-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 One feature we would like is an "rbd top" command that would be like top, but show usage of RBD volumes so that we can quickly identify high demand RBDs. Since I haven't done any programming for Ceph, I'm trying to think through the best way to approach this. I don't know if there are already perf counters that I can query that are at the client, RBD or the Rados layers. If these counters don't exist would it be best to implement them at the client layer and look for watchers on the RBD and query them? Is it better to handle it at the Rados layer and aggregate the I/O from all chunks? Of course this would need to scale out very large. It seems that if the client running rbd top requests the top 'X' number of objects from each OSD, then it would cut down on the data that the has to be moved around and processed. It wouldn't be an extremely accurate view, but might be enough. What are your thoughts? Also, what is the best way to get into the Ceph code? I've looked at several things and I find myself doing a lot of searching to find connecting pieces. My primary focus is not programming so picking up a new code base takes me a long time because I don't know many of the tricks that help people get to speed quickly. Thanks, - ---------------- Robert LeBlanc GPG Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 -----BEGIN PGP SIGNATURE----- Version: Mailvelope v0.13.1 Comment: https://www.mailvelope.com wsFcBAEBCAAQBQJVeeJoCRDmVDuy+mK58QAAYNUQAMQW1zB7FB7L1ahFdTU5 zt2K3AM+oJv/tl4TPtn1C8YXksHYAlzKK28r6boUszoINb+54c+RxZ8pbstL JwS10w0H6K/vZP0UOn03MNm3IkOYqJooiL84NT6HGBjAQLUwY6QwDWQ/5Cdl nhHuH4UDUVX8ydQYQCv7QDx4l5I8NVoUAno7dwXQ8LN6cTrNinQGYeYOXwFE nyM1u6Fj0mpaOD4OUpHfSkCl/qx6FATv9EM99alNrgBJqgLlp/wi31cSGL7c 4///valIk5Bndt6Qk002uxzB898WD50Tvqkk3rVNDtnO7SKJ6tcMfy8JUfm0 sPy+VU9sBECNxot5zmenvIPxfUIhfmfsY7hzj1wzlw8tP6bUV2T3pdsliOmD g7fQChmzHl6yUnugYShPCkCysrJa4V9xVQgCPfMUz6Tmacf82BpktZCU1ixX J+lDYoHqzeReBoRO5+O8DN5kPzwNg/JbwjDW4ZQfBBdBeZxOiUvpfCKv9Y7O 43iqFsbvj6JJye4GahdpgzjgYW1m8k/hKNlw5eS0+/9qkBw4wl+WISiXchsJ kaAf0IGWbFxskf8KxVgJR7LMin7cq+ehb+Vfxl+PL5qo8hj+j8iZWFLcHzgI SUAL4hcGjgGTaysnck4cCOk4eWaSwzbYsKEMjtpfzLIZ1PcAgIr52Id6p8gL YRnR =oPko -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
