Re: [Qemu-devel] [PATCH v2] rcu: reduce more than 7MB heap memory by malloc_trim()

On Thu, Dec 07, 2017 at 04:33:10PM +0100, Marc-André Lureau wrote: > Hi > > On Thu, Nov 23, 2017 at 7:41 AM, Yang Zhong wrote: > > Since there are some issues in memory alloc/free machenism > > in glibc for little chunk memory, if Qemu frequently > > alloc/free little chunk memory, the glibc does

Re: [Qemu-devel] [PATCH v2] rcu: reduce more than 7MB heap memory by malloc_trim()

Hi On Thu, Nov 23, 2017 at 7:41 AM, Yang Zhong wrote: > Since there are some issues in memory alloc/free machenism > in glibc for little chunk memory, if Qemu frequently > alloc/free little chunk memory, the glibc doesn't alloc > little chunk memory from free list of glibc and still > allocate fr

Re: [Qemu-devel] [PATCH v2] rcu: reduce more than 7MB heap memory by malloc_trim()

On Thu, Nov 23, 2017 at 11:19:43AM +, Stefan Hajnoczi wrote: > On Thu, Nov 23, 2017 at 02:41:16PM +0800, Yang Zhong wrote: > > Since there are some issues in memory alloc/free machenism > > in glibc for little chunk memory, if Qemu frequently > > alloc/free little chunk memory, the glibc doesn'

Re: [Qemu-devel] [PATCH v2] rcu: reduce more than 7MB heap memory by malloc_trim()

On Thu, Nov 23, 2017 at 02:41:16PM +0800, Yang Zhong wrote: > Since there are some issues in memory alloc/free machenism > in glibc for little chunk memory, if Qemu frequently > alloc/free little chunk memory, the glibc doesn't alloc > little chunk memory from free list of glibc and still > allocat

[Qemu-devel] [PATCH v2] rcu: reduce more than 7MB heap memory by malloc_trim()

Since there are some issues in memory alloc/free machenism in glibc for little chunk memory, if Qemu frequently alloc/free little chunk memory, the glibc doesn't alloc little chunk memory from free list of glibc and still allocate from OS, which make the heap size bigger and bigger. This patch int