[Stgt-devel] More threads for device server

[FUJITA Tomonori]

From: FUJITA Tomonori <fujita.tomonori at lab.ntt.co.jp>
Subject: Re: [Stgt-devel] More threads for device server
Date: Mon, 05 Sep 2005 11:14:49 +0900

> > > The current code uses work queue for performing SCSI commands (or
> > > block target's tasks). Work queue is simple and good enough for
> > > debugging, however, a single thread per CPU is not good enough (from
> > > the performance perspective).
> > > 
> > > I thought about creating multiple kernel threads by hand. Are there
> > > handy APIs?
> > 
> > you can create a single threaded workqueue per target or session?
> 
> The vfs APIs work synchronously. So we need multiple threads per
> target (or session) to perform several SCSI commands simultaneously.

If we create threads per device, can we put the code to wait all the
threads to finish and destroy them in stgt_device_class_release?