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Further metrics and buffer-copy optimizations in the OPFS proxy, but with little effect.

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FossilOrigin-Name: d1f1fe6f1c60640f7770dfb9245c459a09b8d24ec2ddf664dff77c810bd51f96
This commit is contained in:
stephan
2022-09-19 18:22:29 +00:00
parent f815011a08
commit aec046a264
4 changed files with 107 additions and 42 deletions
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38
ext/wasm/api/sqlite3-api-opfs.js
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@ -140,16 +140,19 @@ sqlite3.installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri)
*/
opfsUtil.metrics = {
dump: function(){
let k, n = 0, t = 0;
for(k in metrics){
let k, n = 0, t = 0, w = 0;
for(k in state.opIds){
const m = metrics[k];
n += m.count;
t += m.time;
w += m.wait;
m.avgTime = (m.count && m.time) ? (m.time / m.count) : 0;
m.avgWait = (m.count && m.wait) ? (m.wait / m.count) : 0;
}
console.log("metrics for",self.location.href,":",metrics,
"\nTotal of",n,"op(s) for",t,"ms");
console.log(self.location.href,
"metrics for",self.location.href,":",metrics,
"\nTotal of",n,"op(s) for",t,
"ms (incl. "+w+" ms of waiting on the async side)");
},
reset: function(){
let k;
@ -157,9 +160,9 @@ sqlite3.installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri)
for(k in state.opIds){
r(metrics[k] = Object.create(null));
}
[ // timed routines which are not in state.opIds
'xFileControl'
].forEach((k)=>r(metrics[k] = Object.create(null)));
//[ // timed routines which are not in state.opIds
// 'xFileControl'
//].forEach((k)=>r(metrics[k] = Object.create(null)));
}
}/*metrics*/;
@ -209,6 +212,7 @@ sqlite3.installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri)
state.opIds.xWrite = i++;
state.opIds.mkdir = i++;
state.opSAB = new SharedArrayBuffer(i * 4/*sizeof int32*/);
state.opIds.xFileControl = state.opIds.xSync /* special case */;
opfsUtil.metrics.reset();
}
@ -413,18 +417,20 @@ sqlite3.installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri)
},
xFileControl: function(pFile, opId, pArg){
mTimeStart('xFileControl');
if(capi.SQLITE_FCNTL_SYNC===opId){
return opRun('xSync', {fid:pFile, flags:0});
}
const rc = (capi.SQLITE_FCNTL_SYNC===opId)
? opRun('xSync', {fid:pFile, flags:0})
: capi.SQLITE_NOTFOUND;
mTimeEnd();
return capi.SQLITE_NOTFOUND;
return rc;
},
xFileSize: function(pFile,pSz64){
mTimeStart('xFileSize');
const rc = opRun('xFileSize', pFile);
if(!isWorkerErrCode(rc)){
const f = __openFiles[pFile];
wasm.setMemValue(pSz64, f.sabViewFileSize.getBigInt64(0,true) ,'i64');
wasm.setMemValue(
pSz64, __openFiles[pFile].sabViewFileSize.getBigInt64(0,true),
'i64'
);
}
mTimeEnd();
return rc;
@ -454,6 +460,7 @@ sqlite3.installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri)
return rc;
},
xSync: function(pFile,flags){
++metrics.xSync.count;
return 0; // impl'd in xFileControl(). opRun('xSync', {fid:pFile, flags});
},
xTruncate: function(pFile,sz64){
@ -492,8 +499,9 @@ sqlite3.installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri)
const vfsSyncWrappers = {
xAccess: function(pVfs,zName,flags,pOut){
mTimeStart('xAccess');
const rc = opRun('xAccess', wasm.cstringToJs(zName));
wasm.setMemValue(pOut, rc ? 0 : 1, 'i32');
wasm.setMemValue(
pOut, (opRun('xAccess', wasm.cstringToJs(zName)) ? 0 : 1), 'i32'
);
mTimeEnd();
return 0;
},