shithub: gefs

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main: tweak parallelism, make it scale with cpus

we can optimize later, but at least this is using nproc,
so it feels like we optimized.

--- a/main.c

+++ b/main.c

@@ -182,8 +182,8 @@

 	 */

 	if(nproc < 2)

 		nproc = 2;

-	if(nproc > 6)

-		nproc = 6;

+	if(nproc > 8)

+		nproc = 8;

 	if(ream){

 		reamfs(dev);

 		exits(nil);

@@ -193,7 +193,7 @@

 	fs->rdchan = mkchan(32);

 	fs->wrchan = mkchan(32);

-	fs->nsyncers = 2;

+	fs->nsyncers = nproc/2;

 	if(fs->nsyncers > fs->narena)

 		fs->nsyncers = fs->narena;

 	for(i = 0; i < fs->nsyncers; i++)

@@ -205,7 +205,7 @@

 	launch(runtasks, -1, nil, "tasks");

 	launch(runcons, fs->nworker++, (void*)ctlfd, "ctl");

 	launch(runwrite, fs->nworker++, nil, "mutate");

-	for(i = 0; i < 2; i++)

+	for(i = 0; i < nproc/2; i++)

 		launch(runread, fs->nworker++, nil, "readio");

 	for(i = 0; i < fs->nsyncers; i++)

 		launch(runsync, -1, &fs->syncq[i], "syncio");