The pressure stall information (PSI) metrics provide useful information
on delays caused by waiting for CPU, IO and memory. Particularly on busy
servers it can provide a quick overview of what's "slowing things down".
This feature is supported on Linux >= 4.20.
The interface is documented here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/Documentation/accounting/psi.txt
These links provide rationale:
https://lwn.net/Articles/759781/https://facebookmicrosites.github.io/psi/
The following metrics are added, corresponding to the currently exposed
lines (see `head /proc/pressure/*`):
- PressureStallCPUSome
- PressureStallIOSome
- PressureStallIOFull
- PressureStallMemorySome
- PressureStallMemoryFull
The color scheme is the same as that used for Load Average, however I
gave it separate entries just in case someone wants to change them
specifically.
Tested on 4.20.7-arch1-1-ARCH, on the linux platform.
Also tested that other platforms still compile (changed configure to use
the unsupported platform).
Closes#879.
This would prevent a careless future package maintainer from creating a
release tarball with a defective configure script. :)
Also, add a warning in the autogen.sh phase if pkg.m4 is unused.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
`make htop-headers` will regenerate all '.h' headers in htop source for
all platforms.
`make clean-htop-headers` will delete all generated htop headers.
Because of the introduction of these two targets, I slightly changed
the style of platform-specific portions of makefile rules.
Please comment if you accept such a style, or need me to revert to old
style.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
This reduces generated Makefile.in size by 74%.
(217319 bytes -> 56326 bytes)
Automake considers that <prog>_CFLAGS and <prog>_LDFLAGS are
program-specific build rules, and when such are specified, Automake
will generate additional code just to avoid the "generic" and
package-wide AM_CFLAGS or AM_LDFLAGS. (Especially for <prog>_CFLAGS,
Automake will rename generated object files to become "prog-foo.o" and
such, and it's _a lot_ of code to achieve this in Makefile.)
There's no reason for htop to rename intermediate object files. It's
better to make things simpler.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
This commit adds support for Solaris, squashed from PR #741:
Summary of additions:
* Initial setup of Solaris platform directory
* Add Solaris platform into autoconf template
* Uptime and load averages
* Add dependency on libkstat
* Basic process listing
* Zone name display
* CPU detection
* Per-process memory and CPU usage parsed correctly
* Uses sysconf to discover number of CPUs, instead of more complex libkstat code
* Simple memory display working
* Reduce repetitive calls to the PAGE_SIZE macro when reading memory info
* Add Project, Contract, Task, and Pool into process properties
* Use system major()/minor() implementations and remove extraneous definition of mkdev()
* Get the STARTTIME column working properly, using the Linux implementation as a guide
* BUGFIX: Correct page size calculation for FreeBSD systems
(thanks to Andrew Paulsen)
* Allow compilation without PLPA on systems that don't support it
(thanks to Timothy Redaelli)
