linux-kernel - cgroup, balance RT bandwidth

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <b6a2d2e20903100449k7bb325eau26ad724e6303080b@mail.gmail.com>
Date:	Tue, 10 Mar 2009 11:49:45 +0000
From:	Rolando Martins <rolando.martins@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: cgroup, balance RT bandwidth

Just to confirm, cpuset.sched_load_balance doesn't work with RT, right?
You cannot have tasks for sub-domain 2 to utilize bandwidth of
sub-domain 3, right?

                              __1__
                             /        \
                            2         3
                      (50% rt)  (50% rt )

For my application domain it would be interesting to have
rt_runtime_ns as a min. of allocated rt and not a max.
Ex. If an application of domain 2 needs to go up to 100% and domain 3
is idle, then it would be cool to let it utilize the full bandwidth.
(we also could have a hard upper limit in each sub-domain, like
hard_up=0.8, i.e. even if we could get 100%, we will only utilize
80%); in other words, rt having the same cpu bandwidth management behavior
as the "best-effort" tasks.

Could this be done?

Rolando
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/