Re: D state after applying ps hang patch
On Mon, Jan 29 2001, Jens Axboe wrote: > Try this ll_rw_blk.c change instead, on top of pre11. Include > Linus' mm fixes of course. On top of ac12 I mean, pre11 already has a different (but functional) change. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: D state after applying ps hang patch
On Sun, Jan 28 2001, David Ford wrote:
> The one LInus posted plus his addendum for the ll_rw_blk.
> http://blue-labs.org/patches/ps-hang.patch
You merged it wrong, Linus suggested to remove the entire
if (!list_empty(&q->request_freelist[rw])) {
blk_refill_freelist(q, rw);
list_add(&req->table, &q->request_freelist[rw]);
return;
}
In fact, with the change you made the box can't possible survive
for very long - once the queue freelists are empty, you will
deadlock immediately.
Try this ll_rw_blk.c change instead, on top of pre11. Include
Linus' mm fixes of course.
--- /opt/kernel/linux-2.4.1-pre10/drivers/block/ll_rw_blk.c Thu Jan 25 19:15:12
2001
+++ drivers/block/ll_rw_blk.c Sun Jan 28 19:22:20 2001
@@ -633,6 +634,8 @@
if (!list_empty(&q->request_freelist[rw])) {
blk_refill_freelist(q, rw);
list_add(&req->table, &q->request_freelist[rw]);
+ if (waitqueue_active(&q->wait_for_request))
+ wake_up_nr(&q->wait_for_request, 2);
return;
}
--
Jens Axboe
-
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Re: D state after applying ps hang patch
The one LInus posted plus his addendum for the ll_rw_blk. http://blue-labs.org/patches/ps-hang.patch -d Jens Axboe wrote: > On Mon, Jan 29 2001, David Ford wrote: > > kernel 2.4.0-ac12 > > > > # ps -eo user,pid,args,wchan|egrep "imap|update|procmail" > > root 7 [kupdate]get_request_wait > > david 627 imapdget_request_wait > > david 752 procmail -f linu down > > david 761 procmail -f linu down > > david 799 procmail -f linu down > > david 854 procmail -f linu down > > david 886 procmail -f linu down > > david 847 imapdget_request_wait > > david 1079 procmail -f linu down > > david 3280 imapdinterruptible_sleep_on_locked > > david 3321 imapdinterruptible_sleep_on_locked > > > > and the cpu load is artificially inflated to 9.17 > > Which patch specifically? -- There is a natural aristocracy among men. The grounds of this are virtue and talents. Thomas Jefferson The good thing about standards is that there are so many to choose from. Andrew S. Tanenbaum - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: D state after applying ps hang patch
On Mon, Jan 29 2001, David Ford wrote: > kernel 2.4.0-ac12 > > # ps -eo user,pid,args,wchan|egrep "imap|update|procmail" > root 7 [kupdate]get_request_wait > david 627 imapdget_request_wait > david 752 procmail -f linu down > david 761 procmail -f linu down > david 799 procmail -f linu down > david 854 procmail -f linu down > david 886 procmail -f linu down > david 847 imapdget_request_wait > david 1079 procmail -f linu down > david 3280 imapdinterruptible_sleep_on_locked > david 3321 imapdinterruptible_sleep_on_locked > > and the cpu load is artificially inflated to 9.17 Which patch specifically? -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
D state after applying ps hang patch
kernel 2.4.0-ac12 # ps -eo user,pid,args,wchan|egrep "imap|update|procmail" root 7 [kupdate]get_request_wait david 627 imapdget_request_wait david 752 procmail -f linu down david 761 procmail -f linu down david 799 procmail -f linu down david 854 procmail -f linu down david 886 procmail -f linu down david 847 imapdget_request_wait david 1079 procmail -f linu down david 3280 imapdinterruptible_sleep_on_locked david 3321 imapdinterruptible_sleep_on_locked and the cpu load is artificially inflated to 9.17 -d -- There is a natural aristocracy among men. The grounds of this are virtue and talents. Thomas Jefferson The good thing about standards is that there are so many to choose from. Andrew S. Tanenbaum - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
