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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-05-19 02:08:01 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-05-19 02:08:01 +0100 |
| commit | 2e1b6a8dcc022cbf84fa22e5e1f47bef63a68cb1 (patch) | |
| tree | e52d8dedd255667a82d60c417d9333327cebe46a /tools/xentrace | |
| parent | f770d340f1380e924a1cdc201d3872306d263945 (diff) | |
| download | xen-2e1b6a8dcc022cbf84fa22e5e1f47bef63a68cb1.tar.gz xen-2e1b6a8dcc022cbf84fa22e5e1f47bef63a68cb1.tar.bz2 xen-2e1b6a8dcc022cbf84fa22e5e1f47bef63a68cb1.zip | |
xentrace: Trace IRQs and entry/exit timestamps.
From: Dulloor <dulloor@gmail.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'tools/xentrace')
| -rw-r--r-- | tools/xentrace/formats | 1 | ||||
| -rw-r--r-- | tools/xentrace/xentrace_format | 17 |
2 files changed, 18 insertions, 0 deletions
diff --git a/tools/xentrace/formats b/tools/xentrace/formats index 617e4745ad..5b2a7693d1 100644 --- a/tools/xentrace/formats +++ b/tools/xentrace/formats @@ -3,6 +3,7 @@ 0x0001f001 CPU%(cpu)d %(tsc)d (+%(reltsc)8d) lost_records 0x%(1)08x 0x0001f002 CPU%(cpu)d %(tsc)d (+%(reltsc)8d) wrap_buffer 0x%(1)08x 0x0001f003 CPU%(cpu)d %(tsc)d (+%(reltsc)8d) cpu_change 0x%(1)08x +0x0001f004 CPU%(cpu)d %(tsc)d (+%(reltsc)8d) trace_irq [ vector = %(1)d, count = %(2)d, tot_cycles = 0x%(3)08x, max_cycles = 0x%(4)08x ] 0x00021011 CPU%(cpu)d %(tsc)d (+%(reltsc)8d) running_to_runnable [ dom:vcpu = 0x%(1)08x ] 0x00021021 CPU%(cpu)d %(tsc)d (+%(reltsc)8d) running_to_blocked [ dom:vcpu = 0x%(1)08x ] diff --git a/tools/xentrace/xentrace_format b/tools/xentrace/xentrace_format index f0127309ab..e13b05b734 100644 --- a/tools/xentrace/xentrace_format +++ b/tools/xentrace/xentrace_format @@ -110,6 +110,10 @@ D7REC = "IIIIIII" last_tsc = [0] +TRC_TRACE_IRQ = 0x1f004 +NR_VECTORS = 256 +irq_measure = [{'count':0, 'tot_cycles':0, 'max_cycles':0}] * NR_VECTORS + i=0 while not interrupted: @@ -179,6 +183,19 @@ while not interrupted: if event == 0x1f003: cpu = d1 + if event == TRC_TRACE_IRQ: + # IN - d1:vector, d2:tsc_in, d3:tsc_out + # OUT - d1:vector, d2:count, d3:tot_cycles, d4:max_cycles + tsc_diff = d3 - d2 + if tsc_diff < 0: + break + irq_measure[d1]['count'] += 1 + irq_measure[d1]['tot_cycles'] += tsc_diff + if irq_measure[d1]['max_cycles'] < tsc_diff: + irq_measure[d1]['max_cycles'] = tsc_diff + d2 = irq_measure[d1]['count'] + d3 = irq_measure[d1]['tot_cycles'] + d4 = irq_measure[d1]['max_cycles'] #tsc = (tscH<<32) | tscL |