Hello List,
I am on 8.0 RELEASE amd64. My system has 2 RAID arrays connected to 2
separate
controllers.
My I/O throughput tests jumped by ~100MB/sec on both channels, when I
commented out the
following piece of code from kern/vfs_bio.c
void
waitrunningbufspace(void)
{
/*
mtx_lock(&rbreqlock);
while (runningbufspace > hirunningspace) {
++runningbufreq;
msleep(&runningbufreq, &rbreqlock, PVM, "wdrain", 0);
}
mtx_unlock(&rbreqlock);
*/
}
so far, I can't observe any side effects of not running it. Am I on a time
bomb?
Thank you,
Jerry
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