On 9 June 2011 10:24, Emmanuel Noobadmin <centos.admin@xxxxxxxxx> wrote: > I'm trying to resolve an I/O problem on a CentOS 5.6 server. The > process basically scans through Maildirs, checking for space usage and > quota. Because there are hundred odd user folders and several 10s of > thousands of small files, this sends the I/O wait % way high. The > server hits a very high load level and stops responding to other > requests until the crawl is done. > > I am wondering if I add another disk and symlink the sub-directories > to that, would that free up the server to respond to other requests > despite the wait on that disk? > > Alternatively, if I mdraid mirror the existing disk, would md be smart > enough to read using the other disk while the first's tied up with the > first process? > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at Âhttp://vger.kernel.org/majordomo-info.html > The first thing that comes to my mind: Have you tried another IO scheduler? /M -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
