I have 8GB physical memory and my swap is 32GB. I didn't increase the swap yet, should I?
2015-09-08 9:23 GMT-03:00 Marcus Kool <marcus.k...@urlfilterdb.com>: > > > On 09/08/2015 08:11 AM, Jorgeley Junior wrote: > >> Thank you all, this is the output: >> vm.overcommit_memory = 0 >> vm.swappiness = 60 >> I have a Redhat 6.6 >> > > The value of vm.overcommit_memory is OK. > The default value for vm.swappiness is way too high. It means that Linux > swaps out parts of processes when they are idle for a while. > For better overall system performance, you want those processes in memory > as long as possible and not swapped out so I recommend to change it to 15. > This implies that the OS has 15% of the physical memory available for file > system buffers which is plenty. > > You only mentioned that the swap is 32 GB. What is the size of the > physical memory ? > > Did you already increase the swap ? > > Marcus > > > 2015-09-05 15:08 GMT-03:00 Marcus Kool <marcus.k...@urlfilterdb.com >> <mailto:marcus.k...@urlfilterdb.com>>: >> >> On Linux, an important sysctl parameter that determines how Linux >> behaves with respect to VM allocation is vm.overcommit_memory (should be 0). >> And vm.swappiness is important to tune servers (should be 10-15). >> >> Which version of Linux do you have and what is the output of >> sysctl -a | grep -e vm.overcommit_memory -e vm.swappiness >> >> Marcus >> >> >> On 09/04/2015 07:04 PM, Jorgeley Junior wrote: >> >> Thanks Amos, i will increase the swap >> >> Em 04/09/2015 17:22, "Amos Jeffries" <squ...@treenet.co.nz >> <mailto:squ...@treenet.co.nz> <mailto:squ...@treenet.co.nz <mailto: >> squ...@treenet.co.nz>>> escreveu: >> >> On 5/09/2015 7:16 a.m., Jorgeley Junior wrote: >> > Thanks Amos, my swap is 32GB, so that's causing the error >> as you said. >> > Which is the better choice: increase the swap size or >> reduce the >> > cache_mem??? >> > >> >> Both probably. 128 GB swap I suspect you will need. >> >> Increase the swap so the system lets Squid use more virtual >> memory. >> >> Decrease the cache_mem so that Squid does not actually end >> up using the >> swap for its main worker processes. That is a real killer >> for performance. >> >> >> Amos >> >> >> >> _______________________________________________ >> squid-users mailing list >> squid-users@lists.squid-cache.org <mailto: >> squid-users@lists.squid-cache.org> >> http://lists.squid-cache.org/listinfo/squid-users >> >> >> >> >> -- >> *_ >> _* >> *_ >> _* >> > _______________________________________________ > squid-users mailing list > squid-users@lists.squid-cache.org > http://lists.squid-cache.org/listinfo/squid-users > --
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