Hi,
[Linux 2.4.19-SMP, SB Live!, alsa-lib CVS, alsa-utils
rc3]
I have just tried to play a WAV file on my machine,
but have triggered these errors instead. The machine
didn't crash, fortunately, but it's very irritating to
have memory problems on a 1 GB machine:
$ aplay /usr/lib/sounds/jungle_exit.wav
Playing WAVE '/usr/lib/sounds/jungle_exit.wav' :
Signed 16 bit Little Endian, Rate 22050 Hz, Stereo
ALSA lib pcm_hw.c:295:(snd_pcm_hw_hw_params)
SNDRV_PCM_IOCTL_HW_PARAMS failed: Cannot allocate
memory
aplay: set_params:787: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: S16_LE
SUBFORMAT: STD
SAMPLE_BITS: 16
FRAME_BITS: 32
CHANNELS: 2
RATE: 22050
PERIOD_TIME: 100000
PERIOD_SIZE: 2205
PERIOD_BYTES: 8820
PERIODS: 5
BUFFER_TIME: 500000
BUFFER_SIZE: 11025
BUFFER_BYTES: 44100
TICK_TIME: 10000
My machine's memory looks like this:
$ free -t
total used free shared
buffers cached
Mem: 1033544 1008608 24936 0
42292 747088
-/+ buffers/cache: 219228 814316
Swap: 498004 4788 493216
Total: 1531548 1013396 518152
$ cat /proc/slabinfo
slabinfo - version: 1.1 (SMP)
kmem_cache 96 96 244 6 6 1
: 252 126
fib6_nodes 5 226 32 2 2 1
: 252 126
ip6_dst_cache 5 40 192 2 2 1
: 252 126
ndisc_cache 1 30 128 1 1 1
: 252 126
nfs_write_data 0 0 384 0 0 1
: 124 62
nfs_read_data 0 0 384 0 0 1
: 124 62
nfs_page 0 0 96 0 0 1
: 252 126
uhci_urb_priv 1 63 60 1 1 1
: 252 126
hpsb_packet 0 0 96 0 0 1
: 252 126
tcp_tw_bucket 1 30 128 1 1 1
: 252 126
tcp_bind_bucket 19 339 32 3 3 1
: 252 126
tcp_open_request 0 0 96 0 0 1
: 252 126
inet_peer_cache 2 59 64 1 1 1
: 252 126
ip_fib_hash 10 226 32 2 2 1
: 252 126
ip_dst_cache 13 168 160 7 7 1
: 252 126
arp_cache 1 30 128 1 1 1
: 252 126
blkdev_requests 512 560 96 14 14 1
: 252 126
devfsd_event 127 169 20 1 1 1
: 252 126
journal_head 14 234 48 3 3 1
: 252 126
revoke_table 1 253 12 1 1 1
: 252 126
revoke_record 0 0 32 0 0 1
: 252 126
dnotify cache 0 0 20 0 0 1
: 252 126
file lock cache 5 84 92 2 2 1
: 252 126
fasync cache 3 202 16 1 1 1
: 252 126
uid_cache 3 113 32 1 1 1
: 252 126
skbuff_head_cache 209 552 160 23 23 1
: 252 126
sock 116 176 928 44 44 1
: 124 62
sigqueue 12 58 132 1 2 1
: 252 126
cdev_cache 109 236 64 4 4 1
: 252 126
bdev_cache 9 118 64 2 2 1
: 252 126
mnt_cache 18 118 64 2 2 1
: 252 126
inode_cache 15646 22896 480 2862 2862 1
: 124 62
dentry_cache 679 4020 128 134 134 1
: 252 126
dquot 3 60 128 2 2 1
: 252 126
filp 1567 1590 128 53 53 1
: 252 126
names_cache 3 3 4096 3 3 1
: 60 30
buffer_head 202510 207760 96 5194 5194 1
: 252 126
mm_struct 240 240 160 10 10 1
: 252 126
vm_area_struct 1981 2720 96 68 68 1
: 252 126
fs_cache 302 354 64 6 6 1
: 252 126
files_cache 144 144 416 16 16 1
: 124 62
signal_act 96 96 1312 32 32 1
: 60 30
size-131072(DMA) 0 0 131072 0 0 32
: 0 0
size-131072 0 0 131072 0 0 32
: 0 0
size-65536(DMA) 0 0 65536 0 0 16
: 0 0
size-65536 1 1 65536 1 1 16
: 0 0
size-32768(DMA) 0 0 32768 0 0 8
: 0 0
size-32768 0 0 32768 0 0 8
: 0 0
size-16384(DMA) 0 0 16384 0 0 4
: 0 0
size-16384 5 6 16384 5 6 4
: 0 0
size-8192(DMA) 0 0 8192 0 0 2
: 0 0
size-8192 9 9 8192 9 9 2
: 0 0
size-4096(DMA) 0 0 4096 0 0 1
: 60 30
size-4096 69 69 4096 69 69 1
: 60 30
size-2048(DMA) 0 0 2048 0 0 1
: 60 30
size-2048 85 112 2048 56 56 1
: 60 30
size-1024(DMA) 0 0 1024 0 0 1
: 124 62
size-1024 172 204 1024 51 51 1
: 124 62
size-512(DMA) 0 0 512 0 0 1
: 124 62
size-512 199 264 512 33 33 1
: 124 62
size-256(DMA) 0 0 256 0 0 1
: 252 126
size-256 345 345 256 23 23 1
: 252 126
size-128(DMA) 2 30 128 1 1 1
: 252 126
size-128 2952 3000 128 100 100 1
: 252 126
size-64(DMA) 0 0 64 0 0 1
: 252 126
size-64 914 1357 64 23 23 1
: 252 126
size-32(DMA) 2 113 32 1 1 1
: 252 126
size-32 2466 4972 32 44 44 1
: 252 126
It was apparently the 16 bit nature of the WAV file
which was causing trouble, because I got my sound back
by playing an 8 bit one instead. It's all very odd.
Was my memory just momentarily too fragmented for ALSA
to allocate a big enough DMA buffer?
Chris
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