Re: calculating process memory usage
* Samuel Sieb: > Since you've brought this up, this is a question I've had for a long > time. How do you get real memory+swap usage information for processes > or is that even possible? Looking in ps or top, the RES is way too > small and the VIRT/VSIZE is way too big. ps_mem is also way too small, > or at least the total is less than half of the real memory usage. Is > there something else using that much memory that isn't processes? > buffers and cache don't account for the difference either. There's a tool called smem which is supposed to attribute shared mappings in a more reasonable way. People use it with ZGC (pne of the OpenJDK garbage collectors) because it maps the heap multiple times, grossly inflating traditional RSS values. ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Re: calculating process memory usage
On 8/14/20 4:34 PM, Samuel Sieb wrote:
On 8/14/20 1:52 PM, Chris Murphy wrote:
/proc/pid/status
VmHWM or VmRSS + VmSwap
Yes, thank you!
VmHWM is not so useful for this case, but certainly for others.
Comparing with the "top" numbers, the VmRSS total looks slightly high,
depending on how zswap factors in to the numbers.
The VmSwap total is short by about 2GB (out of 12GB).
But that's the information I was looking for. Now I can do some
analysis to figure out what's hogging my (virtual) memory.
And it gave a very unexpected result. The top two offenders are:
/usr/libexec/gnome-shell-calendar-server 3167256 (3GB)
/usr/libexec/evolution-calendar-factory 2006908 (2GB)
They have almost no RSS.
For anyone curious, this is how I did it:
grep VmSwap /proc/*/status | sort -r -n -k 2 | while read name size kb;
do echo "$(readlink /proc/$(echo ${name} | cut -d/ -f 3)/exe) $size";
done | less
That's all one line.
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Re: calculating process memory usage
On 8/14/20 1:52 PM, Chris Murphy wrote: /proc/pid/status VmHWM or VmRSS + VmSwap Yes, thank you! VmHWM is not so useful for this case, but certainly for others. Comparing with the "top" numbers, the VmRSS total looks slightly high, depending on how zswap factors in to the numbers. The VmSwap total is short by about 2GB (out of 12GB). But that's the information I was looking for. Now I can do some analysis to figure out what's hogging my (virtual) memory. ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Re: calculating process memory usage
On Fri, Aug 14, 2020 at 2:29 PM Samuel Sieb wrote: > > On 8/14/20 11:41 AM, Sergio Belkin wrote: > > Perhaps this ps_mem snippet is useful: > > > Private + Shared = RAM used Program > > > > > > > > 294.8 MiB + 4.7 MiB = 299.4 MiB telegram-desktop.bin > > 290.3 MiB + 22.1 MiB = 312.4 MiB rocketchat-desktop (5) > > 323.8 MiB + 9.5 MiB = 333.2 MiB kwin_x11 (9) > > 344.5 MiB + 1.4 MiB = 345.8 MiB nextcloud > > 373.2 MiB + 21.2 MiB = 394.4 MiB spotify (5) > > 416.6 MiB + 1.3 MiB = 417.9 MiB plasma-discover > > 448.5 MiB + 16.6 MiB = 465.2 MiB MainThread > > 892.8 MiB + 444.5 KiB = 893.2 MiB packagekitd > >1.0 GiB + 8.6 MiB = 1.0 GiB plasmashell > >1.9 GiB + 81.0 MiB = 1.9 GiB Web Content (9) > > - > >9.7 GiB > > = > > Since you've brought this up, this is a question I've had for a long > time. How do you get real memory+swap usage information for processes > or is that even possible? Looking in ps or top, the RES is way too > small and the VIRT/VSIZE is way too big. ps_mem is also way too small, > or at least the total is less than half of the real memory usage. Is > there something else using that much memory that isn't processes? > buffers and cache don't account for the difference either. Maybe ... /proc/pid/status VmHWM or VmRSS + VmSwap -- Chris Murphy ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Re: calculating process memory usage
On 8/14/20 11:41 AM, Sergio Belkin wrote: Perhaps this ps_mem snippet is useful: 294.8 MiB + 4.7 MiB = 299.4 MiB telegram-desktop.bin 290.3 MiB + 22.1 MiB = 312.4 MiB rocketchat-desktop (5) 323.8 MiB + 9.5 MiB = 333.2 MiB kwin_x11 (9) 344.5 MiB + 1.4 MiB = 345.8 MiB nextcloud 373.2 MiB + 21.2 MiB = 394.4 MiB spotify (5) 416.6 MiB + 1.3 MiB = 417.9 MiB plasma-discover 448.5 MiB + 16.6 MiB = 465.2 MiB MainThread 892.8 MiB + 444.5 KiB = 893.2 MiB packagekitd 1.0 GiB + 8.6 MiB = 1.0 GiB plasmashell 1.9 GiB + 81.0 MiB = 1.9 GiB Web Content (9) - 9.7 GiB = Since you've brought this up, this is a question I've had for a long time. How do you get real memory+swap usage information for processes or is that even possible? Looking in ps or top, the RES is way too small and the VIRT/VSIZE is way too big. ps_mem is also way too small, or at least the total is less than half of the real memory usage. Is there something else using that much memory that isn't processes? buffers and cache don't account for the difference either. ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
