Date: Fri, 11 Sep 2020 08:01:41 -0600 From: Ian Lepore <ian@freebsd.org> To: SHAMANTHA KRISHNA K G <shamanthkrishna23@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Determing Heap and stack size of running process. Message-ID: <b7409b8d1c63911620021d549a3bf4879d793d09.camel@freebsd.org> In-Reply-To: <CACc2HZniUSjcqL1zyWuQFOq1VP4nYXWc0Ewg3HcdAb0Td6P0%2Bg@mail.gmail.com> References: <CACc2HZn4uRERg7XatUvEe8vhyEtteP-Fscot50KvX_PEks1rEA@mail.gmail.com> <2db16d9822eab8fb536eaf705d6378487c7994ae.camel@freebsd.org> <CACc2HZniUSjcqL1zyWuQFOq1VP4nYXWc0Ewg3HcdAb0Td6P0%2Bg@mail.gmail.com>
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On Fri, 2020-09-11 at 19:26 +0530, SHAMANTHA KRISHNA K G wrote: > Thank you for the heads up, I had tried the output of procstat > -v also > ,there also I am not getting any information about heap usage . > > Thanks > -Shamantha > The output does tell you about heap usage, but you have to interpret the type and flags to figure out which mappings are heap allocations, and the RES count to figure out how many pages of those mappings are actually in use (i.e., backed by physical ram). Iirc, the mappings with type 'df' and no flags set are the heap allocations, but I'm not positive of that. Things with the D flag set are thread stacks. I remember the manpage wasn't all that helpful in figuring that stuff out last time I needed to know. -- Ian > On Fri, 11 Sep 2020, 18:59 Ian Lepore, <ian@freebsd.org> wrote: > > > On Fri, 2020-09-11 at 16:36 +0530, SHAMANTHA KRISHNA K G wrote: > > > Hello All, > > > I want to know the *size of heap and stack for a running > > > process* ,how > > > it can be done, if I* don't *see any* [stack ] *or* [heap] > > > *in the > > > output > > > of */proc/pid/map* and also the platform does not allow > > > installing > > > *third party > > > freebsd utilities like valgrind.* > > > > > > Thank you, > > > -Shamantha > > > > > > > Use procstat(1). For example "procstat -v <pid>" will show all the > > memory mappings for that process. If you need it from within a > > program > > you're writing, "man libprocstat" will get you some info on how > > procstat(1) does its work. > > > > -- Ian > > > > > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to " > freebsd-hackers-unsubscribe@freebsd.org"
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