[RFC] Changing the default cache size.

[Shigio YAMAGUCHI]

Hello all,
Currently, the default cache size of tag file is 500000 bytes.
To decide the value, I was assuming the machine equipped with 32-64MB
memory. However, in a recent machine, even small one has 256-512MB memory.
(Actually, even my machine has 128MB memory.)

                        default         max
        --------------------------------------
        Mac mini        512MB           1GB
        ThinkPad X40    256/512MB       1.2GB

I think that now is the time to increase the default cache size.
How about increasing the size to 5,000,000 (=5M) bytes?

The code is like follows.

        [libutil/dbop.c]

        -- Current --
        if (getenv("GTAGSCACHE") != NULL)
                info.cachesize = atoi(getenv("GTAGSCACHE"));
        if (info.cachesize < 500000)
                info.cachesize = 500000;
                        |
                        v
        -- New --
        info.cachesize = 5000000;               /* [ADD] Default cache size */
        if (getenv("GTAGSCACHE") != NULL)
                info.cachesize = atoi(getenv("GTAGSCACHE"));
        if (info.cachesize < 500000)
                info.cachesize = 500000;

The 500000 bytes is leaved as the minimum value.

What do you think?
--
Shigio YAMAGUCHI <address@hidden> - Tama Communications Corporation
PGP fingerprint: D1CB 0B89 B346 4AB6 5663  C4B6 3CA5 BBB3 57BE DDA3