Messages in this thread | | | Date | Thu, 6 Feb 2014 17:21:31 -0200 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [BUG] perf top: --stdio causes continuous refresh |
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Em Thu, Feb 06, 2014 at 10:48:19AM -0700, David Ahern escreveu: > On 2/6/14, 8:24 AM, Stephane Eranian wrote: > >On Thu, Feb 6, 2014 at 3:09 PM, Arnaldo Carvalho de Melo > >>>>I am using tip.git. Or try 3.11, 3.10. > >> > >>But my tests are on top of: > >> > >>[acme@ssdandy linux]$ uname -r > >>3.11.4-101.fc18.x86_64 > >> > >>I thought it was a 3.14ish one, building one to try there... > >> > >The kernel must be 3.14-rcX, the tool can be any version. > > > I don't have time to do a git bisect, but I can narrow the window to > 3.13-rc6 and 3.14-rc1. Just happened to update a server yesterday. > perf-top --stdio runs fine on the former and shows the problem on > the latter.
Humm,
/* * Either timeout expired or we got an EINTR due to * SIGWINCH, refresh screen in both cases. */ switch (poll(&stdin_poll, 1, delay_msecs)) {
And poll is returning 1:
951.068 ( 0.002 ms): poll(ufds: 0x7ff660befbb0, nfds: 1, timeout_msecs: 2000) = 1
Checking...
- Arnaldo
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