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Merge bitcoin/bitcoin#23907: tracing: utxocache tracepoints follow up for #22902

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799968e8b3 tracing: misc follow-ups to 22902 (0xb10c)
36a6584703 tracing: correctly scope utxocache:flush tracepoint (Arnab Sen)

Pull request description:

  This PR is a follow-up to the [#22902](https://github.com/bitcoin/bitcoin/pull/22902).

  Previously, the tracepoint `utxocache:flush` was called, even when it was not flushing. So, the tracepoint is now scoped to write only when coins cache to disk.

ACKs for top commit:
  0xB10C:
    ACK 799968e8b3

Tree-SHA512: ebb096cbf991c551c81e4339821f10d9768c14cf3d8cb14d0ad851acff5980962228a1c746914c6aba3bdb27e8be53b33349c41efe8bab5542f639916e437b5f
This commit is contained in:
fanquake
2022-02-20 11:25:56 +00:00
parent 98b9d607a8 799968e8b3
commit 2b0735d183
5 changed files with 50 additions and 50 deletions
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21
contrib/tracing/log_utxocache_flush.py
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@@ -16,14 +16,14 @@ from bcc import BPF, USDT
# a sandboxed Linux kernel VM.
program = """
# include <uapi/linux/ptrace.h>
struct data_t
{
u64 duration;
u32 mode;
u64 coins_count;
u64 coins_mem_usage;
bool is_flush_prune;
bool is_full_flush;
bool is_flush_for_prune;
};
// BPF perf buffer to push the data to user space.
@@ -35,8 +35,7 @@ int trace_flush(struct pt_regs *ctx) {
bpf_usdt_readarg(2, ctx, &data.mode);
bpf_usdt_readarg(3, ctx, &data.coins_count);
bpf_usdt_readarg(4, ctx, &data.coins_mem_usage);
bpf_usdt_readarg(5, ctx, &data.is_flush_prune);
bpf_usdt_readarg(5, ctx, &data.is_full_flush);
bpf_usdt_readarg(5, ctx, &data.is_flush_for_prune);
flush.perf_submit(ctx, &data, sizeof(data));
return 0;
}
@@ -57,19 +56,17 @@ class Data(ctypes.Structure):
("mode", ctypes.c_uint32),
("coins_count", ctypes.c_uint64),
("coins_mem_usage", ctypes.c_uint64),
("is_flush_prune", ctypes.c_bool),
("is_full_flush", ctypes.c_bool)
("is_flush_for_prune", ctypes.c_bool)
]
def print_event(event):
print("%-15d %-10s %-15d %-15s %-8s %-8s" % (
print("%-15d %-10s %-15d %-15s %-8s" % (
event.duration,
FLUSH_MODES[event.mode],
event.coins_count,
"%.2f kB" % (event.coins_mem_usage/1000),
event.is_flush_prune,
event.is_full_flush
event.is_flush_for_prune
))
@@ -90,9 +87,9 @@ def main(bitcoind_path):
b["flush"].open_perf_buffer(handle_flush)
print("Logging utxocache flushes. Ctrl-C to end...")
print("%-15s %-10s %-15s %-15s %-8s %-8s" % ("Duration (µs)", "Mode",
"Coins Count", "Memory Usage",
"Prune", "Full Flush"))
print("%-15s %-10s %-15s %-15s %-8s" % ("Duration (µs)", "Mode",
"Coins Count", "Memory Usage",
"Flush for Prune"))
while True:
try: