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Since we now also display the average (and in the future possibly also
the standard deviation), reduce the default number of CPUs displayed to
5, to keep terminal space usage low.
Suggested-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Calculate the average for CPU usage, IRQs/t and absolute IRQs across all
CPUs (also the ones which are not displayed) and show them below the
respective per-CPU values.
Mention this fact the man page accordingly.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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In order to be able to better track regressions or to give support,
let us track the Git id as well in version information. This makes
the ``--version'' switch actually useful.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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ncurses (de-)initialization is duplicated across flowtop and ifpps, so
move it to an own module and use it from both tools.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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We never use or report it anywhere, so remove it.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Since we've added '+'/'-' for max/min CPU values, we also need to shift
once whitespace to the left to properly align ncurses display again.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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This is not the top number of CPUs but the total number. Rename the
variable to not confuse this.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Instead of just giving the percentage of memory usage, report the total,
used, active and inactive memory values. Also report total, free and
cached for swap.
Instead of reporting the memory in the 'sys' line add two new lines for
these reports and use the free space to report the total number of
processes.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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These stats values are not reported anywhere in relative terms, so it
makes no sense to calculate the difference for them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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It's sufficient to calculate the difference of tx_bytes only once.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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In case we add new stats values, j might be higher already when entering
the loop. As j will have the proper number anyway, there is no point in
re-initializing.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Also display the least heavy hitter for the relative and absolute IRQ
list. Also check that the number passed with -n is actually 1 or larger.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Along with the topmost heavy hitters, we always display the least heavy
hitter (unless there's only 1 CPU). This is not influenced by the -n
command line parameter, so also display the according additional CPU in
the header line.
Also update the manpage accordingly.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Finally eliminate xutils.{c,h} and move the rest to epoll2.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Add an extra file for signal handling functions.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Same here as usual, break out link functions from xutils.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Move those functions out so that they can be more easily maintained
in its separate file.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Put them separately for the sake of maintanence.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Rename xio to ioops (io-ops) and boil its include files down to a
minimum.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Break this out so that we only need to have sigint non-static where
it is really needed.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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To make it more clear whether we're using the total number of CPUs or
the top number (default 10 or specified by user), rename the variable,
where the top number is used.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Instead of hard-coding the maximum number of top hitter CPUs, allow the
user to set it manually using a command line option. The default value
(if no command line parameter is specified) remains at 10.
Also update the manpage accordingly.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Avoid code duplication by allocating the stats arrays dependent on the
number of CPUs in main() rather than screen_main() and term_main().
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Introduced by commit 0e47d1d5011f ("ifpps: Don't assume a maximum of
32 CPUs"). Also update term_main with initial allocation of CPU data.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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The dynamically allocated members of struct ifstat have an entry for
each CPU. Properly consider this when resetting the stats in the
STATS_ZERO1 macro.
Reported-by: Daniel Borkmann <borkmann@iogearbox.net>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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/proc/interrupts can have such a structure ...
98: 35 0 2902361 PCI-MSI-X eth1-0
106: 61 11 3841 PCI-MSI-X eth1-1
114: 28 0 61452 PCI-MSI-X eth1-2
122: 24 1586 22 PCI-MSI-X eth1-3
130: 2912 0 337 PCI-MSI-X eth1-4
138: 21 0 28 PCI-MSI-X eth1-5
146: 21 0 56 PCI-MSI-X eth1-6
154: 34 1 1 PCI-MSI-X eth1-7
... and will not count all IRQs for eth1-*. Thus change it to
sum up multiple entries.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Just a minor change to also show the total number of cpus in the
headline.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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It's not used anywhere anymore, so remove it.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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The refresh interval can only be positive and is stored in an uint64_t,
so use strtoul() to convert it.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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When parsing irq numbers on e.g. 24 CPU machines, procfs lines can get
very long, so our static temporary buffer size will fail here with:
Assertion `!(stats->irq_nr == 0)' failed.
So allocate it relative to the CPU number.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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I've tested it on a 24 CPU machine, and it does not look so nice if
there's different padding along the lines. This patch fixes it.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Add my name to the ouput of --version and --help.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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There are people with machines containing far more than 32 CPUs. In
their case ifpps didn't work until now because of a limitation to 32
CPUs.
Rework ifpps to support an arbitrary number of CPUs. In order to still
remain within the display space, if more than 10 (TOP_CPUS) CPUs are
available, only the 10 top hitting (in terms of usr and sys time or irqs
respectively) are displayed.
Suggested-by: Daniel Borkmann <borkmann@iogearbox.net>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Memory usage can never be negative, so make these members unsigned.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Include long version string into tools when called with --version.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Add the __noreturn attribute to all functions which wont return
but call die() themselves to exit().
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Replace "on default" by "by default", make it a bit more clear what the
seed in the -E/--seed option is for and mention exit after display of
information on --version and --help.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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We do not assign or use this particular state, so just remove it from
the enum. We continue anyway in the while loop in that case.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Remove various unreachable sections from the switch statements. This
was detected by the coverty scanner.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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We decided to get rid of the old Git history and start a new one for
several reasons:
*) Allow / enforce only high-quality commits (which was not the case
for many commits in the history), have a policy that is more close
to the one from the Linux kernel. With high quality commits, we
mean code that is logically split into commits and commit messages
that are signed-off and have a proper subject and message body.
We do not allow automatic Github merges anymore, since they are
total bullshit. However, we will either cherry-pick your patches
or pull them manually.
*) The old archive was about ~27MB for no particular good reason.
This basically derived from the bad decision that also some PDF
files where stored there. From this moment onwards, no binary
objects are allowed to be stored in this repository anymore.
The old archive is not wiped away from the Internet. You will still
be able to find it, e.g. on git.cryptoism.org etc.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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