Date: Tue, 28 Oct 2014 10:38:23 -0700 From: Brendan Gregg <brendan.d.gregg@gmail.com> To: Stefan Parvu <sparvu@systemdatarecorder.org> Cc: freebsd-performance@freebsd.org Subject: Re: pmcstat -z32 -G truncates callgraph to 8 Message-ID: <CAE40pdf6jUGEse0Mh%2BgV48VnwLrWS%2BfhO59gfzY=ocRauK43MA@mail.gmail.com> In-Reply-To: <20141028114537.83f9f0a3c730949f453c3819@systemdatarecorder.org> References: <CAE40pdf5AzR4tuGZUQugoK6jfbvd_dLLBtdfv2FPQYY3Lb5PrA@mail.gmail.com> <20141028114537.83f9f0a3c730949f453c3819@systemdatarecorder.org>
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G'Day Stefan, On Tue, Oct 28, 2014 at 2:45 AM, Stefan Parvu <sparvu@systemdatarecorder.org> wrote: > >> I'm using pmcstat to capture call graphs, however, these always seem >> truncated to 8 stack frames. Anyone else hit this? Anyone know a fix >> or workaround? > > On FreeBSD 11.0-CURRENT Im seeing these: > > kern.features.hwpmc_hooks: 1 > kern.hwpmc.softevents: 16 > kern.hwpmc.callchaindepth: 16 > kern.hwpmc.hashsize: 1024 > kern.hwpmc.nsamples: 1024 > kern.hwpmc.mtxpoolsize: 2048 > kern.hwpmc.logbuffersize: 4 > kern.hwpmc.nbuffers: 1024 Ah, thanks, I'm on 10.0-STABLE and I have: kern.hwpmc.callchaindepth: 8 Glad it's something simple! Brendan
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