I am trying to show PRIO qdisc stats, and always get statistics truncated as follows, could someone help to explain why and how correct it? Thanks, Jingsong # tc -s qdisc show dev eth0 qdisc prio 1: bands 8 priomap 7 6 5 4 3 2 1 0 7 7 7 7 7 7 7 7 statistics truncated _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
On Thu, 2 Jan 2003, Jingsong Fu wrote:> > I am trying to show PRIO qdisc stats, and always get statistics truncated as follows, could someone help to explain why and how correct it? > Thanks, > Jingsong > > # tc -s qdisc show dev eth0 > qdisc prio 1: bands 8 priomap 7 6 5 4 3 2 1 0 7 7 7 7 7 7 7 7 > statistics truncatedYour tc binary is not matching your kernel version, i would say. Install a new tc version, preferably from source. Patrick _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
I have tried the new tc source, however it still complains on "statistics
truncated".
By looking into the function print_qdisc() of iproute2/tc/tc_qdisc.c, shown as
follows,
if (RTA_PAYLOAD(tb[TCA_STATS]) < sizeof(struct tc_stats))
fprintf(fp, "statistics truncated");
struct tc_stats
{
__u64 bytes; /* NUmber of enqueues bytes */
__u32 packets; /* Number of enqueued packets */
__u32 drops; /* Packets dropped because of lack of resources */
__u32 overlimits; /* Number of throttle events when this
* flow goes out of allocated bandwidth */
__u32 bps; /* Current flow byte rate */
__u32 pps; /* Current flow packet rate */
__u32 qlen;
__u32 backlog;
#ifdef __KERNEL__
spinlock_t *lock;
#endif
};
RTA_PAYLOAD() is 36 bytes, which is __u32 aligned.
sizeof(struct tc_stats) is 40 bytes which is __u64 aligned.
Has anyone had the same issue, and what''s the easy way to resolve it?
Thanks,
Jingsong
-----Original Message-----
From: Patrick McHardy [mailto:kaber@stinky.trash.net]
Sent: Thursday, January 02, 2003 7:39 PM
To: Jingsong Fu
Cc: lartc@mailman.ds9a.nl
Subject: Re: [LARTC] tc qdisc show - statistics truncated
On Thu, 2 Jan 2003, Jingsong Fu wrote:
>
> I am trying to show PRIO qdisc stats, and always get statistics truncated
as follows, could someone help to explain why and how correct it?
> Thanks,
> Jingsong
>
> # tc -s qdisc show dev eth0
> qdisc prio 1: bands 8 priomap 7 6 5 4 3 2 1 0 7 7 7 7 7 7 7 7
> statistics truncated
Your tc binary is not matching your kernel version, i would say.
Install a new tc version, preferably from source.
Patrick
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Jingsong Fu wrote:>I have tried the new tc source, however it still complains on "statistics truncated". > >By looking into the function print_qdisc() of iproute2/tc/tc_qdisc.c, shown as follows, > > if (RTA_PAYLOAD(tb[TCA_STATS]) < sizeof(struct tc_stats)) > fprintf(fp, "statistics truncated"); > >struct tc_stats >{ > __u64 bytes; /* NUmber of enqueues bytes */ > __u32 packets; /* Number of enqueued packets */ > __u32 drops; /* Packets dropped because of lack of resources */ > __u32 overlimits; /* Number of throttle events when this > * flow goes out of allocated bandwidth */ > __u32 bps; /* Current flow byte rate */ > __u32 pps; /* Current flow packet rate */ > __u32 qlen; > __u32 backlog; >#ifdef __KERNEL__ > spinlock_t *lock; >#endif >}; > >RTA_PAYLOAD() is 36 bytes, which is __u32 aligned. >sizeof(struct tc_stats) is 40 bytes which is __u64 aligned. >On which platform are you trying ? on i386 i get sizeof(struct tc_stats) == 36 in userspace (without __KERNEL__ defined).> >Has anyone had the same issue, and what''s the easy way to resolve it? >The easy way is just replacing sizeof(...) by 36 and hoping that it works. Bye, Patrick> >Thanks, > >Jingsong > >-----Original Message----- >From: Patrick McHardy [mailto:kaber@stinky.trash.net] >Sent: Thursday, January 02, 2003 7:39 PM >To: Jingsong Fu >Cc: lartc@mailman.ds9a.nl >Subject: Re: [LARTC] tc qdisc show - statistics truncated > > >On Thu, 2 Jan 2003, Jingsong Fu wrote: > > > >>I am trying to show PRIO qdisc stats, and always get statistics truncated as follows, could someone help to explain why and how correct it? >>Thanks, >>Jingsong >> >># tc -s qdisc show dev eth0 >>qdisc prio 1: bands 8 priomap 7 6 5 4 3 2 1 0 7 7 7 7 7 7 7 7 >>statistics truncated >> >> > >Your tc binary is not matching your kernel version, i would say. >Install a new tc version, preferably from source. > >Patrick > >_______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/