Changing the default IO buffer size setting will have no effect on writing to
disk. As far as I can tell the cache logic is hardwired to write in at most 4M
sized chunks.
On Thursday, January 22, 2015 9:03 PM, Steven Hunter
<[email protected]> wrote:
A second or more HDS up to 4 would work greatStevenHunterOn Jan 14, 2015 11:31
AM, "Daniel Biazus" <[email protected]> wrote:
Hey Guys,
As you can see at the following iostat output, We have a lot of writes into
the cache, :-) and the IO wait is a bit higher than expected.
Device: rrqm/s wrqm/s r/s w/s rsec/s
wsec/s avgrq-sz avgqu-sz await svctm %util(storage) sda 0.00
0.00 17.00 26.00 6094.00 13144.00 447.40 0.94 19.77 6.05
26.00(interim) sdb 0.00 0.00 85.00 13.00 12523.00
8706.00 216.62 0.18 1.86 0.84 8.20
I was wondering if would be possible to enhance the write IO performance by
increasing the IO buffers.
I thought, I would increase the proxy.config.io.max_buffer_size, from 32768 to
a much higher value.
Any thoughts about it ?
Thank you!
--
Daniel Biazusinfrastructure EngineeringAzion TechnologiesPorto Alegre, Brasil
+55 51 3012 3005 | +55 51 82279032Miami, USA +1 305 704 8816
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