ENOMEM in swap_pager
On a P3 server with 1GB of memory, every now and then (about twice a month) I get a log full of errors like this: swap_pager: I/O error - pageout failed; blkno 167,size 4096, error 12 swap_pager: I/O error - pageout failed; blkno 182,size 4096, error 12 swap_pager: I/O error - pageout failed; blkno 199,size 8192, error 12 swap_pager: I/O error - pageout failed; blkno 12456,size 20480, error 12 swap_pager: I/O error - pageout failed; blkno 222,size 8192, error 12 The server runs fine otherwise, and it doesn't seem to affect applications in any way I'm able to detect. It's running latest 5.4-RELEASE, swap is on a SCSI disk, single processor. IIRC GEOM should handle ENOMEMs by retrying the IO, but I'm asking just in case - are these errors something I should worry about? -- Every sufficiently advanced magic is indistinguishable from technology - Arthur C Anticlarke ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ENOMEM in swap_pager
Kris Kennaway wrote this message on Wed, Sep 14, 2005 at 15:25 -0400: On Wed, Sep 14, 2005 at 09:20:48PM +0200, Ivan Voras wrote: On a P3 server with 1GB of memory, every now and then (about twice a month) I get a log full of errors like this: swap_pager: I/O error - pageout failed; blkno 167,size 4096, error 12 ^^ swap_pager: I/O error - pageout failed; blkno 182,size 4096, error 12 swap_pager: I/O error - pageout failed; blkno 199,size 8192, error 12 swap_pager: I/O error - pageout failed; blkno 12456,size 20480, error 12 swap_pager: I/O error - pageout failed; blkno 222,size 8192, error 12 The server runs fine otherwise, and it doesn't seem to affect applications in any way I'm able to detect. It's running latest 5.4-RELEASE, swap is on a SCSI disk, single processor. IIRC GEOM should handle ENOMEMs by retrying the IO, but I'm asking just in case - are these errors something I should worry about? I/O errors suggest your disk is failing. Unless for some reason his disk is running out of memory: grep 12 /usr/include/errno.h #define ENOMEM 12 /* Cannot allocate memory */ -- John-Mark Gurney Voice: +1 415 225 5579 All that I will do, has been done, All that I have, has not. ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ENOMEM in swap_pager
On Sep 14, 2005, at 4:13 PM, John-Mark Gurney wrote: IIRC GEOM should handle ENOMEMs by retrying the IO, but I'm asking just in case - are these errors something I should worry about? I/O errors suggest your disk is failing. Unless for some reason his disk is running out of memory: grep 12 /usr/include/errno.h #defineENOMEM12/* Cannot allocate memory */ The error occurs when sys/vm/swap_pager:swapgeom_strategy() can't allocate a copy of an underlying I/O request buffer. The log message lies a bit; this isn't a physical disk I/O error. --lyndon ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
