tchmttest (1)

The command `tchmttest' is a utility for facility test under multi-thread situation. This command is used in the following format. `path' specifies the path of a database file. `tnum' specifies the number of running threads. `rnum' specifies the number of iterations. `bnum' specifies the number of buckets. `apow' specifies the power of the alignment. `fpow' specifies the power of the free block pool.

tchmttest write [-tl] [-td|-tb|-tt|-tx] [-rc num] [-xm num] [-df num] [-nl|-nb] [-as] [-rnd] path tnum rnum [bnum [apow [fpow]]]

Store records with keys of 8 bytes. They change as `00000001', `00000002'...

tchmttest read [-rc num] [-xm num] [-df num] [-nl|-nb] [-wb] [-rnd] path tnum

Retrieve all records of the database above.

tchmttest remove [-rc num] [-xm num] [-df num] [-nl|-nb] [-rnd] path tnum

Remove all records of the database above.

tchmttest wicked [-tl] [-td|-tb|-tt|-tx] [-nl|-nb] [-nc] path tnum rnum

Perform updating operations selected at random.

tchmttest typical [-tl] [-td|-tb|-tt|-tx] [-rc num] [-xm num] [-df num] [-nl|-nb] [-nc] [-rr num] path tnum rnum [bnum [apow [fpow]]

Perform typical operations selected at random.

tchmttest race [-tl] [-td|-tb|-tt|-tx] [-xm num] [-df num] [-nl|-nb] path tnum rnum [bnum [apow [fpow]]

Perform race condition test.

Options feature the following.

-tl : enable the option `HDBTLARGE'.

-td : enable the option `HDBTDEFLATE'.

-tb : enable the option `HDBTBZIP'.

-tt : enable the option `HDBTTCBS'.

-tx : enable the option `HDBTEXCODEC'.

-rc num : specify the number of cached records.

-xm num : specify the size of the extra mapped memory.

-df num : specify the unit step number of auto defragmentation.

-nl : enable the option `HDBNOLCK'.

-nb : enable the option `HDBLCKNB'.

-as : use the function `tchdbputasync' instead of `tchdbput'.

-rnd : select keys at random.

-wb : use the function `tchdbget3' instead of `tchdbget'.

-nc : omit the comparison test.

-rr num : specify the ratio of reading operation by percentage.

This command returns 0 on success, another on failure.

tchtest(1), tchmgr(1), tchdb(3), tokyocabinet(3)