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| author | luigi <luigi@FreeBSD.org> | 2002-08-04 21:00:49 +0000 |
|---|---|---|
| committer | luigi <luigi@FreeBSD.org> | 2002-08-04 21:00:49 +0000 |
| commit | 0bfe37b8a2dbf8d6dd3c7bf97b0c4e0b14439865 (patch) | |
| tree | f486d9ef3e35390d9ec3fde64c4214dbcb3ed594 /sys | |
| parent | 53609e4de1296ec94d24606008ae752f915481b1 (diff) | |
| download | FreeBSD-src-0bfe37b8a2dbf8d6dd3c7bf97b0c4e0b14439865.zip FreeBSD-src-0bfe37b8a2dbf8d6dd3c7bf97b0c4e0b14439865.tar.gz | |
Temporarily disable polling when no processes are active, while I
investigate the problem described below.
I am seeing some strange livelock on recent -current sources with
a slow box under heavy load, which disappears with this change.
This might suggest some kind of problem (either insufficient locking,
or mishandling of priorities) in the poll_idle thread.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/kern_poll.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/kern/kern_poll.c b/sys/kern/kern_poll.c index 9dd6924..b3a96ba 100644 --- a/sys/kern/kern_poll.c +++ b/sys/kern/kern_poll.c @@ -118,7 +118,7 @@ static u_int32_t poll_burst_max = 150; /* good for 100Mbit net and HZ=1000 */ SYSCTL_UINT(_kern_polling, OID_AUTO, burst_max, CTLFLAG_RW, &poll_burst_max, 0, "Max Polling burst size"); -static u_int32_t poll_in_idle_loop=1; /* do we poll in idle loop ? */ +static u_int32_t poll_in_idle_loop=0; /* do we poll in idle loop ? */ SYSCTL_UINT(_kern_polling, OID_AUTO, idle_poll, CTLFLAG_RW, &poll_in_idle_loop, 0, "Enable device polling in idle loop"); |
