All I can tell you at this point is that at the time it wasn't working in the version of Ubuntu being used for testing. This may have been due to older Linux kernel being used, or some other reason. I would need to investigate further before can comment.
Graham On 28 March 2010 22:56, Osi <[email protected]> wrote: > I want to use mod_wsgi 3.1 /Apache 2.2 on a Linux machine to serve > static files with the sendfile() system call. > I've successfuly installed mod_xsendfile into apache and tested it in > embedded mode. > My next step is to use it in daemon mode. > > However, I see in the mod_wsgi.c source attached that sendfile() with > mod_wsgi is not supported for daemon mode > http://code.google.com/p/modwsgi/source/browse/trunk/mod_wsgi/mod_wsgi.c?spec=svn1546&r=1546 > line 3658 > /* > * On some platforms, such as Linux, sendfile() system call > * will not work on UNIX sockets. Thus when using daemon mode > * cannot enable that feature. > */ > > if (!wsgi_daemon_pool) > apr_os_file_put(&tmpfile, &fd, APR_SENDFILE_ENABLED, self->r- >>pool); > else > apr_os_file_put(&tmpfile, &fd, 0, self->r->pool); > > I tried using it anyway in daemon mode jsut to see what happens. > I ran a simple sendfile test for large files (100MB) to a remote > machine, both in embedded and daemon mode, and the results were very > similar, indicating that the sendfile() sub-system actually worked in > daemon mode. > Obviuosly I ran tests beforehand for sending these files without using > sendfiles() that resulted in siginifacntly slower transfer rates. So I > think I can rule out the option of sendfile() not functioning at all > for some reason. > > I should also mention that when running in daemon mode I switched on > the WSGIRestrictEmbedded directive in my httpd.conf file, and also > flushed all filesystem caches before every test, just in case. > > Does anyone have any idea how to find out whether sendfile() is > actually working, > or verify that sendfile() indeed does NOT work in deamon mode, and > provide some alternative explanation for my results? > > -- > You received this message because you are subscribed to the Google Groups > "modwsgi" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/modwsgi?hl=en. > > -- You received this message because you are subscribed to the Google Groups "modwsgi" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/modwsgi?hl=en.
