RE: [LARTC] tc qdisc show - statistics truncated

["Jingsong Fu" <JingsongFu@WoodsideNet.Com>]

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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