Arnd Bergmann wrote:
> Seeing more hits in handle_mm_fault suggests that you have
> a higher page fault rate. A trivial reason for this might
> be that the amount of memory was misdetected in the new
> code (maybe broken device tree). What is the content of
> /proc/meminfo after a fresh boot?
Powerpc
MemTotal: 1011296 kB
MemFree: 953884 kB
Buffers: 20316 kB
Cached: 25896 kB
SwapCached: 0 kB
Active: 26228 kB
Inactive: 25652 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 132 kB
Writeback: 0 kB
AnonPages: 5684 kB
Mapped: 2436 kB
Slab: 2460 kB
SReclaimable: 732 kB
SUnreclaim: 1728 kB
PageTables: 208 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 505648 kB
Committed_AS: 11472 kB
VmallocTotal: 474756 kB
VmallocUsed: 8776 kB
VmallocChunk: 465664 kB
Ppc:
MemTotal: 1011500 kB
MemFree: 954868 kB
Buffers: 20696 kB
Cached: 25044 kB
SwapCached: 0 kB
Active: 26816 kB
Inactive: 24588 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 124 kB
Writeback: 0 kB
AnonPages: 5680 kB
Mapped: 2456 kB
Slab: 2056 kB
SReclaimable: 736 kB
SUnreclaim: 1320 kB
PageTables: 180 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 505748 kB
Committed_AS: 11468 kB
VmallocTotal: 245696 kB
VmallocUsed: 360 kB
VmallocChunk: 245276 kB
> If it's the same, try running a kernel build with 'time --verbose',
> using GNU time instead of the bash builtin time to see how the page
> fault rate changed.
Arch/powerpc
Command being timed: "make vmlinux"
User time (seconds): 4339.11
System time (seconds): 319.41
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 1:17:42
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 0
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 4213347
Voluntary context switches: 53543
Involuntary context switches: 90165
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
Arch/ppc
Command being timed: "make vmlinux"
User time (seconds): 4177.11
System time (seconds): 295.00
Percent of CPU this job got: 99%
Elapsed (wall clock) time (h:mm:ss or m:ss): 1:14:35
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 0
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 4203103
Voluntary context switches: 53812
Involuntary context switches: 85856
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
