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Add some tolerance to stat calculation so it does not fail on a fresh DB

nfs-proxy-old
Vitaliy Filippov 10 months ago
parent
732e2804e9
commit
46d2bc100f
1 changed files with 18 additions and 9 deletions
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  1. 27
      mon/mon.js

27
mon/mon.js
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@ -1345,21 +1345,30 @@ class Mon
const tm = prev_stats ? BigInt(timestamp - prev_stats.timestamp) : 0;
for (const op in op_stats)
{
op_stats[op].bps = prev_stats ? (op_stats[op].bytes - prev_stats.op_stats[op].bytes) * 1000n / tm : 0;
op_stats[op].iops = prev_stats ? (op_stats[op].count - prev_stats.op_stats[op].count) * 1000n / tm : 0;
op_stats[op].lat = prev_stats ? (op_stats[op].usec - prev_stats.op_stats[op].usec)
/ ((op_stats[op].count - prev_stats.op_stats[op].count) || 1n) : 0;
if (prev_stats && prev_stats.op_stats && prev_stats.op_stats[op])
{
op_stats[op].bps = (op_stats[op].bytes - prev_stats.op_stats[op].bytes) * 1000n / tm;
op_stats[op].iops = (op_stats[op].count - prev_stats.op_stats[op].count) * 1000n / tm;
op_stats[op].lat = (op_stats[op].usec - prev_stats.op_stats[op].usec)
/ ((op_stats[op].count - prev_stats.op_stats[op].count) || 1n);
}
}
for (const op in subop_stats)
{
subop_stats[op].iops = prev_stats ? (subop_stats[op].count - prev_stats.subop_stats[op].count) * 1000n / tm : 0;
subop_stats[op].lat = prev_stats ? (subop_stats[op].usec - prev_stats.subop_stats[op].usec)
/ ((subop_stats[op].count - prev_stats.subop_stats[op].count) || 1n) : 0;
if (prev_stats && prev_stats.subop_stats && prev_stats.subop_stats[op])
{
subop_stats[op].iops = (subop_stats[op].count - prev_stats.subop_stats[op].count) * 1000n / tm;
subop_stats[op].lat = (subop_stats[op].usec - prev_stats.subop_stats[op].usec)
/ ((subop_stats[op].count - prev_stats.subop_stats[op].count) || 1n);
}
}
for (const op in recovery_stats)
{
recovery_stats[op].bps = prev_stats ? (recovery_stats[op].bytes - prev_stats.recovery_stats[op].bytes) * 1000n / tm : 0;
recovery_stats[op].iops = prev_stats ? (recovery_stats[op].count - prev_stats.recovery_stats[op].count) * 1000n / tm : 0;
if (prev_stats && prev_stats.recovery_stats && prev_stats.recovery_stats[op])
{
recovery_stats[op].bps = (recovery_stats[op].bytes - prev_stats.recovery_stats[op].bytes) * 1000n / tm;
recovery_stats[op].iops = (recovery_stats[op].count - prev_stats.recovery_stats[op].count) * 1000n / tm;
}
}
return { op_stats, subop_stats, recovery_stats };
}

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