code: plan9front

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gefs: use a single syncer proc to flush to disk

--- a/sys/src/cmd/gefs/main.c

+++ b/sys/src/cmd/gefs/main.c

@@ -397,7 +397,11 @@

 	loadfs(dev);

 	fs->wrchan = mkchan(32);

 	fs->admchan = mkchan(32);

-	fs->nsyncers = nproc/2;

+	/*

+	 * for spinning disks, parallel sync tanks performance

+	 * for ssds, it doesn't help much.

+	 */

+	fs->nsyncers = 1;

 	fs->nreaders = nproc/2;

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

 		fs->nsyncers = fs->narena;