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From c4f941df751961aaf2456dfd4ffe7a7a8c0fda4c Mon Sep 17 00:00:00 2001
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From: David Hildenbrand <david@redhat.com>
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Date: Tue, 17 Oct 2017 19:15:48 +0200
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Subject: [PATCH 43/69] tools/kvm_stat: simplify line print logic
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RH-Author: David Hildenbrand <david@redhat.com>
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Message-id: <20171017191605.2378-23-david@redhat.com>
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Patchwork-id: 77329
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O-Subject: [RHEL-7.5 qemu-kvm-rhev PATCH 22/39] tools/kvm_stat: simplify line print logic
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Bugzilla: 1497137
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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Upstream-status: linux.git 5a7d11f8dc59ddb36e89dca42a2526ea25914def
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commit 5a7d11f8dc59ddb36e89dca42a2526ea25914def
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Author: Stefan Raspl <raspl@linux.vnet.ibm.com>
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Date: Wed Jun 7 21:08:29 2017 +0200
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tools/kvm_stat: simplify line print logic
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Simplify line print logic for header and data lines in interactive mode
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as previously suggested by Radim.
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While at it, add a space between the first two columns to avoid the
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total bleeding into the event name.
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Furthermore, for column 'Current', differentiate between no events being
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reported (empty 'Current' column) vs the case where events were reported
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but the average was rounded down to zero ('0' in 'Current column), for
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the folks who appreciate the difference.
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Finally: Only skip events which were not reported at all yet, instead of
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events that don't have a value in the current interval.
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Considered using constants for the field widths in the format strings.
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However, that would make things a bit more complicated, and considering
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that there are only two places where output happens, I figured it isn't
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worth the trouble.
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Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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scripts/kvm/kvm_stat | 26 +++++++-------------------
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1 file changed, 7 insertions(+), 19 deletions(-)
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diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
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index d2526b6..a527b2f 100755
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--- a/scripts/kvm/kvm_stat
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+++ b/scripts/kvm/kvm_stat
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@@ -887,8 +887,6 @@ class Stats(object):
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self.values[key] = (newval, newdelta)
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return self.values
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-LABEL_WIDTH = 40
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-NUMBER_WIDTH = 10
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DELAY_INITIAL = 0.25
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DELAY_REGULAR = 3.0
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MAX_GUEST_NAME_LEN = 48
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@@ -970,13 +968,8 @@ class Tui(object):
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if len(regex) > MAX_REGEX_LEN:
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regex = regex[:MAX_REGEX_LEN] + '...'
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self.screen.addstr(1, 17, 'regex filter: {0}'.format(regex))
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- self.screen.addstr(2, 1, 'Event')
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- self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH -
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- len('Total'), 'Total')
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- self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH + 7 -
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- len('%Total'), '%Total')
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- self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH + 7 + 8 -
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- len('Current'), 'Current')
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+ self.screen.addstr(2, 1, '%-40s %10s%7s %7s' %
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+ ('Event', 'Total', '%Total', 'Current'))
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self.screen.addstr(4, 1, 'Collecting data...')
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self.screen.refresh()
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@@ -1001,16 +994,11 @@ class Tui(object):
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values = stats[key]
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if not values[0] and not values[1]:
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break
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- col = 1
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- self.screen.addstr(row, col, key)
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- col += LABEL_WIDTH
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- self.screen.addstr(row, col, '%10d' % (values[0],))
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- col += NUMBER_WIDTH
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- self.screen.addstr(row, col, '%7.1f' % (values[0] * 100 / total,))
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- col += 7
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- if values[1] is not None:
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- self.screen.addstr(row, col, '%8d' %
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- round(values[1] / sleeptime))
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+ if values[0] is not None:
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+ cur = int(round(values[1] / sleeptime)) if values[1] else ''
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+ self.screen.addstr(row, 1, '%-40s %10d%7.1f %7s' %
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+ (key, values[0], values[0] * 100 / total,
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+ cur))
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row += 1
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self.screen.refresh()
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--
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1.8.3.1
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