---
name: "tcbmttest"
section: "1"
platform: "linux"
package: "tokyocabinet-bin"
version: "1.4.48-15.1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/tcbmttest"
---

# tcbmttest(1)

test cases of the B+ tree database API

## NAME

tcbmttest - test cases of the B+ tree database API

## DESCRIPTION

The command \`**tcbmttest**' is a utility for facility test and performance test.  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.  \`*lmemb*' specifies the number of members in each leaf page.  \`*nmemb*' specifies the number of members in each non-leaf page.  \`*bnum*' specifies the number of buckets.  \`*apow*' specifies the power of the alignment.  \`*fpow*' specifies the power of the free block pool.

**tcbmttest write** \[**-tl**\] \[**-td**\|**-tb**\|**-tt**\|**-tx**\] \[**-xm** *num*\] \[**-df** *num*\] \[**-nl**\|**-nb**\] \[**-rnd**\] *path* *tnum* *rnum* \[*lmemb* \[*nmemb* \[*bnum* \[*apow* \[*fpow*\]\]\]\]\]

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

**tcbmttest read** \[**-xm** *num*\] \[**-df** *num*\] \[**-nl**\|**-nb**\] \[**-wb**\] \[**-rnd**\] *path* *tnum*

Retrieve all records of the database above.

**tcbmttest remove** \[**-xm** *num*\] \[**-df** *num*\] \[**-nl**\|**-nb**\] \[**-rnd**\] *path* *tnum*

Remove all records of the database above.

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

Perform updating operations selected at random.

**tcbmttest typical** \[**-tl**\] \[**-td**\|**-tb**\|**-tt**\|**-tx**\] \[**-xm** *num*\] \[**-df** *num*\] \[**-nl**\|**-nb**\] \[**-nc**\] \[**-rr** *num*\] *path* *tnum* *rnum* \[*lmemb* \[*nmemb* \[*bnum* \[*apow* \[*fpow*\]\]\]\]\]

Perform typical operations selected at random.

**tcbmttest race** \[**-tl**\] \[**-td**\|**-tb**\|**-tt**\|**-tx**\] \[**-xm** *num*\] \[**-df** *num*\] \[**-nl**\|**-nb**\] *path* *tnum* *rnum* \[*lmemb* \[*nmemb* \[*bnum* \[*apow* \[*fpow*\]\]\]\]\]

Perform race condition test.

Options feature the following.

**-tl** : enable the option \`BDBTLARGE'.\
 **-td** : enable the option \`BDBTDEFLATE'.\
 **-tb** : enable the option \`BDBTBZIP'.\
 **-tt** : enable the option \`BDBTTCBS'.\
 **-tx** : enable the option \`BDBTEXCODEC'.\
 **-xm** *num* : specify the size of the extra mapped memory.\
 **-df** *num* : specify the unit step number of auto defragmentation.\
 **-nl** : enable the option \`BDBNOLCK'.\
 **-nb** : enable the option \`BDBLCKNB'.\
 **-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.

## SEE ALSO

[**tcbtest**(1)](/tcbtest/1.md), [**tcbmgr**(1)](/tcbmgr/1.md), [**tcbdb**(3)](/tcbdb/3.md), [**tokyocabinet**(3)](/tokyocabinet/3.md)