On 11/05/2021 14:22, Eli Britstein wrote:
>
> On 5/11/2021 4:13 PM, Eelco Chaudron wrote:
>> External email: Use caution opening links or attachments
>>
>>
>> On 11 May 2021, at 14:53, Eli Britstein wrote:
>>
>>> On 5/11/2021 2:29 PM, Eelco Chaudron wrote:
>>>> External email: Use caution opening links or attachments
>>>>
>>>>
>>>> On 2 May 2021, at 9:13, Eli Britstein wrote:
>>>>
>>>>> New appctl 'dpdk/get-malloc-stats' implemented to get result of
>>>>> 'rte_malloc_dump_stats()' function.
>>>>>
>>>>> Could be used for debugging.
>>>> This patch looks good, however, my suggestion on the first patchset was to
>>>> include the rte_malloc_get_socket_stats() output for all sockets in the
>>>> system with this command. Or was there a specific reason to abandon this?
>>> Looking again into it, following by your comments, I saw the exact same
>>> information with the 2 commands, so I abandoned the less elaborated one.
>> The rte_malloc_get_socket_stats() shows the information per numa node, which
>> might be of interest in a multi-node system. Copied in Kevin/David, do you
>> have any experience needing this information per node? I guess it will not
>> hurt putting it in.
>
> I do run on a multi-node system.
>
> Example run with v1, those are the outputs:
>
> Socket = 0
> heap_totalsz_bytes = 1073741824
> heap_freesz_bytes = 1071313728
> greatest_free_size = 1071313728
> free_count = 1
> alloc_count = 227
> heap_allocsz_bytes = 2428096
> Socket = 1
> heap_totalsz_bytes = 1073741824
> heap_freesz_bytes = 277099968
> greatest_free_size = 276979584
> free_count = 34
> alloc_count = 90
> heap_allocsz_bytes = 796641856
>
> Heap id:0
> Heap name:socket_0
> Heap_size:1073741824,
> Free_size:1071313728,
> Alloc_size:2428096,
> Greatest_free_size:1071313728,
> Alloc_count:227,
> Free_count:1,
> Heap id:1
> Heap name:socket_1
> Heap_size:1073741824,
> Free_size:277099968,
> Alloc_size:796641856,
> Greatest_free_size:276979584,
> Alloc_count:90,
> Free_count:34,
> Heap id:2
> Heap name:
> Heap_size:0,
> ... (all sizes are 0), until "Heap id:31".
>
>
> So the latter (e.g. rte_malloc_dump_stats()) gives the same info, and
> more, than rte_malloc_get_socket_stats().
>
> This is why I abandoned the socket stats, as we get them anyway, with
> less code in OVS side.
>
yes, I confirm this too.
Heap id:0
Heap name:socket_0
Heap_size:8589934592,
Free_size:8583704896,
Alloc_size:6229696,
Greatest_free_size:8583704896,
Alloc_count:80,
Free_count:1,
Heap id:1
Heap name:socket_1
Heap_size:8589934592,
Free_size:8589934592,
Alloc_size:0,
Greatest_free_size:8589934592,
Alloc_count:0,
Free_count:1,
Heap id:2
Heap name:
Heap_size:0,
Free_size:0,
Alloc_size:0,
Greatest_free_size:0,
Alloc_count:0,
Free_count:0,
...31
LGTM,
Acked-by: Kevin Traynor <[email protected]>
>>
>>>>> Signed-off-by: Eli Britstein <[email protected]>
>>>>> Reviewed-by: Salem Sol <[email protected]>
>>>>> ---
>>>>> NEWS | 2 ++
>>>>> lib/dpdk-unixctl.man | 2 ++
>>>>> lib/dpdk.c | 30 ++++++++++++++++++++++++++++++
>>>>> 3 files changed, 34 insertions(+)
>>>>>
>>>>> diff --git a/NEWS b/NEWS
>>>>> index 95cf922aa..705baa90d 100644
>>>>> --- a/NEWS
>>>>> +++ b/NEWS
>>>>> @@ -9,6 +9,8 @@ Post-v2.15.0
>>>>> * New option '--no-record-hostname' to disable hostname
>>>>> configuration
>>>>> in ovsdb on startup.
