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Firefox OS/Performance/Memory/ADB Tools: Difference between revisions
Firefox OS/Performance/Memory/ADB Tools (view source)
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The command provides: | The command provides: | ||
* | * <code>RSS</code>: The combined, unique and shared, memory currently paged into the process as Resident Set Size. | ||
* | * <code>VSIZE</code>: The virtual address space referenced by the process. This will typically be larger than the actual memory in use. | ||
<code><pre> | <code><pre> | ||
| Line 72: | Line 72: | ||
== /proc/meminfo == | == /proc/meminfo == | ||
The linux proc filesystem provides additional information about system memory resources at <code>/proc/meminfo</code>. This can be useful if you want to breakdown system memory in a different way than <code>b2g-info</code>. | |||
There is a lot of information available in <code>/proc/meminfo</code>. For a description of the various fields please see the [http://linux.die.net/man/5/proc proc(5) man page]. | |||
<code><pre> | |||
bkelly@lenir:/srv/gaia-master$ adb shell cat /proc/meminfo | |||
MemTotal: 420412 kB | |||
MemFree: 56936 kB | |||
Buffers: 16796 kB | |||
Cached: 136632 kB | |||
SwapCached: 0 kB | |||
Active: 159568 kB | |||
Inactive: 131732 kB | |||
Active(anon): 137884 kB | |||
Inactive(anon): 8492 kB | |||
Active(file): 21684 kB | |||
Inactive(file): 123240 kB | |||
Unevictable: 0 kB | |||
Mlocked: 0 kB | |||
SwapTotal: 196604 kB | |||
SwapFree: 196604 kB | |||
Dirty: 4 kB | |||
Writeback: 0 kB | |||
AnonPages: 137900 kB | |||
Mapped: 48292 kB | |||
Shmem: 8528 kB | |||
Slab: 22008 kB | |||
SReclaimable: 8664 kB | |||
SUnreclaim: 13344 kB | |||
KernelStack: 3056 kB | |||
PageTables: 2280 kB | |||
NFS_Unstable: 0 kB | |||
Bounce: 0 kB | |||
WritebackTmp: 0 kB | |||
CommitLimit: 406808 kB | |||
Committed_AS: 248120 kB | |||
VmallocTotal: 499712 kB | |||
VmallocUsed: 3396 kB | |||
VmallocChunk: 409764 kB | |||
</pre></code> | |||
== /sys/kernel/debug/ion/iommu == | |||
Starting in Android in Jelly Bean (JB) the system now uses the [https://wiki.linaro.org/BenjaminGaignard/ion ion memory allocator] for graphics shared buffers. Due to the complexity of the graphics system this can often be a source for resource exhaustion or other problems. | |||
On some devices the kernel provides debug information about ion memory use at <code>/sys/kernel/debug/ion/iommu</code>. | |||
Note, on Firefox OS this will report allocations still in use as "orphaned" when they are actually not really leaked. It seems this is related to our multi-process architecture. | |||
<code><pre> | |||
bkelly@lenir:/srv/gaia-master$ adb shell cat /sys/kernel/debug/ion/iommu | |||
client pid size | |||
---------------------------------------------------- | |||
adsprpc-smd 1 8192 | |||
---------------------------------------------------- | |||
orphaned allocations (info is from last known client): | |||
Browser 1758 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
b2g 292 4096 0 1 | |||
Browser 1758 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
b2g 292 4096 0 1 | |||
b2g 292 4096 0 1 | |||
Browser 1758 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Browser 1758 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Marketplace 1461 294912 0 1 | |||
Marketplace 1461 4096 0 1 | |||
b2g 292 1536000 0 1 | |||
b2g 292 1536000 0 1 | |||
Marketplace 1461 16384 0 1 | |||
mdss_fb0 350 1536000 0 1 | |||
b2g 292 1536000 0 1 | |||
Marketplace 1461 16384 0 1 | |||
Marketplace 1461 16384 0 1 | |||
Marketplace 1461 16384 0 1 | |||
Marketplace 1461 16384 0 1 | |||
Communications 1303 294912 0 1 | |||
Communications 1303 294912 0 1 | |||
---------------------------------------------------- | |||
total orphaned 14499840 | |||
total 14508032 | |||
---------------------------------------------------- | |||
Cached Pools: | |||
0 order 9 highmem pages in pool = 0 total | |||
0 order 9 lowmem pages in pool = 0 total | |||
0 order 8 highmem pages in pool = 0 total | |||
0 order 8 lowmem pages in pool = 0 total | |||
0 order 4 highmem pages in pool = 0 total | |||
0 order 4 lowmem pages in pool = 0 total | |||
0 order 0 highmem pages in pool = 0 total | |||
3810 order 0 lowmem pages in pool = ee2000 total | |||
Uncached Pools: | |||
0 order 9 highmem pages in pool = 0 total | |||
0 order 9 lowmem pages in pool = 0 total | |||
0 order 8 highmem pages in pool = 0 total | |||
0 order 8 lowmem pages in pool = 0 total | |||
0 order 4 highmem pages in pool = 0 total | |||
0 order 4 lowmem pages in pool = 0 total | |||
0 order 0 highmem pages in pool = 0 total | |||
0 order 0 lowmem pages in pool = 0 total | |||
Total bytes in pool: ee2000 | |||
</pre></code> | |||