samba.org/mailman/listinfo/ccache