>>>>> * New command 'record-hostname-if-not-set' to update hostname in
>>>>> ovsdb.
>>>>> + - DPDK:
>>>>> + * New debug appctl command 'dpdk/get-malloc-stats'.
>>>>>
>>>>>
>>>>> v2.15.0 - 15 Feb 2021
>>>>> diff --git a/lib/dpdk-unixctl.man b/lib/dpdk-unixctl.man
>>>>> index 2d6d576f2..a0d1fa2ea 100644
>>>>> --- a/lib/dpdk-unixctl.man
>>>>> +++ b/lib/dpdk-unixctl.man
>>>>> @@ -10,5 +10,7 @@ list of words separated by spaces: a word can be either
>>>>> a logging \fBlevel\fR
>>>>> \fBnotice\fR, \fBinfo\fR or \fBdebug\fR) or a \fBpattern\fR matching
>>>>> DPDK
>>>>> components (see \fBdpdk/log-list\fR command on \fBovs\-appctl\fR(8))
>>>>> separated
>>>>> by a colon from the logging \fBlevel\fR to apply.
>>>>> +.IP "\fBdpdk/get-malloc-stats\fR"
>>>>> +Prints the heap information statistics about DPDK malloc.
>>>>> .RE
>>>>> .
>>>>> diff --git a/lib/dpdk.c b/lib/dpdk.c
>>>>> index 319540394..a22de66eb 100644
>>>>> --- a/lib/dpdk.c
>>>>> +++ b/lib/dpdk.c
>>>>> @@ -25,6 +25,7 @@
>>>>> #include <rte_cpuflags.h>
>>>>> #include <rte_errno.h>
>>>>> #include <rte_log.h>
>>>>> +#include <rte_malloc.h>
>>>>> #include <rte_memzone.h>
>>>>> #include <rte_version.h>
>>>>>
>>>>> @@ -356,6 +357,33 @@ dpdk_unixctl_log_set(struct unixctl_conn *conn, int
>>>>> argc, const char *argv[],
>>>>> unixctl_command_reply(conn, NULL);
>>>>> }
>>>>>
>>>>> +static void
>>>>> +dpdk_unixctl_get_malloc_stats(struct unixctl_conn *conn,
>>>>> + int argc OVS_UNUSED,
>>>>> + const char *argv[] OVS_UNUSED,
>>>>> + void *aux OVS_UNUSED)
>>>>> +{
>>>>> + char *response = NULL;
>>>>> + FILE *stream;
>>>>> + size_t size;
>>>>> +
>>>>> + stream = open_memstream(&response, &size);
>>>>> + if (!stream) {
>>>>> + response = xasprintf("Unable to open memstream: %s.",
>>>>> + ovs_strerror(errno));
>>>>> + unixctl_command_reply_error(conn, response);
>>>>> + goto out;
>>>>> + }
>>>>> +
>>>>> + rte_malloc_dump_stats(stream, NULL);
>>>>> +
>>>>> + fclose(stream);
>>>>> +
>>>>> + unixctl_command_reply(conn, response);
>>>>> +out:
>>>>> + free(response);
>>>>> +}
>>>>> +
>>>>> static bool
>>>>> dpdk_init__(const struct smap *ovs_other_config)
>>>>> {
>>>>> @@ -525,6 +553,8 @@ dpdk_init__(const struct smap *ovs_other_config)
>>>>> dpdk_unixctl_mem_stream, rte_log_dump);
>>>>> unixctl_command_register("dpdk/log-set", "{level |
>>>>> pattern:level}", 0,
>>>>> INT_MAX, dpdk_unixctl_log_set, NULL);
>>>>> + unixctl_command_register("dpdk/get-malloc-stats", "", 0, 0,
>>>>> + dpdk_unixctl_get_malloc_stats, NULL);
>>>>>
>>>>> /* We are called from the main thread here */
>>>>> RTE_PER_LCORE(_lcore_id) = NON_PMD_CORE_ID;
>>>>> --
>>>>> 2.28.0.2311.g225365fb51
>
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