diff options
| -rwxr-xr-x | tools/kvm/kvm_stat/kvm_stat | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat index 5c4f24879dc4..3e60d93870c0 100755 --- a/tools/kvm/kvm_stat/kvm_stat +++ b/tools/kvm/kvm_stat/kvm_stat @@ -801,6 +801,8 @@ class Stats(object): LABEL_WIDTH = 40 NUMBER_WIDTH = 10 +DELAY_INITIAL = 0.25 +DELAY_REGULAR = 3.0 class Tui(object): @@ -856,13 +858,14 @@ class Tui(object): """Propagates pid selection to stats object.""" self.stats.pid_filter = pid - def refresh(self, sleeptime): - """Refreshes on-screen data.""" + def refresh_header(self, pid=None): + """Refreshes the header.""" + if pid is None: + pid = self.stats.pid_filter self.screen.erase() - if self.stats.pid_filter > 0: + if pid > 0: self.screen.addstr(0, 0, 'kvm statistics - pid {0}' - .format(self.stats.pid_filter), - curses.A_BOLD) + .format(pid), curses.A_BOLD) else: self.screen.addstr(0, 0, 'kvm statistics - summary', curses.A_BOLD) self.screen.addstr(2, 1, 'Event') @@ -870,7 +873,13 @@ class Tui(object): len('Total'), 'Total') self.screen.addstr(2, 1 + LABEL_WIDTH + NUMBER_WIDTH + 8 - len('Current'), 'Current') + self.screen.addstr(4, 1, 'Collecting data...') + self.screen.refresh() + + def refresh_body(self, sleeptime): row = 3 + self.screen.move(row, 0) + self.screen.clrtobot() stats = self.stats.get() def sortkey(x): @@ -914,10 +923,12 @@ class Tui(object): regex = self.screen.getstr() curses.noecho() if len(regex) == 0: + self.refresh_header() return try: re.compile(regex) self.stats.fields_filter = regex + self.refresh_header() return except re.error: continue @@ -944,37 +955,38 @@ class Tui(object): try: pid = int(pid) - - if pid == 0: - self.update_pid(pid) - break - else: - if not os.path.isdir(os.path.join('/proc/', str(pid))): - continue - else: - self.update_pid(pid) - break + if pid != 0 and not os.path.isdir(os.path.join('/proc/', + str(pid))): + continue + self.refresh_header(pid) + self.update_pid(pid) + break except ValueError: continue def show_stats(self): """Refreshes the screen and processes user input.""" - sleeptime = 0.25 + sleeptime = DELAY_INITIAL + self.refresh_header() while True: - self.refresh(sleeptime) + self.refresh_body(sleeptime) curses.halfdelay(int(sleeptime * 10)) - sleeptime = 3.0 + sleeptime = DELAY_REGULAR try: char = self.screen.getkey() if char == 'x': + self.refresh_header() self.update_drilldown() + sleeptime = DELAY_INITIAL if char == 'q': break if char == 'f': self.show_filter_selection() + sleeptime = DELAY_INITIAL if char == 'p': self.show_vm_selection() + sleeptime = DELAY_INITIAL except KeyboardInterrupt: break except curses.error: |