Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-10 Thread Marcelo Ricardo Leitner
On Fri, Aug 10, 2018 at 08:03:51PM +0300, Konstantin Khorenko wrote: > On 08/09/2018 11:43 AM, Konstantin Khorenko wrote: > > On 08/04/2018 02:36 AM, Marcelo Ricardo Leitner wrote: > > > On Fri, Aug 03, 2018 at 07:21:00PM +0300, Konstantin Khorenko wrote: > > > ... > > > > Performance results: > >

Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-10 Thread Konstantin Khorenko
On 08/09/2018 11:43 AM, Konstantin Khorenko wrote: On 08/04/2018 02:36 AM, Marcelo Ricardo Leitner wrote: On Fri, Aug 03, 2018 at 07:21:00PM +0300, Konstantin Khorenko wrote: ... Performance results: * Kernel: v4.18-rc6 - stock and with 2 patches from Oleg (earlier in thi

Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-09 Thread Konstantin Khorenko
On 08/04/2018 02:36 AM, Marcelo Ricardo Leitner wrote: On Fri, Aug 03, 2018 at 07:21:00PM +0300, Konstantin Khorenko wrote: ... Performance results: * Kernel: v4.18-rc6 - stock and with 2 patches from Oleg (earlier in this thread) * Node: CPU (8 cores): Intel(R) Xeon(R)

Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-08 Thread Marcelo Ricardo Leitner
On Mon, Aug 06, 2018 at 09:34:05AM +, David Laight wrote: > From: Michael Tuexen > > Sent: 03 August 2018 21:57 > ... > > >> Given how useless SCTP streams are, does anything actually use > > >> more than about 4? > > > > > > Maybe Michael can help us with that. I'm also curious now. > > In the

RE: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-06 Thread David Laight
From: Michael Tuexen > Sent: 03 August 2018 21:57 ... > >> Given how useless SCTP streams are, does anything actually use > >> more than about 4? > > > > Maybe Michael can help us with that. I'm also curious now. > In the context of SIGTRAN I have seen 17 streams... Ok, I've seen 17 there as well,

Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-03 Thread Marcelo Ricardo Leitner
On Fri, Aug 03, 2018 at 07:21:00PM +0300, Konstantin Khorenko wrote: ... > Performance results: > > * Kernel: v4.18-rc6 - stock and with 2 patches from Oleg (earlier in this > thread) > * Node: CPU (8 cores): Intel(R) Xeon(R) CPU E31230 @ 3.20GHz > RAM: 32 Gb >

Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-03 Thread Michael Tuexen
> On 3. Aug 2018, at 22:30, Marcelo Ricardo Leitner > wrote: > > On Fri, Aug 03, 2018 at 04:43:28PM +, David Laight wrote: >> From: Konstantin Khorenko >>> Sent: 03 August 2018 17:21 >>> >>> Each SCTP association can have up to 65535 input and output streams. >>> For each stream type an

Re: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-03 Thread Marcelo Ricardo Leitner
On Fri, Aug 03, 2018 at 04:43:28PM +, David Laight wrote: > From: Konstantin Khorenko > > Sent: 03 August 2018 17:21 > > > > Each SCTP association can have up to 65535 input and output streams. > > For each stream type an array of sctp_stream_in or sctp_stream_out > > structures is allocated u

RE: [PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-03 Thread David Laight
From: Konstantin Khorenko > Sent: 03 August 2018 17:21 > > Each SCTP association can have up to 65535 input and output streams. > For each stream type an array of sctp_stream_in or sctp_stream_out > structures is allocated using kmalloc_array() function. This function > allocates physically contig

[PATCH v2 0/2] net/sctp: Avoid allocating high order memory with kmalloc()

2018-08-03 Thread Konstantin Khorenko
Each SCTP association can have up to 65535 input and output streams. For each stream type an array of sctp_stream_in or sctp_stream_out structures is allocated using kmalloc_array() function. This function allocates physically contiguous memory regions, so this can lead to allocation of memory regi