2016-01-13 22:07 GMT+01:00 Les Mikesell <lesmikes...@gmail.com>:
> Did your strace test show a hanging system call on any of the active
> processes in this time?
Nothing is hanged. When this occurs, no transfer is happening via network
and both "rsync_bpc" processes are parsing tons of these:
FIRST PROCES:
read(5, "82f3016ca8f4b309aa141fb1aee9dfb0"..., 8184) = 4117
select(6, [5], [], NULL, {60, 0}) = 1 (in [5], left {59, 855296})
read(5, "34166a01128e65c0e98ce44442a634ea"..., 8184) = 4093
select(6, [5], [], NULL, {60, 0}) = 1 (in [5], left {59, 988318})
SECOND PROCESS:
select(4, [3], [], NULL, {60, 0}) = 1 (in [3], left {59, 999934})
read(3, "63db4c25f333ca\0\202\3Vg9\211\247\346\"N\233<\215\320x\4\272"...,
4092) = 2896
select(4, [3], [], NULL, {60, 0}) = 1 (in [3], left {59, 999675})
read(3,
"197addc7b4\0001\2V\v\v\222\2655\242\213\242\310P\222\343\331\211Q\244T\237"...,
1196) = 1196
select(7, NULL, [6], [6], {60, 0}) = 1 (out [6], left {59, 999999})
write(6, "690f3f5dc38571ac1d63db4c25f333ca"..., 4092) = 4092
select(7, NULL, [6], [6], {60, 0}) = 1 (out [6], left {59, 999998})
write(6, "\363a\306v}\376\364@\241\236{:A ", 14) = 14
select(4, [3], [], NULL, {60, 0}) = 1 (in [3], left {59, 906237})
read(3, "\374\17\0\7", 4) = 4
select(4, [3], [], NULL, {60, 0}) = 1 (in [3], left {59, 999806})
read(3, "ff5cd88ec882380bd1ade93a3c24\0M\2V"..., 4092) = 2896
What's the meaning of two rsync_bpc processes?
> That's not at all like what rsync would be doing when it merges
> changes to a compressed file.
I know, but having a slow disk would slow down also rsync and bpc.
This test told me that disks are working properly and bottleneck shold
be somewhere else.
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