Testing the performance of a cv module
cvm-benchclient count CVM account credential [ credential ... ]
cvm-benchclient will invoke the named CV module count times without pausing. If the module fails to validate the credentials, cvm-benchclient exits immediately with a non-zero exit code, as reported by the module.
cvm-pwfile(8), cvm-qmail(8), cvm-unix(8), cvm-sql(8), cvm-vmailmgr(8), cvm-checkpassword(8), cvm-testclient(8)
http://untroubled.org/cvm/cvm.html