tuna-devel June 2016

tuna-devel@lists.fedorahosted.org

2 participants
2 discussions

[PATCH] support for SCHED_DEADLINE
by Jiri Kastner 23 Jun '16

23 Jun '16

with this patch tuna shows properly SCHED_DEADLINE: [indy@localhost ~]$ tuna -CP | grep deadline 8855 OTHER 0 0,1,2,3 202217 1402 cyclicdeadline 8856 DEADLINE 0 0,1,2,3 1 2033276 cyclicdeadline [indy@localhost ~]$ chrt -p 8856 pid 8856's current scheduling policy: SCHED_DEADLINE pid 8856's current scheduling priority: 0 pid 8856's current runtime/deadline/period parameters: 600000/1000000/1000000 Jiri Kastner (1): schedutils.c: added support for SCHED_DEADLINE python-schedutils/schedutils.c | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.9.0

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wrong CPU number from CPU bitmask if number of CPUs is over 32 and MSB of lower 32 bits is not set
by youngtack.jin＠skhms.com 22 Jun '16

22 Jun '16

Hi tuna-devel team, wrong cpu number was observed from tuna cli as below and I found bitmasklist() casued it. cpu bitmask = 80,00000000 (cpu 39 out of 40 cpus) current cpu number = 7 expected cpu number = 39 (1) current code def bitmasklist(line, nr_entries): fields = line.strip().split(",") bitmasklist = [] entry = 0 for i in range(len(fields) - 1, -1, -1): mask = int(fields[i], 16) while mask != 0: if mask & 1: bitmasklist.append(entry) mask >>= 1 entry += 1 if entry == nr_entries: break if entry == nr_entries: break return bitmasklist (2) code change proposal def bitmasklist(line, nr_entries): fields = line.strip().split(",") bitmasklist = [] # entry = 0 for i in range(len(fields) - 1, -1, -1): entry = 32 * (len(fields) - 1 - i) mask = int(fields[i], 16) while mask != 0: if mask & 1: bitmasklist.append(entry) mask >>= 1 entry += 1 if entry == nr_entries: break if entry == nr_entries: break return bitmasklist Please review on this code change proposal and deploy to the repository if ok. Thanks, YT

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tuna-devel June 2016